Raise code coverage from 67.9% to 75.7%

drom-plans/coverage-75.md

@@ -0,0 +1,57 @@
+---
+title: Code Coverage to 75%
+status: completed
+created: 2026-03-28
+updated: 2026-03-28
+current_chapter: 1
+loop: true
+loop_target: 75.0
+loop_metric: instruction_coverage_percent
+loop_max_iterations: 3
+---
+
+# Plan: Code Coverage to 75%
+
+Raise JaCoCo instruction coverage from **67.9%** to **≥75%** using a closed-loop approach.
+
+**Baseline (2026-03-28):** 15,122 / 22,277 instructions covered (67.9%), 386 tests passing.
+**Need:** ~1,580 more instructions covered (16,708 / 22,277).
+
+## Priority targets (testable classes, by uncovered instructions)
+
+| Class | Coverage | Uncovered | Plan |
+|-------|----------|-----------|------|
+| ReladomoService | 56.5% | 346 | Expand: store/query edge cases |
+| IngestionWorker | 74.1% | 323 | Expand: error paths, HNSW build |
+| TextExtractor | 76.2% | 294 | Expand: RTF, more ODF/EPUB edges |
+| SearchService | 76.4% | 222 | Expand: HNSW path, edge cases |
+| CoChangeService | 59.2% | 216 | Expand: DB-backed buildIndex |
+| GitBlameService | 57.3% | 195 | Expand: DB-backed blame, edges |
+| ReladomoConfigParser | 20.1% | 195 | New: parse config XML tests |
+| SessionIngestionService | 83.0% | 177 | Expand: search, edge cases |
+
+## Chapter 1: Service Coverage Push (target: ≥75%)
+**Status:** completed
+**Depends on:** none
+
+Parallel agents targeting the 8 classes above. Each agent writes tests to cover the uncovered branches.
+
+- [ ] ReladomoService: test storeReladomoObject edge cases, update/delete paths — target 56% → 75%
+- [ ] CoChangeService + GitBlameService: DB-backed tests for buildCoChangeIndex with real git, blame edge cases — target 59%/57% → 75%
+- [ ] SearchService: test HNSW search path, extractEmbedding variants, empty results — target 76% → 85%
+- [ ] ReladomoConfigParser: test XML config parsing for connection managers, object configs — target 20% → 60%
+- [ ] IngestionWorker + TextExtractor + SessionIngestionService: expand edge case coverage — target 74%/76%/83% → 85%
+- [ ] Write all tests, run `mvn verify`, measure coverage
+- [ ] If ≥75%, mark plan completed
+
+## Closed-Loop Protocol
+
+1. Run `mvn verify -B`, parse `jacoco.csv` → instruction coverage %
+2. If ≥75%: **STOP**, mark plan completed
+3. If <75%: identify remaining gaps, write targeted tests, re-measure (max 2 extra iterations)
+
+## Exclusions (CLI/UI — 0% coverage, low ROI)
+IndexCommand, StatsPanel, InteractiveCli, CommandDispatcher, CatCommand, ApiClient,
+JavaDuckerClient (and nested Cmd classes), ResultsFormatter, ProgressBar, SearchCommand, StatusCommand
+
+---

src/main/java/com/javaducker/server/service/CoChangeService.java

@@ -37,6 +37,13 @@ public CoChangeService(DuckDBDataSource dataSource) {
      */
     public void buildCoChangeIndex() throws Exception {
         String gitOutput = runGitLog();
+        buildCoChangeIndexFromOutput(gitOutput);
+    }
+
+    /**
+     * Build co-change index from pre-parsed git log output. Package-private for testing.
+     */
+    void buildCoChangeIndexFromOutput(String gitOutput) throws Exception {
         Map<String, List<String>> commits = parseGitLog(gitOutput);
         Map<String, List<String>> filtered = filterNoisyCommits(commits);
         Set<String> frequentFiles = findFrequentFiles(filtered);
@@ -146,8 +153,9 @@ Map<String, List<String>> parseGitLog(String output) {
 
     /**
      * Filter out commits with more than MAX_FILES_PER_COMMIT files.
+     * Package-private for testing.
      */
-    private Map<String, List<String>> filterNoisyCommits(Map<String, List<String>> commits) {
+    Map<String, List<String>> filterNoisyCommits(Map<String, List<String>> commits) {
         Map<String, List<String>> filtered = new LinkedHashMap<>();
         for (Map.Entry<String, List<String>> entry : commits.entrySet()) {
             if (entry.getValue().size() <= MAX_FILES_PER_COMMIT) {