feat: restrict AI tagging to parser-discovered test methods

src/main/java/org/egothor/methodatlas/MethodAtlasApp.java

@@ -20,19 +20,20 @@ import org.egothor.methodatlas.ai.AiProvider;
 import org.egothor.methodatlas.ai.AiSuggestionEngine;
 import org.egothor.methodatlas.ai.AiSuggestionEngineImpl;
 import org.egothor.methodatlas.ai.AiSuggestionException;
+import org.egothor.methodatlas.ai.PromptBuilder;
 import org.egothor.methodatlas.ai.SuggestionLookup;
 
 import com.github.javaparser.ParserConfiguration;
 import com.github.javaparser.ParserConfiguration.LanguageLevel;
 import com.github.javaparser.StaticJavaParser;
 import com.github.javaparser.ast.CompilationUnit;
-import com.github.javaparser.ast.PackageDeclaration;
 import com.github.javaparser.ast.body.ClassOrInterfaceDeclaration;
 import com.github.javaparser.ast.body.MethodDeclaration;
 import com.github.javaparser.ast.expr.AnnotationExpr;
 import com.github.javaparser.ast.expr.ArrayInitializerExpr;
 import com.github.javaparser.ast.expr.Expression;
 import com.github.javaparser.ast.expr.MemberValuePair;
+import com.github.javaparser.ast.nodeTypes.NodeWithName;
 
 /**
  * Command-line application for scanning Java test sources, extracting JUnit
@@ -298,33 +299,63 @@ public class MethodAtlasApp { // NOPMD
     private static void processFile(Path path, OutputMode mode, AiOptions aiOptions, AiSuggestionEngine aiEngine) {
         try {
             CompilationUnit compilationUnit = StaticJavaParser.parse(path);
-            String packageName = compilationUnit.getPackageDeclaration().map(PackageDeclaration::getNameAsString)
+            String packageName = compilationUnit.getPackageDeclaration().map(NodeWithName::getNameAsString).orElse("");
-                    .orElse("");
 
             compilationUnit.findAll(ClassOrInterfaceDeclaration.class).forEach(clazz -> {
                 String className = clazz.getNameAsString();
                 String fqcn = packageName.isEmpty() ? className : packageName + "." + className;
-                SuggestionLookup suggestionLookup = resolveSuggestionLookup(clazz, fqcn, aiOptions, aiEngine);
 
-                clazz.findAll(MethodDeclaration.class).forEach(method -> {
+                List<MethodDeclaration> testMethods = findJUnitTestMethods(clazz);
-                    if (!isJUnitTest(method)) {
+                SuggestionLookup suggestionLookup = resolveSuggestionLookup(clazz, fqcn, testMethods, aiOptions,
-                        return;
+                        aiEngine);
-                    }
 
+                for (MethodDeclaration method : testMethods) {
                     int loc = countLOC(method);
                     List<String> tags = getTagValues(method);
                     AiMethodSuggestion suggestion = suggestionLookup.find(method.getNameAsString()).orElse(null);
 
                     emit(mode, aiOptions.enabled(), fqcn, method.getNameAsString(), loc, tags, suggestion);
-                });
+                }
             });
         } catch (Exception e) {
             if (LOG.isLoggable(Level.WARNING)) {
-                LOG.log(Level.WARNING, "Failed to parse: {0} due to {1}", new Object[] { path, e.getMessage() });
+                LOG.log(Level.WARNING, "Failed to parse: " + path, e);
             }
         }
     }
 
+    /**
+     * Returns all JUnit test methods declared within the specified class.
+     *
+     * <p>
+     * The method traverses the supplied {@link ClassOrInterfaceDeclaration} and
+     * collects all {@link MethodDeclaration} instances that satisfy the
+     * {@link #isJUnitTest(MethodDeclaration)} predicate.
+     * </p>
+     *
+     * <p>
+     * The detection logic currently recognizes methods annotated with supported
+     * JUnit Jupiter test annotations such as {@code @Test},
+     * {@code @ParameterizedTest}, and {@code @RepeatedTest}. Only methods matching
+     * these criteria are included in the returned list.
+     * </p>
+     *
+     * <p>
+     * The returned list preserves the discovery order produced by
+     * {@link com.github.javaparser.ast.Node#findAll(Class)}, which corresponds to
+     * the order of method declarations in the source file.
+     * </p>
+     *
+     * @param clazz parsed class declaration whose methods should be inspected
+     * @return list of JUnit test method declarations contained in the class;
+     *         possibly empty but never {@code null}
+     *
+     * @see #isJUnitTest(MethodDeclaration)
+     */
+    private static List<MethodDeclaration> findJUnitTestMethods(ClassOrInterfaceDeclaration clazz) {
+        return clazz.findAll(MethodDeclaration.class).stream().filter(MethodAtlasApp::isJUnitTest).toList();
+    }
+
     /**
      * Resolves method-level AI suggestions for a parsed class.
      *
@@ -342,8 +373,8 @@ public class MethodAtlasApp { // NOPMD
      * @return lookup of AI suggestions keyed by method name; never {@code null}
      */
     private static SuggestionLookup resolveSuggestionLookup(ClassOrInterfaceDeclaration clazz, String fqcn,
-            AiOptions aiOptions, AiSuggestionEngine aiEngine) {
+            List<MethodDeclaration> testMethods, AiOptions aiOptions, AiSuggestionEngine aiEngine) {
-        if (!aiOptions.enabled() || aiEngine == null) {
+        if (!aiOptions.enabled() || aiEngine == null || testMethods.isEmpty()) {
             return SuggestionLookup.from(null);
         }
 
@@ -356,18 +387,55 @@ public class MethodAtlasApp { // NOPMD
             return SuggestionLookup.from(null);
         }
 
+        List<PromptBuilder.TargetMethod> targetMethods = toTargetMethods(testMethods);
+
         try {
-            AiClassSuggestion aiClassSuggestion = aiEngine.suggestForClass(fqcn, classSource);
+            AiClassSuggestion aiClassSuggestion = aiEngine.suggestForClass(fqcn, classSource, targetMethods);
             return SuggestionLookup.from(aiClassSuggestion);
         } catch (AiSuggestionException e) {
             if (LOG.isLoggable(Level.WARNING)) {
-                LOG.log(Level.WARNING, "AI suggestion failed for class {0}: {1}",
+                LOG.log(Level.WARNING, "AI suggestion failed for class " + fqcn, e);
-                        new Object[] { fqcn, e.getMessage() });
             }
             return SuggestionLookup.from(null);
         }
     }
 
