ci: use forks pool for CLI tests (#5679)

Author: sheremet-va

test/config/vitest.config.ts

@@ -6,7 +6,11 @@ export default defineConfig({
     include: ['test/**.test.ts'],
     reporters: ['verbose'],
     testTimeout: 60_000,
+    pool: 'forks',
     poolOptions: {
+      forks: {
+        singleFork: true,
+      },
       threads: {
         singleThread: true,
       },

test/reporters/vitest.config.ts

@@ -5,6 +5,7 @@ export default defineConfig({
     exclude: ['node_modules', 'fixtures', 'dist'],
     reporters: ['verbose'],
     testTimeout: 100000,
+    pool: 'forks',
     chaiConfig: {
       truncateThreshold: 0,
     },

test/watch/vitest.config.ts

@@ -4,6 +4,7 @@ export default defineConfig({
   test: {
     reporters: 'verbose',
     include: ['test/**/*.test.*'],
+    pool: 'forks',
     chaiConfig: {
       truncateThreshold: 0,
     },
@@ -13,6 +14,7 @@ export default defineConfig({
 
     // Test cases may have side effects, e.g. files under fixtures/ are modified on the fly to trigger file watchers
     poolOptions: {
+      forks: { singleFork: true },
       threads: { singleThread: true },
       vmThreads: { singleThread: true },
     },