fix(sdk): wing test fails if unable to clean up files (#6320)

If a container mounts a volume to the state directory as described in #6295, it can sometimes result in permission errors when the CLI is cleaning up files after `wing test` because the mounted directory may have different permissions.

```
EACCES: permission denied, scandir 'target/test/mount.test.wsim/.state/c892787d9270cdccc06c34c95f7f9738be92b19134'
```

This error only seems to happen on CI for me. I'm not sure of the cause but I'm guessing that in CI, docker runs in a different (rootless maybe?) mode than on macOS.

Unblocks winglang/winglibs#207

## Checklist

- [ ] Title matches [Winglang's style guide](https://www.winglang.io/contributing/start-here/pull_requests#how-are-pull-request-titles-formatted)
- [ ] Description explains motivation and solution
- [ ] Tests added (always)
- [ ] Docs updated (only required for features)
- [ ] Added `pr/e2e-full` label if this feature requires end-to-end testing

*By submitting this pull request, I confirm that my contribution is made under the terms of the [Wing Cloud Contribution License](https://github.com/winglang/wing/blob/main/CONTRIBUTION_LICENSE.md)*.

apps/wing/src/commands/test/test.ts

@@ -521,7 +521,11 @@ async function testSimulator(synthDir: string, options: TestOptions) {
   }
 
   if (clean) {
-    rmSync(synthDir, { recursive: true, force: true });
+    try {
+      rmSync(synthDir, { recursive: true, force: true });
+    } catch (err) {
+      console.warn(`Warning: unable to clean up test directory: ${err}`);
+    }
   } else {
     noCleanUp(synthDir);
   }

examples/tests/sdk_tests/container/mount.test.w

@@ -0,0 +1,21 @@
+bring sim;
+bring util;
+
+// This test was added to check that "wing test" still works when sim.Container is mounted to the state directory
+
+// only relevant in simulator
+if util.env("WING_TARGET") == "sim" {
+  let container = new sim.Container(
+    name: "postgres",
+    image: "postgres:15",
+    env: {
+      POSTGRES_PASSWORD: "password"
+    },
+    containerPort: 5432,
+    volumes: ["$WING_STATE_DIR:/var/lib/postgresql/data"],
+  );
+
+  test "my test" {
+    log("dummy test");
+  }
+}

libs/wingsdk/src/simulator/util.ts

@@ -2,7 +2,7 @@ import { access, constants } from "node:fs";
 import { promisify } from "node:util";
 
 /**
- * Check if a file exists for an specific path
+ * Check if a file exists for a specific path
  * @param filePath
  * @Returns Return `true` if the file exists, `false` otherwise.
  */

tools/hangar/__snapshots__/test_corpus/sdk_tests/container/mount.test.w_compile_tf-aws.md

@@ -0,0 +1,21 @@
+# [mount.test.w](../../../../../../examples/tests/sdk_tests/container/mount.test.w) | compile | tf-aws
+
+## main.tf.json
+```json
+{
+  "//": {
+    "metadata": {
+      "backend": "local",
+      "stackName": "root",
+      "version": "0.20.3"
+    },
+    "outputs": {}
+  },
+  "provider": {
+    "aws": [
+      {}
+    ]
+  }
+}
+```
+

tools/hangar/__snapshots__/test_corpus/sdk_tests/container/mount.test.w_test_sim.md

@@ -0,0 +1,18 @@
+# [mount.test.w](../../../../../../examples/tests/sdk_tests/container/mount.test.w) | test | sim
+
+## stderr.log
+```log
+Warning: unable to clean up test directory: Error: EACCES: permission denied, scandir 'target/test/mount.test.wsim/.state/<STATE_FILE>'
+```
+
+## stdout.log
+```log
+[INFO] my test | dummy test
+pass ─ mount.test.wsim » root/env0/test:my test
+
+Tests 1 passed (1)
+Snapshots 1 skipped
+Test Files 1 passed (1)
+Duration <DURATION>
+```
+