+    /**
+     * Converts parsed JUnit test method declarations into prompt target
+     * descriptors.
+     *
+     * <p>
+     * The returned {@link PromptBuilder.TargetMethod} objects provide a compact
+     * representation of the methods that should be analyzed by the AI
+     * classification prompt. Each descriptor contains the method name together with
+     * the optional begin and end line numbers derived from the parser source range.
+     * </p>
+     *
+     * <p>
+     * Line numbers are obtained from {@link MethodDeclaration#getRange()} when
+     * source position information is available. If the parser did not retain range
+     * metadata for a method, the corresponding line value is set to {@code null}.
+     * </p>
+     *
+     * <p>
+     * The resulting list preserves the order of the supplied method declarations.
+     * </p>
+     *
+     * @param testMethods list of parsed JUnit test method declarations
+     * @return list of prompt target descriptors representing the supplied methods;
+     *         possibly empty but never {@code null}
+     *
+     * @see PromptBuilder.TargetMethod
+     * @see MethodDeclaration#getRange()
+     */
+    private static List<PromptBuilder.TargetMethod> toTargetMethods(List<MethodDeclaration> testMethods) {
+        return testMethods.stream()
+                .map(method -> new PromptBuilder.TargetMethod(method.getNameAsString(),
+                        method.getRange().map(range -> range.begin.line).orElse(null),
+                        method.getRange().map(range -> range.end.line).orElse(null)))
+                .toList();
+    }
+
     /**
      * Creates the AI suggestion engine for the current run.
      *

src/main/java/org/egothor/methodatlas/ai/AiProviderClient.java

@@ -1,5 +1,7 @@
 package org.egothor.methodatlas.ai;
 
+import java.util.List;
+
 /**
  * Provider-specific client abstraction used to communicate with external AI
  * inference services.
@@ -76,10 +78,12 @@ public interface AiProviderClient {
      * objects describing individual test methods.
      * </p>
      *
-     * @param fqcn         fully qualified name of the analyzed class
+     * @param fqcn          fully qualified name of the analyzed class
-     * @param classSource  complete source code of the class being analyzed
+     * @param classSource   complete source code of the class being analyzed
-     * @param taxonomyText security taxonomy definition guiding the AI
+     * @param taxonomyText  security taxonomy definition guiding the AI
-     *                     classification
+     *                      classification
+     * @param targetMethods deterministically extracted JUnit test methods that must
+     *                      be classified
      * @return normalized AI classification result
      *
      * @throws AiSuggestionException if the request fails due to provider errors,
@@ -88,6 +92,6 @@ public interface AiProviderClient {
      * @see AiClassSuggestion
      * @see AiMethodSuggestion
      */
-    AiClassSuggestion suggestForClass(String fqcn, String classSource, String taxonomyText)
+    AiClassSuggestion suggestForClass(String fqcn, String classSource, String taxonomyText,
-            throws AiSuggestionException;
+            List<PromptBuilder.TargetMethod> targetMethods) throws AiSuggestionException;
 }

src/main/java/org/egothor/methodatlas/ai/AiSuggestionEngine.java

@@ -1,5 +1,7 @@
 package org.egothor.methodatlas.ai;
 
+import java.util.List;
+
 /**
  * High-level AI orchestration contract for security classification of parsed
  * test classes.
@@ -52,8 +54,10 @@ public interface AiSuggestionEngine {
      * using full class context.
      * </p>
      *
-     * @param fqcn        fully qualified class name of the parsed test class
+     * @param fqcn          fully qualified class name of the parsed test class
-     * @param classSource complete source code of the class to analyze
+     * @param classSource   complete source code of the class to analyze
+     * @param targetMethods deterministically extracted JUnit test methods that must
+     *                      be classified
      * @return normalized AI classification result for the class and its methods
      *
      * @throws AiSuggestionException if analysis fails due to provider communication
@@ -63,5 +67,6 @@ public interface AiSuggestionEngine {
      * @see AiClassSuggestion
      * @see AiMethodSuggestion
      */
-    AiClassSuggestion suggestForClass(String fqcn, String classSource) throws AiSuggestionException;
+    AiClassSuggestion suggestForClass(String fqcn, String classSource, List<PromptBuilder.TargetMethod> targetMethods)
+            throws AiSuggestionException;
 }

src/main/java/org/egothor/methodatlas/ai/AiSuggestionEngineImpl.java

@@ -2,6 +2,7 @@ package org.egothor.methodatlas.ai;
 
 import java.io.IOException;
 import java.nio.file.Files;
+import java.util.List;
 
 /**
  * Default implementation of {@link AiSuggestionEngine} that coordinates
@@ -73,8 +74,10 @@ public final class AiSuggestionEngineImpl implements AiSuggestionEngine {
      * taxonomy text loaded at engine initialization time.
      * </p>
      *
-     * @param fqcn        fully qualified class name of the analyzed test class
+     * @param fqcn          fully qualified class name of the analyzed test class
-     * @param classSource complete source code of the class to analyze
+     * @param classSource   complete source code of the class to analyze
+     * @param targetMethods deterministically extracted JUnit test methods that must
+     *                      be classified
      * @return normalized AI classification result for the class and its methods
      *
      * @throws AiSuggestionException if the provider fails to analyze the class or
@@ -84,8 +87,9 @@ public final class AiSuggestionEngineImpl implements AiSuggestionEngine {
      * @see AiProviderClient#suggestForClass(String, String, String)
      */
     @Override
-    public AiClassSuggestion suggestForClass(String fqcn, String classSource) throws AiSuggestionException {
+    public AiClassSuggestion suggestForClass(String fqcn, String classSource,
-        return client.suggestForClass(fqcn, classSource, taxonomyText);
+            List<PromptBuilder.TargetMethod> targetMethods) throws AiSuggestionException {
+        return client.suggestForClass(fqcn, classSource, taxonomyText, targetMethods);
     }
 
     /**

src/main/java/org/egothor/methodatlas/ai/AnthropicClient.java

@@ -118,9 +118,11 @@ public final class AnthropicClient implements AiProviderClient {
      * model, which is then deserialized into an {@link AiClassSuggestion}.
      * </p>
      *
-     * @param fqcn         fully qualified class name being analyzed
+     * @param fqcn          fully qualified class name being analyzed
-     * @param classSource  complete source code of the class
+     * @param classSource   complete source code of the class
-     * @param taxonomyText taxonomy definition guiding classification
+     * @param taxonomyText  taxonomy definition guiding classification
+     * @param targetMethods deterministically extracted JUnit test methods that must
+     *                      be classified
      *
      * @return normalized AI classification result
      *
@@ -129,10 +131,10 @@ public final class AnthropicClient implements AiProviderClient {
      *                               invalid content
      */
     @Override
-    public AiClassSuggestion suggestForClass(String fqcn, String classSource, String taxonomyText)
+    public AiClassSuggestion suggestForClass(String fqcn, String classSource, String taxonomyText,
-            throws AiSuggestionException {
+            List<PromptBuilder.TargetMethod> targetMethods) throws AiSuggestionException {
         try {
-            String prompt = PromptBuilder.build(fqcn, classSource, taxonomyText);
+            String prompt = PromptBuilder.build(fqcn, classSource, taxonomyText, targetMethods);
 
