test(ssr): remove env var, test coverage (#5139)

* test(ssr): remove SSR tests env var

* test: add code coverage

Author: nolanlawson

.github/workflows/unit.yml

@@ -66,9 +66,6 @@ jobs:
               run: yarn test:types
             - name: Run unit tests
               run: yarn test:ci
-            # TODO [#4815]: enable all SSR v2 tests
-            - name: Run experimental SSR fixture tests
-              run: TEST_SSR_COMPILER=1 yarn test packages/@lwc/ssr-compiler/src/__tests__/fixtures.spec.ts
             - name: Upload unit test coverage report
               uses: actions/upload-artifact@v4
               with:

packages/@lwc/ssr-compiler/src/__tests__/fixtures.spec.ts

@@ -77,9 +77,7 @@ async function compileFixture({ input, dirname }: { input: string; dirname: stri
     return outputFile;
 }
 
-// We will enable this for realsies once all the tests are passing, but for now having the env var avoids
-// running these tests in CI while still allowing for local testing.
-describe.runIf(process.env.TEST_SSR_COMPILER).concurrent('fixtures', () => {
+describe.concurrent('fixtures', () => {
     testFixtureDir(
         {
             root: path.resolve(__dirname, '../../../engine-server/src/__tests__/fixtures'),

vitest.config.mjs

@@ -29,17 +29,24 @@ export default defineConfig({
                 '**/packages/@lwc/perf-benchmarks-components/**',
                 '**/packages/@lwc/perf-benchmarks/**',
                 '**/playground/**',
-                // These are not production-ready yet
-                '**/packages/@lwc/ssr-compiler/**',
-                '**/packages/@lwc/ssr-runtime/**',
                 // This just re-exports other packages
                 '**/packages/lwc/**',
             ],
             thresholds: {
-                branches: 95,
-                functions: 95,
-                lines: 95,
-                statements: 95,
+                // SSR compiler/runtime is relatively newer, so has lower thresholds for now
+                '**/packages/@lwc/ssr-*/**': {
+                    branches: 90,
+                    functions: 60,
+                    lines: 85,
+                    statements: 85,
+                },
+
+                '!**/packages/@lwc/ssr-*/**': {
+                    branches: 95,
+                    functions: 95,
+                    lines: 95,
+                    statements: 95,
+                },
             },
             reporter: [
                 'clover',