test: add failing tests for dedup key collision and parameterized case count

Two bugs reproduced:
- Test failure dedup key uses only location|message, collapsing distinct
  failures from different tests sharing the same assertion line
- Parameterized test results drop the case count, undercounting progress

Author: cameroncooke

src/utils/__tests__/swift-testing-line-parsers.test.ts

@@ -33,7 +33,7 @@ describe('Swift Testing line parsers', () => {
       });
     });
 
-    it('should parse a passed parameterized test', () => {
+    it('should parse a passed parameterized test with case count', () => {
       const result = parseSwiftTestingResultLine(
         '✔ Test "Parameterized test" with 3 test cases passed after 0.001 seconds.',
       );
@@ -42,6 +42,20 @@ describe('Swift Testing line parsers', () => {
         rawName: 'Parameterized test',
         testName: 'Parameterized test',
         durationText: '0.001s',
+        caseCount: 3,
+      });
+    });
+
+    it('should parse a failed parameterized test with case count', () => {
+      const result = parseSwiftTestingResultLine(
+        '✘ Test "Parameterized failure" with 3 test cases failed after 0.001 seconds with 1 issue.',
+      );
+      expect(result).toEqual({
+        status: 'failed',
+        rawName: 'Parameterized failure',
+        testName: 'Parameterized failure',
+        durationText: '0.001s',
+        caseCount: 3,
       });
     });
 

src/utils/__tests__/xcodebuild-run-state.test.ts

@@ -356,6 +356,31 @@ describe('xcodebuild-run-state', () => {
     expect(state.highestStageRank()).toBe(STAGE_RANK.COMPILING);
   });
 
+  it('does not deduplicate distinct test failures sharing the same assertion location', () => {
+    const state = createXcodebuildRunState({ operation: 'TEST' });
+
+    state.push({
+      type: 'test-failure',
+      timestamp: ts(),
+      operation: 'TEST',
+      suite: 'SuiteA',
+      test: 'testOne',
+      message: 'XCTAssertTrue failed',
+      location: '/tmp/SharedAssert.swift:10',
+    });
+    state.push({
+      type: 'test-failure',
+      timestamp: ts(),
+      operation: 'TEST',
+      suite: 'SuiteB',
+      test: 'testTwo',
+      message: 'XCTAssertTrue failed',
+      location: '/tmp/SharedAssert.swift:10',
+    });
+
+    expect(state.snapshot().testFailures).toHaveLength(2);
+  });
+
   it('passes through header and next-steps events', () => {
     const forwarded: PipelineEvent[] = [];
     const state = createXcodebuildRunState({