             MessageRequest payload = new MessageRequest(options.modelName(), SYSTEM_PROMPT,
                     List.of(new ContentMessage("user", List.of(new ContentBlock("text", prompt)))), 0.0, 2_000);

src/main/java/org/egothor/methodatlas/ai/OllamaClient.java

@@ -128,9 +128,11 @@ public final class OllamaClient implements AiProviderClient {
      * {@link AiClassSuggestion}, and then normalized before being returned.
      * </p>
      *
-     * @param fqcn         fully qualified class name being analyzed
+     * @param fqcn          fully qualified class name being analyzed
-     * @param classSource  complete source code of the class being analyzed
+     * @param classSource   complete source code of the class being analyzed
-     * @param taxonomyText taxonomy definition guiding classification
+     * @param taxonomyText  taxonomy definition guiding classification
+     * @param targetMethods deterministically extracted JUnit test methods that must
+     *                      be classified
      * @return normalized AI classification result
      *
      * @throws AiSuggestionException if the request fails, if the provider returns
@@ -138,10 +140,10 @@ public final class OllamaClient implements AiProviderClient {
      *                               fails
      */
     @Override
-    public AiClassSuggestion suggestForClass(String fqcn, String classSource, String taxonomyText)
+    public AiClassSuggestion suggestForClass(String fqcn, String classSource, String taxonomyText,
-            throws AiSuggestionException {
+            List<PromptBuilder.TargetMethod> targetMethods) throws AiSuggestionException {
         try {
-            String prompt = PromptBuilder.build(fqcn, classSource, taxonomyText);
+            String prompt = PromptBuilder.build(fqcn, classSource, taxonomyText, targetMethods);
 
             ChatRequest payload = new ChatRequest(options.modelName(),
                     List.of(new Message("system", SYSTEM_PROMPT), new Message("user", prompt)), false,

src/main/java/org/egothor/methodatlas/ai/OpenAiCompatibleClient.java

@@ -128,10 +128,11 @@ public final class OpenAiCompatibleClient implements AiProviderClient {
      * {@link AiClassSuggestion}.
      * </p>
      *
-     * @param fqcn         fully qualified class name being analyzed
+     * @param fqcn          fully qualified class name being analyzed
-     * @param classSource  complete source code of the class
+     * @param classSource   complete source code of the class
-     * @param taxonomyText taxonomy definition guiding classification
+     * @param taxonomyText  taxonomy definition guiding classification
-     *
+     * @param targetMethods deterministically extracted JUnit test methods that must
+     *                      be classified
      * @return normalized classification result
      *
      * @throws AiSuggestionException if the provider request fails, the model
@@ -139,10 +140,10 @@ public final class OpenAiCompatibleClient implements AiProviderClient {
      *                               fails
      */
     @Override
-    public AiClassSuggestion suggestForClass(String fqcn, String classSource, String taxonomyText)
+    public AiClassSuggestion suggestForClass(String fqcn, String classSource, String taxonomyText,
-            throws AiSuggestionException {
+            List<PromptBuilder.TargetMethod> targetMethods) throws AiSuggestionException {
         try {
-            String prompt = PromptBuilder.build(fqcn, classSource, taxonomyText);
+            String prompt = PromptBuilder.build(fqcn, classSource, taxonomyText, targetMethods);
 
             ChatRequest payload = new ChatRequest(options.modelName(),
                     List.of(new Message("system", SYSTEM_PROMPT), new Message("user", prompt)), 0.0);

src/main/java/org/egothor/methodatlas/ai/PromptBuilder.java

@@ -1,5 +1,9 @@
 package org.egothor.methodatlas.ai;
 
+import java.util.List;
+import java.util.Objects;
+import java.util.stream.Collectors;
+
 /**
  * Utility responsible for constructing the prompt supplied to AI providers for
  * security classification of JUnit test classes.
@@ -18,6 +22,13 @@ package org.egothor.methodatlas.ai;
  * </ul>
  *
  * <p>
+ * This revision keeps the full class source as semantic context but removes
+ * method discovery from the AI model. The caller supplies the exact list of
+ * JUnit test methods that must be classified, optionally with source line
+ * anchors.
+ * </p>
+ * 
+ * <p>
  * The resulting prompt is passed to the configured AI provider and instructs
  * the model to produce a deterministic JSON classification result describing
  * security relevance and taxonomy tags for individual test methods.
@@ -38,6 +49,23 @@ package org.egothor.methodatlas.ai;
  * @see OptimizedSecurityTaxonomy
  */
 public final class PromptBuilder {
+
+    /**
+     * Deterministically extracted test method descriptor supplied to the prompt.
+     *
+     * @param methodName name of the JUnit test method
+     * @param beginLine  first source line of the method, or {@code null} if unknown
+     * @param endLine    last source line of the method, or {@code null} if unknown
+     */
+    public record TargetMethod(String methodName, Integer beginLine, Integer endLine) {
+        public TargetMethod {
+            Objects.requireNonNull(methodName, "methodName");
+            if (methodName.isBlank()) {
+                throw new IllegalArgumentException("methodName must not be blank");
+            }
+        }
+    }
+
     /**
      * Prevents instantiation of this utility class.
      */
@@ -55,6 +83,7 @@ public final class PromptBuilder {
      * <ul>
      * <li>task instructions describing the classification objective</li>
      * <li>the security taxonomy definition controlling allowed tags</li>
+     * <li>the exact list of target test methods to classify</li>
      * <li>strict output rules enforcing JSON-only responses</li>
      * <li>a formal JSON schema describing the expected result structure</li>
      * <li>the fully qualified class name of the analyzed test class</li>
@@ -73,22 +102,40 @@ public final class PromptBuilder {
      * in chat-based inference APIs.
      * </p>
      *
-     * @param fqcn         fully qualified class name of the test class being
+     * @param fqcn          fully qualified class name of the test class being
-     *                     analyzed
+     *                      analyzed
-     * @param classSource  complete source code of the test class
+     * @param classSource   complete source code of the test class
-     * @param taxonomyText taxonomy definition guiding classification
+     * @param taxonomyText  taxonomy definition guiding classification
+     * @param targetMethods exact list of deterministically discovered JUnit test
+     *                      methods to classify
      * @return formatted prompt supplied to the AI provider
      *
      * @see AiSuggestionEngine#suggestForClass(String, String)
      */
-    public static String build(String fqcn, String classSource, String taxonomyText) {
+    public static String build(String fqcn, String classSource, String taxonomyText, List<TargetMethod> targetMethods) {
+        Objects.requireNonNull(fqcn, "fqcn");
+        Objects.requireNonNull(classSource, "classSource");
+        Objects.requireNonNull(taxonomyText, "taxonomyText");
+        Objects.requireNonNull(targetMethods, "targetMethods");
+
+        if (targetMethods.isEmpty()) {
+            throw new IllegalArgumentException("targetMethods must not be empty");
+        }
+
+        String targetMethodBlock = targetMethods.stream().map(PromptBuilder::formatTargetMethod)
+                .collect(Collectors.joining("\n"));
+
+        String expectedMethodNames = targetMethods.stream().map(TargetMethod::methodName)
+                .map(name -> "\"" + name + "\"").collect(Collectors.joining(", "));
+
         return """
                 You are analyzing a single JUnit 5 test class and suggesting security tags.
 
