test: fix unstable coverage tests (#596)

Author: 9aoy

e2e/test-coverage/fixtures/rstest.globThresholds.config.ts

@@ -5,6 +5,7 @@ export default defineConfig({
     enabled: true,
     provider: 'istanbul',
     reporters: [],
+    clean: false,
     thresholds: {
       'node/**': {
         statements: 90,

e2e/test-coverage/fixtures/rstest.include.config.ts

@@ -12,6 +12,7 @@ export default defineConfig({
       join(__dirname, 'src/b.ts'),
       './src/c.ts',
     ],
+    clean: false,
     reporters: ['text'],
   },
   setupFiles: ['./rstest.setup.ts'],

e2e/test-coverage/fixtures/rstest.perFileThresholds.config.ts

@@ -5,6 +5,7 @@ export default defineConfig({
     enabled: true,
     provider: 'istanbul',
     reporters: [],
+    clean: false,
     thresholds: {
       'src/**': {
         perFile: true,

e2e/test-coverage/fixtures/rstest.skipFull.config.ts

@@ -4,6 +4,7 @@ export default defineConfig({
   coverage: {
     enabled: true,
     provider: 'istanbul',
+    clean: false,
     reporters: [['text', { skipFull: true }]],
   },
   setupFiles: ['./rstest.setup.ts'],

e2e/test-coverage/fixtures/rstest.thresholds.config.ts

@@ -5,6 +5,7 @@ export default defineConfig({
     enabled: true,
     provider: 'istanbul',
     reporters: [],
+    clean: false,
     thresholds: {
       statements: 100,
       lines: -1,