feat(integ-runner): ignore uncompiled TypeScript files if a compiled …

…version of the test is present
aws · mergify · Jan 5, 2023 · Sep 23, 2022 · Jan 4, 2023 · Jan 5, 2023
commit 2d9718996925b9fbd7d4e8790470c87dd649b849
diff --git a/packages/@aws-cdk/integ-runner/lib/runner/integration-tests.ts b/packages/@aws-cdk/integ-runner/lib/runner/integration-tests.ts
@@ -213,10 +213,13 @@ export class IntegrationTests {
 
     // Use the selected presets
     if (!options.app && !options.testRegex) {
+      // Only case with multiple languages, i.e. the only time we need to check the special case
+      const ignoreUncompiledTypeScript = options.language?.includes('javascript') && options.language?.includes('typescript');
+
       return this.discover({
         testCases: this.getLanguagePresets(options.language),
         ...baseOptions,
-      });
+      }, ignoreUncompiledTypeScript);
     }
 
     // Only one of app or test-regex is set, with a single preset selected
@@ -302,10 +305,10 @@ export class IntegrationTests {
    * @param tests Tests to include or exclude, undefined means include all tests.
    * @param exclude Whether the 'tests' list is inclusive or exclusive (inclusive by default).
    */
-  private async discover(options: IntegrationTestsDiscoveryOptions): Promise<IntegTest[]> {
+  private async discover(options: IntegrationTestsDiscoveryOptions, ignoreUncompiledTypeScript: boolean = false): Promise<IntegTest[]> {
     const files = await this.readTree();
 
-    const discoveredTests = Object.entries(options.testCases)
+    const testCases = Object.entries(options.testCases)
       .flatMap(([appCommand, patterns]) => files
         .filter(fileName => patterns.some((pattern) => {
           const regex = new RegExp(pattern);
@@ -318,9 +321,25 @@ export class IntegrationTests {
         })),
       );
 
+    const discoveredTests = ignoreUncompiledTypeScript ? this.filterUncompiledTypeScript(testCases) : testCases;
+
     return this.filterTests(discoveredTests, options.tests, options.exclude);
   }
 
+  private filterUncompiledTypeScript(testCases: IntegTest[]): IntegTest[] {
+    const jsTestCases = testCases.filter(t => t.fileName.endsWith('.js'));
+
+    return testCases
+      // Remove all TypeScript test cases (ending in .ts)
+      // for which a compiled version is present (same name, ending in .js)
+      .filter((tsCandidate) => {
+        if (!tsCandidate.fileName.endsWith('.ts')) {
+          return true;
+        }
+        return jsTestCases.findIndex(jsTest => jsTest.testName === tsCandidate.testName) === -1;
+      });
+  }
+
   private async readTree(): Promise<string[]> {
     const ret = new Array<string>();
 

diff --git a/packages/@aws-cdk/integ-runner/test/runner/integration-tests.test.ts b/packages/@aws-cdk/integ-runner/test/runner/integration-tests.test.ts
@@ -114,4 +114,19 @@ describe('IntegrationTests Discovery', () => {
       });
     });
   });
+
+  describe('Same test file in JS and TS is only running JS', () => {
+    const cliOptions = {
+      language: ['javascript', 'typescript'],
+    };
+
+    test('find only JS files', async () => {
+      const integTests = await tests.fromCliOptions(cliOptions);
+
+      expect(integTests.length).toEqual(3);
+      expect(integTests[0].fileName).toEqual(expect.stringMatching(new RegExp('^.*test1\\.js$')));
+      expect(integTests[1].fileName).toEqual(expect.stringMatching(new RegExp('^.*test2\\.js$')));
+      expect(integTests[2].fileName).toEqual(expect.stringMatching(new RegExp('^.*test3\\.js$')));
+    });
+  });
 });