                 TASK
                 - Analyze the WHOLE class for context.
-                - Return per-method suggestions for JUnit test methods only.
+                - Classify ONLY the methods explicitly listed in TARGET TEST METHODS.
                 - Do not invent methods that do not exist.
+                - Do not classify helper methods, lifecycle methods, nested classes, or any method not listed.
                 - Be conservative.
                 - If uncertain, classify the method as securityRelevant=false.
                 - Ignore pure functional / performance / UX tests unless they explicitly validate a security property.
@@ -96,17 +143,30 @@ public final class PromptBuilder {
                 CONTROLLED TAXONOMY
                 %s
 
+                TARGET TEST METHODS
+                The following methods were extracted deterministically by the parser and are the ONLY methods
+                you are allowed to classify. Use the full class source only as context for understanding them.
+
+                %s
+
                 OUTPUT RULES
                 - Return JSON only.
                 - No markdown.
                 - No prose outside JSON.
+                - Return exactly one result for each target method.
+                - methodName values in the output must exactly match one of:
+                  [%s]
+                - Do not omit any listed method.
+                - Do not include any additional methods.
                 - Tags must come only from this closed set:
                   security, auth, access-control, crypto, input-validation, injection, data-protection, logging, error-handling, owasp
                 - If securityRelevant=true, tags MUST include "security".
                 - Add 1-3 tags total per method.
-                - displayName must be null when securityRelevant=false.
+                - If securityRelevant=false, displayName must be null.
+                - If securityRelevant=false, tags must be [].
                 - If securityRelevant=true, displayName must match:
                   SECURITY: <control/property> - <scenario>
+                - reason should be short and specific.
 
                 JSON SHAPE
                 {
@@ -131,6 +191,17 @@ public final class PromptBuilder {
                 SOURCE
                 %s
                 """
-                .formatted(taxonomyText, fqcn, classSource);
+                .formatted(taxonomyText, targetMethodBlock, expectedMethodNames, fqcn, classSource);
+    }
+
+    private static String formatTargetMethod(TargetMethod targetMethod) {
+        StringBuilder builder = new StringBuilder("- ").append(targetMethod.methodName());
+
+        if (targetMethod.beginLine() != null || targetMethod.endLine() != null) {
+            builder.append(" [lines ").append(targetMethod.beginLine() == null ? "?" : targetMethod.beginLine())
+                    .append('-').append(targetMethod.endLine() == null ? "?" : targetMethod.endLine()).append(']');
+        }
+
+        return builder.toString();
     }
 }

src/test/java/org/egothor/methodatlas/MethodAtlasAppAiTest.java

@@ -4,6 +4,7 @@ import static org.junit.jupiter.api.Assertions.assertEquals;
 import static org.junit.jupiter.api.Assertions.assertFalse;
 import static org.junit.jupiter.api.Assertions.assertNotNull;
 import static org.junit.jupiter.api.Assertions.assertTrue;
+import static org.mockito.ArgumentMatchers.any;
 import static org.mockito.ArgumentMatchers.anyString;
 import static org.mockito.ArgumentMatchers.eq;
 import static org.mockito.Mockito.mockConstruction;
@@ -39,15 +40,15 @@ class MethodAtlasAppAiTest {
 
         try (MockedConstruction<AiSuggestionEngineImpl> mocked = mockConstruction(AiSuggestionEngineImpl.class,
                 (mock, context) -> {
-                    when(mock.suggestForClass(eq("com.acme.tests.SampleOneTest"), anyString()))
+                    when(mock.suggestForClass(eq("com.acme.tests.SampleOneTest"), anyString(), any()))
                             .thenReturn(sampleOneSuggestion());
-                    when(mock.suggestForClass(eq("com.acme.other.AnotherTest"), anyString()))
+                    when(mock.suggestForClass(eq("com.acme.other.AnotherTest"), anyString(), any()))
                             .thenReturn(anotherSuggestion());
-                    when(mock.suggestForClass(eq("com.acme.security.AccessControlServiceTest"), anyString()))
+                    when(mock.suggestForClass(eq("com.acme.security.AccessControlServiceTest"), anyString(), any()))
                             .thenReturn(accessControlSuggestion());
-                    when(mock.suggestForClass(eq("com.acme.storage.PathTraversalValidationTest"), anyString()))
+                    when(mock.suggestForClass(eq("com.acme.storage.PathTraversalValidationTest"), anyString(), any()))
                             .thenReturn(pathTraversalSuggestion());
-                    when(mock.suggestForClass(eq("com.acme.audit.AuditLoggingTest"), anyString()))
+                    when(mock.suggestForClass(eq("com.acme.audit.AuditLoggingTest"), anyString(), any()))
                             .thenReturn(auditLoggingSuggestion());
                 })) {
 
@@ -99,15 +100,15 @@ class MethodAtlasAppAiTest {
 
         try (MockedConstruction<AiSuggestionEngineImpl> mocked = mockConstruction(AiSuggestionEngineImpl.class,
                 (mock, context) -> {
-                    when(mock.suggestForClass(eq("com.acme.tests.SampleOneTest"), anyString()))
+                    when(mock.suggestForClass(eq("com.acme.tests.SampleOneTest"), anyString(), any()))
                             .thenReturn(sampleOneSuggestion());
-                    when(mock.suggestForClass(eq("com.acme.other.AnotherTest"), anyString()))
+                    when(mock.suggestForClass(eq("com.acme.other.AnotherTest"), anyString(), any()))
                             .thenReturn(anotherSuggestion());
-                    when(mock.suggestForClass(eq("com.acme.security.AccessControlServiceTest"), anyString()))
+                    when(mock.suggestForClass(eq("com.acme.security.AccessControlServiceTest"), anyString(), any()))
                             .thenThrow(new AiSuggestionException("Simulated provider failure"));
-                    when(mock.suggestForClass(eq("com.acme.storage.PathTraversalValidationTest"), anyString()))
+                    when(mock.suggestForClass(eq("com.acme.storage.PathTraversalValidationTest"), anyString(), any()))
                             .thenReturn(pathTraversalSuggestion());
-                    when(mock.suggestForClass(eq("com.acme.audit.AuditLoggingTest"), anyString()))
+                    when(mock.suggestForClass(eq("com.acme.audit.AuditLoggingTest"), anyString(), any()))
                             .thenReturn(auditLoggingSuggestion());
                 })) {
 
@@ -167,7 +168,7 @@ class MethodAtlasAppAiTest {
             assertEquals("", row.get(7));
 
             assertEquals(1, mocked.constructed().size(), "Expected one AI engine instance");
-            verify(mocked.constructed().get(0), never()).suggestForClass(anyString(), anyString());
+            verify(mocked.constructed().get(0), never()).suggestForClass(anyString(), anyString(), any());
         }
     }
 

src/test/java/org/egothor/methodatlas/ai/AiSuggestionEngineImplTest.java

@@ -34,22 +34,31 @@ class AiSuggestionEngineImplTest {
                         "SECURITY: authentication - reject unauthenticated request", List.of("security", "auth"),
                         "The test verifies that anonymous access is rejected.")));
 
+        List<PromptBuilder.TargetMethod> targetMethods = List
+                .of(new PromptBuilder.TargetMethod("shouldAllowOwnerToReadOwnStatement", null, null),
+                        new PromptBuilder.TargetMethod("shouldAllowAdministratorToReadAnyStatement", null, null),
+                        new PromptBuilder.TargetMethod("shouldDenyForeignUserFromReadingAnotherUsersStatement", null,
+                                null),
+                        new PromptBuilder.TargetMethod("shouldRejectUnauthenticatedRequest", null, null),
+                        new PromptBuilder.TargetMethod("shouldRenderFriendlyAccountLabel", null, null));
+
         AiOptions options = AiOptions.builder().enabled(true).provider(AiProvider.OPENAI).build();
 
         try (MockedStatic<AiProviderFactory> factory = mockStatic(AiProviderFactory.class)) {
             factory.when(() -> AiProviderFactory.create(options)).thenReturn(client);
             when(client.suggestForClass(eq("com.acme.security.AccessControlServiceTest"),
-                    eq("class AccessControlServiceTest {}"), eq(DefaultSecurityTaxonomy.text()))).thenReturn(expected);
+                    eq("class AccessControlServiceTest {}"), eq(DefaultSecurityTaxonomy.text()), eq(targetMethods)))
+                    .thenReturn(expected);
 
             AiSuggestionEngineImpl engine = new AiSuggestionEngineImpl(options);
             AiClassSuggestion actual = engine.suggestForClass("com.acme.security.AccessControlServiceTest",
-                    "class AccessControlServiceTest {}");
+                    "class AccessControlServiceTest {}", targetMethods);
 
             assertSame(expected, actual);
 
             factory.verify(() -> AiProviderFactory.create(options));
             verify(client).suggestForClass("com.acme.security.AccessControlServiceTest",
-                    "class AccessControlServiceTest {}", DefaultSecurityTaxonomy.text());
+                    "class AccessControlServiceTest {}", DefaultSecurityTaxonomy.text(), targetMethods);
             verifyNoMoreInteractions(client);
         }
     }
@@ -64,24 +73,30 @@ class AiSuggestionEngineImplTest {
                         List.of("security", "input-validation", "owasp"),
                         "The test rejects a classic path traversal payload.")));
 
+        List<PromptBuilder.TargetMethod> targetMethods = List.of(
+                new PromptBuilder.TargetMethod("shouldRejectRelativePathTraversalSequence", null, null),
+                new PromptBuilder.TargetMethod("shouldRejectNestedTraversalAfterNormalization", null, null),
+                new PromptBuilder.TargetMethod("shouldAllowSafePathInsideUploadRoot", null, null),
+                new PromptBuilder.TargetMethod("shouldBuildDownloadFileName", null, null));
+
         AiOptions options = AiOptions.builder().enabled(true).provider(AiProvider.OLLAMA)
                 .taxonomyMode(AiOptions.TaxonomyMode.OPTIMIZED).build();
 
         try (MockedStatic<AiProviderFactory> factory = mockStatic(AiProviderFactory.class)) {
             factory.when(() -> AiProviderFactory.create(options)).thenReturn(client);
             when(client.suggestForClass(eq("com.acme.storage.PathTraversalValidationTest"),
-                    eq("class PathTraversalValidationTest {}"), eq(OptimizedSecurityTaxonomy.text())))
+                    eq("class PathTraversalValidationTest {}"), eq(OptimizedSecurityTaxonomy.text()),
-                    .thenReturn(expected);
+                    eq(targetMethods))).thenReturn(expected);
 
             AiSuggestionEngineImpl engine = new AiSuggestionEngineImpl(options);
             AiClassSuggestion actual = engine.suggestForClass("com.acme.storage.PathTraversalValidationTest",
-                    "class PathTraversalValidationTest {}");
+                    "class PathTraversalValidationTest {}", targetMethods);
 
             assertSame(expected, actual);
 
             factory.verify(() -> AiProviderFactory.create(options));
             verify(client).suggestForClass("com.acme.storage.PathTraversalValidationTest",
-                    "class PathTraversalValidationTest {}", OptimizedSecurityTaxonomy.text());
+                    "class PathTraversalValidationTest {}", OptimizedSecurityTaxonomy.text(), targetMethods);
             verifyNoMoreInteractions(client);
         }
     }
@@ -104,23 +119,29 @@ class AiSuggestionEngineImplTest {
                         "SECURITY: logging - redact bearer token", List.of("security", "logging"),
                         "The test ensures credentials are not written to logs.")));
 
+        List<PromptBuilder.TargetMethod> targetMethods = List.of(
+                new PromptBuilder.TargetMethod("shouldWriteAuditEventForPrivilegeChange", null, null),
+                new PromptBuilder.TargetMethod("shouldNotLogRawBearerToken", null, null),
+                new PromptBuilder.TargetMethod("shouldNotLogPlaintextPasswordOnAuthenticationFailure", null, null),
+                new PromptBuilder.TargetMethod("shouldFormatHumanReadableSupportMessage", null, null));
+
         AiOptions options = AiOptions.builder().enabled(true).provider(AiProvider.OPENROUTER).taxonomyFile(taxonomyFile)
                 .build();
 
         try (MockedStatic<AiProviderFactory> factory = mockStatic(AiProviderFactory.class)) {
             factory.when(() -> AiProviderFactory.create(options)).thenReturn(client);
             when(client.suggestForClass(eq("com.acme.audit.AuditLoggingTest"), eq("class AuditLoggingTest {}"),
-                    eq(taxonomyText))).thenReturn(expected);
+                    eq(taxonomyText), eq(targetMethods))).thenReturn(expected);
 
             AiSuggestionEngineImpl engine = new AiSuggestionEngineImpl(options);
             AiClassSuggestion actual = engine.suggestForClass("com.acme.audit.AuditLoggingTest",
-                    "class AuditLoggingTest {}");
+                    "class AuditLoggingTest {}", targetMethods);
 
             assertSame(expected, actual);
 
             factory.verify(() -> AiProviderFactory.create(options));
-            verify(client).suggestForClass("com.acme.audit.AuditLoggingTest", "class AuditLoggingTest {}",
+            verify(client).suggestForClass("com.acme.audit.AuditLoggingTest", "class AuditLoggingTest {}", taxonomyText,
-                    taxonomyText);
+                    targetMethods);
             verifyNoMoreInteractions(client);
         }
     }

src/test/java/org/egothor/methodatlas/ai/OllamaClientTest.java

@@ -82,6 +82,11 @@ class OllamaClientTest {
                 }
                 """;
         String taxonomyText = "security, input-validation, owasp";
+        List<PromptBuilder.TargetMethod> targetMethods = List.of(
+                new PromptBuilder.TargetMethod("shouldRejectRelativePathTraversalSequence", null, null),
+                new PromptBuilder.TargetMethod("shouldRejectNestedTraversalAfterNormalization", null, null),
+                new PromptBuilder.TargetMethod("shouldAllowSafePathInsideUploadRoot", null, null),
+                new PromptBuilder.TargetMethod("shouldBuildDownloadFileName", null, null));
 
         String responseBody = """
                 {
@@ -111,7 +116,7 @@ class OllamaClientTest {
                     .modelName("qwen2.5-coder:7b").baseUrl("http://localhost:11434").build();
 
             OllamaClient client = new OllamaClient(options);
-            AiClassSuggestion suggestion = client.suggestForClass(fqcn, classSource, taxonomyText);
+            AiClassSuggestion suggestion = client.suggestForClass(fqcn, classSource, taxonomyText, targetMethods);
 
             assertEquals(fqcn, suggestion.className());
             assertEquals(Boolean.TRUE, suggestion.classSecurityRelevant());
@@ -137,12 +142,12 @@ class OllamaClientTest {
             assertNotNull(requestBody);
             assertTrue(requestBody.contains("\"model\":\"qwen2.5-coder:7b\""));
             assertTrue(requestBody.contains("\"stream\":false"));
-            assertTrue(requestBody.contains("You are a precise software security classification engine."));
-            assertTrue(requestBody.contains("You classify JUnit 5 tests and return strict JSON only."));
-            assertTrue(requestBody.contains("\"temperature\":0.0"));
             assertTrue(requestBody.contains("FQCN: " + fqcn));
             assertTrue(requestBody.contains("PathTraversalValidationTest"));
             assertTrue(requestBody.contains("shouldRejectRelativePathTraversalSequence"));
+            assertTrue(requestBody.contains("shouldRejectNestedTraversalAfterNormalization"));
+            assertTrue(requestBody.contains("shouldAllowSafePathInsideUploadRoot"));
+            assertTrue(requestBody.contains("shouldBuildDownloadFileName"));
             assertTrue(requestBody.contains(taxonomyText));
         }
     }
@@ -152,6 +157,12 @@ class OllamaClientTest {
         ObjectMapper mapper = new ObjectMapper().configure(DeserializationFeature.FAIL_ON_UNKNOWN_PROPERTIES, false);
 
         String fqcn = "com.acme.audit.AuditLoggingTest";
+        List<PromptBuilder.TargetMethod> targetMethods = List.of(
+                new PromptBuilder.TargetMethod("shouldWriteAuditEventForPrivilegeChange", null, null),
+                new PromptBuilder.TargetMethod("shouldNotLogRawBearerToken", null, null),
+                new PromptBuilder.TargetMethod("shouldNotLogPlaintextPasswordOnAuthenticationFailure", null, null),
+                new PromptBuilder.TargetMethod("shouldFormatHumanReadableSupportMessage", null, null));
+
         String responseBody = """
                 {
                   "message": {
@@ -176,7 +187,8 @@ class OllamaClientTest {
             OllamaClient client = new OllamaClient(options);
 
             AiSuggestionException ex = org.junit.jupiter.api.Assertions.assertThrows(AiSuggestionException.class,
-                    () -> client.suggestForClass(fqcn, "class AuditLoggingTest {}", "security, logging"));
+                    () -> client.suggestForClass(fqcn, "class AuditLoggingTest {}", "security, logging",
+                            targetMethods));
 
             assertEquals("Ollama suggestion failed for " + fqcn, ex.getMessage());
             assertInstanceOf(AiSuggestionException.class, ex.getCause());
@@ -188,4 +200,4 @@ class OllamaClientTest {
     private static HttpResponse.BodyHandler<Void> anyVoidBodyHandler() {
         return any(HttpResponse.BodyHandler.class);
     }
-}
+}

src/test/java/org/egothor/methodatlas/ai/OpenAiCompatibleClientTest.java

@@ -54,6 +54,13 @@ class OpenAiCompatibleClientTest {
                 }
                 """;
         String taxonomyText = "security, auth, access-control";
+        List<PromptBuilder.TargetMethod> targetMethods = List
+                .of(new PromptBuilder.TargetMethod("shouldAllowOwnerToReadOwnStatement", null, null),
+                        new PromptBuilder.TargetMethod("shouldAllowAdministratorToReadAnyStatement", null, null),
+                        new PromptBuilder.TargetMethod("shouldDenyForeignUserFromReadingAnotherUsersStatement", null,
+                                null),
+                        new PromptBuilder.TargetMethod("shouldRejectUnauthenticatedRequest", null, null),
+                        new PromptBuilder.TargetMethod("shouldRenderFriendlyAccountLabel", null, null));
 
         String responseBody = """
                 {
@@ -74,7 +81,7 @@ class OpenAiCompatibleClientTest {
                     .baseUrl("https://api.openai.com").apiKey("sk-test-value").build();
 
             OpenAiCompatibleClient client = new OpenAiCompatibleClient(options);
-            AiClassSuggestion suggestion = client.suggestForClass(fqcn, classSource, taxonomyText);
+            AiClassSuggestion suggestion = client.suggestForClass(fqcn, classSource, taxonomyText, targetMethods);
 
             assertEquals(fqcn, suggestion.className());
             assertEquals(Boolean.TRUE, suggestion.classSecurityRelevant());
@@ -100,11 +107,13 @@ class OpenAiCompatibleClientTest {
             String requestBody = capturedBody.get();
             assertNotNull(requestBody);
             assertTrue(requestBody.contains("\"model\":\"gpt-4o-mini\""));
-            assertTrue(requestBody.contains("You are a precise software security classification engine."));
-            assertTrue(requestBody.contains("You classify JUnit 5 tests and return strict JSON only."));
             assertTrue(requestBody.contains("FQCN: " + fqcn));
             assertTrue(requestBody.contains("AccessControlServiceTest"));
+            assertTrue(requestBody.contains("shouldAllowOwnerToReadOwnStatement"));
+            assertTrue(requestBody.contains("shouldAllowAdministratorToReadAnyStatement"));
+            assertTrue(requestBody.contains("shouldDenyForeignUserFromReadingAnotherUsersStatement"));
             assertTrue(requestBody.contains("shouldRejectUnauthenticatedRequest"));
+            assertTrue(requestBody.contains("shouldRenderFriendlyAccountLabel"));
             assertTrue(requestBody.contains(taxonomyText));
             assertTrue(requestBody.contains("\"temperature\":0.0"));
         }
@@ -126,13 +135,19 @@ class OpenAiCompatibleClientTest {
                 }
                 """;
 
+        List<PromptBuilder.TargetMethod> targetMethods = List.of(
+                new PromptBuilder.TargetMethod("shouldWriteAuditEventForPrivilegeChange", null, null),
+                new PromptBuilder.TargetMethod("shouldNotLogRawBearerToken", null, null),
+                new PromptBuilder.TargetMethod("shouldNotLogPlaintextPasswordOnAuthenticationFailure", null, null),
+                new PromptBuilder.TargetMethod("shouldFormatHumanReadableSupportMessage", null, null));
+
         try (MockedConstruction<HttpSupport> mocked = mockHttpSupport(mapper, responseBody, null)) {
             AiOptions options = AiOptions.builder().enabled(true).provider(AiProvider.OPENROUTER)
                     .modelName("openai/gpt-4o-mini").baseUrl("https://openrouter.ai/api").apiKey("or-test-key").build();
 
             OpenAiCompatibleClient client = new OpenAiCompatibleClient(options);
             AiClassSuggestion suggestion = client.suggestForClass("com.acme.audit.AuditLoggingTest",
-                    "class AuditLoggingTest {}", "security, logging");
+                    "class AuditLoggingTest {}", "security, logging", targetMethods);
 
             assertEquals("com.acme.audit.AuditLoggingTest", suggestion.className());
 
@@ -157,6 +172,12 @@ class OpenAiCompatibleClientTest {
                 }
                 """;
 
+        List<PromptBuilder.TargetMethod> targetMethods = List.of(
+                new PromptBuilder.TargetMethod("shouldWriteAuditEventForPrivilegeChange", null, null),
+                new PromptBuilder.TargetMethod("shouldNotLogRawBearerToken", null, null),
+                new PromptBuilder.TargetMethod("shouldNotLogPlaintextPasswordOnAuthenticationFailure", null, null),
+                new PromptBuilder.TargetMethod("shouldFormatHumanReadableSupportMessage", null, null));
+
         try (MockedConstruction<HttpSupport> mocked = mockHttpSupport(mapper, responseBody, null)) {
             AiOptions options = AiOptions.builder().enabled(true).provider(AiProvider.OPENAI).apiKey("sk-test-value")
                     .build();
@@ -164,7 +185,8 @@ class OpenAiCompatibleClientTest {
             OpenAiCompatibleClient client = new OpenAiCompatibleClient(options);
 
             AiSuggestionException ex = org.junit.jupiter.api.Assertions.assertThrows(AiSuggestionException.class,
-                    () -> client.suggestForClass(fqcn, "class AuditLoggingTest {}", "security, logging"));
+                    () -> client.suggestForClass(fqcn, "class AuditLoggingTest {}", "security, logging",
+                            targetMethods));
 
             assertEquals("OpenAI-compatible suggestion failed for " + fqcn, ex.getMessage());
             assertInstanceOf(AiSuggestionException.class, ex.getCause());
@@ -189,6 +211,12 @@ class OpenAiCompatibleClientTest {
                 }
                 """;
 
+        List<PromptBuilder.TargetMethod> targetMethods = List.of(
+                new PromptBuilder.TargetMethod("shouldWriteAuditEventForPrivilegeChange", null, null),
+                new PromptBuilder.TargetMethod("shouldNotLogRawBearerToken", null, null),
+                new PromptBuilder.TargetMethod("shouldNotLogPlaintextPasswordOnAuthenticationFailure", null, null),
+                new PromptBuilder.TargetMethod("shouldFormatHumanReadableSupportMessage", null, null));
+
         try (MockedConstruction<HttpSupport> mocked = mockHttpSupport(mapper, responseBody, null)) {
             AiOptions options = AiOptions.builder().enabled(true).provider(AiProvider.OPENAI).apiKey("sk-test-value")
                     .build();
@@ -196,7 +224,8 @@ class OpenAiCompatibleClientTest {
             OpenAiCompatibleClient client = new OpenAiCompatibleClient(options);
 
             AiSuggestionException ex = org.junit.jupiter.api.Assertions.assertThrows(AiSuggestionException.class,
-                    () -> client.suggestForClass(fqcn, "class AuditLoggingTest {}", "security, logging"));
+                    () -> client.suggestForClass(fqcn, "class AuditLoggingTest {}", "security, logging",
+                            targetMethods));
 
             assertEquals("OpenAI-compatible suggestion failed for " + fqcn, ex.getMessage());
             assertInstanceOf(AiSuggestionException.class, ex.getCause());

src/test/java/org/egothor/methodatlas/ai/PromptBuilderTest.java

@@ -1,8 +1,11 @@
 package org.egothor.methodatlas.ai;
 
 import static org.junit.jupiter.api.Assertions.assertEquals;
+import static org.junit.jupiter.api.Assertions.assertThrows;
 import static org.junit.jupiter.api.Assertions.assertTrue;
 
+import java.util.List;
+
 import org.junit.jupiter.api.Test;
 
 class PromptBuilderTest {
@@ -33,22 +36,31 @@ class PromptBuilderTest {
                 - logging
                 """;
 
-        String prompt = PromptBuilder.build(fqcn, classSource, taxonomyText);
+        List<PromptBuilder.TargetMethod> targetMethods = List.of(
+                new PromptBuilder.TargetMethod("shouldRejectUnauthenticatedRequest", 8, 8),
+                new PromptBuilder.TargetMethod("shouldAllowOwnerToReadOwnStatement", 11, 11));
+
+        String prompt = PromptBuilder.build(fqcn, classSource, taxonomyText, targetMethods);
 
         assertTrue(prompt.contains("FQCN: " + fqcn));
         assertTrue(prompt.contains(classSource));
         assertTrue(prompt.contains(taxonomyText));
+        assertTrue(prompt.contains("- shouldRejectUnauthenticatedRequest [lines 8-8]"));
+        assertTrue(prompt.contains("- shouldAllowOwnerToReadOwnStatement [lines 11-11]"));
     }
 
     @Test
     void build_containsExpectedTaskInstructions() {
         String prompt = PromptBuilder.build("com.acme.audit.AuditLoggingTest", "class AuditLoggingTest {}",
-                "security, logging");
+                "security, logging",
+                List.of(new PromptBuilder.TargetMethod("shouldWriteAuditEventForPrivilegeChange", null, null)));
 
         assertTrue(prompt.contains("You are analyzing a single JUnit 5 test class and suggesting security tags."));
         assertTrue(prompt.contains("- Analyze the WHOLE class for context."));
-        assertTrue(prompt.contains("- Return per-method suggestions for JUnit test methods only."));
+        assertTrue(prompt.contains("- Classify ONLY the methods explicitly listed in TARGET TEST METHODS."));
         assertTrue(prompt.contains("- Do not invent methods that do not exist."));
+        assertTrue(prompt.contains(
+                "- Do not classify helper methods, lifecycle methods, nested classes, or any method not listed."));
         assertTrue(prompt.contains("- Be conservative."));
         assertTrue(prompt.contains("- If uncertain, classify the method as securityRelevant=false."));
     }
@@ -56,7 +68,8 @@ class PromptBuilderTest {
     @Test
     void build_containsClosedTaxonomyRules() {
         String prompt = PromptBuilder.build("com.acme.storage.PathTraversalValidationTest",
-                "class PathTraversalValidationTest {}", "security, input-validation, injection");
+                "class PathTraversalValidationTest {}", "security, input-validation, injection",
+                List.of(new PromptBuilder.TargetMethod("shouldRejectRelativePathTraversalSequence", null, null)));
 
         assertTrue(prompt.contains("Tags must come only from this closed set:"));
         assertTrue(prompt.contains(
@@ -68,9 +81,10 @@ class PromptBuilderTest {
     @Test
     void build_containsDisplayNameRules() {
         String prompt = PromptBuilder.build("com.acme.security.AccessControlServiceTest",
-                "class AccessControlServiceTest {}", "security, auth, access-control");
+                "class AccessControlServiceTest {}", "security, auth, access-control",
+                List.of(new PromptBuilder.TargetMethod("shouldRejectUnauthenticatedRequest", null, null)));
 
-        assertTrue(prompt.contains("displayName must be null when securityRelevant=false."));
+        assertTrue(prompt.contains("If securityRelevant=false, displayName must be null."));
         assertTrue(prompt.contains("If securityRelevant=true, displayName must match:"));
         assertTrue(prompt.contains("SECURITY: <control/property> - <scenario>"));
     }
@@ -78,7 +92,8 @@ class PromptBuilderTest {
     @Test
     void build_containsJsonShapeContract() {
         String prompt = PromptBuilder.build("com.acme.audit.AuditLoggingTest", "class AuditLoggingTest {}",
-                "security, logging");
+                "security, logging",
+                List.of(new PromptBuilder.TargetMethod("shouldWriteAuditEventForPrivilegeChange", null, null)));
 
         assertTrue(prompt.contains("JSON SHAPE"));
         assertTrue(prompt.contains("\"className\": \"string\""));
@@ -105,10 +120,24 @@ class PromptBuilderTest {
                 """;
 
         String prompt = PromptBuilder.build("com.acme.storage.PathTraversalValidationTest", classSource,
-                "security, input-validation, injection");
+                "security, input-validation, injection",
+                List.of(new PromptBuilder.TargetMethod("shouldRejectRelativePathTraversalSequence", 3, 5)));
 
         assertTrue(prompt.contains("String userInput = \"../etc/passwd\";"));
         assertTrue(prompt.contains("void shouldRejectRelativePathTraversalSequence()"));
+        assertTrue(prompt.contains("- shouldRejectRelativePathTraversalSequence [lines 3-5]"));
+    }
+
+    @Test
+    void build_includesExpectedMethodNamesConstraint() {
+        String prompt = PromptBuilder.build("com.acme.tests.SampleOneTest", "class SampleOneTest {}",
+                "security, crypto", List.of(new PromptBuilder.TargetMethod("alpha", 1, 1),
+                        new PromptBuilder.TargetMethod("beta", 2, 2), new PromptBuilder.TargetMethod("gamma", 3, 3)));
+
+        assertTrue(prompt.contains("- methodName values in the output must exactly match one of:"));
+        assertTrue(prompt.contains("[\"alpha\", \"beta\", \"gamma\"]"));
+        assertTrue(prompt.contains("- Do not omit any listed method."));
+        assertTrue(prompt.contains("- Do not include any additional methods."));
     }
 
     @Test
@@ -116,10 +145,19 @@ class PromptBuilderTest {
         String fqcn = "com.example.X";
         String source = "class X {}";
         String taxonomy = "security, logging";
+        List<PromptBuilder.TargetMethod> targetMethods = List.of(new PromptBuilder.TargetMethod("alpha", null, null));
 
-        String prompt1 = PromptBuilder.build(fqcn, source, taxonomy);
+        String prompt1 = PromptBuilder.build(fqcn, source, taxonomy, targetMethods);
-        String prompt2 = PromptBuilder.build(fqcn, source, taxonomy);
+        String prompt2 = PromptBuilder.build(fqcn, source, taxonomy, targetMethods);
 
         assertEquals(prompt1, prompt2);
     }
+
+    @Test
+    void build_rejectsEmptyTargetMethods() {
+        IllegalArgumentException ex = assertThrows(IllegalArgumentException.class,
+                () -> PromptBuilder.build("com.example.X", "class X {}", "security", List.of()));
+
+        assertEquals("targetMethods must not be empty", ex.getMessage());
+    }
 }