Dynamically create an invalid YAML file in tests to avoid tripping th…

…e linter.

Signed-off-by: dblock <dblock@amazon.com>

tools/tests/linter/NamespacesFolder.test.ts

@@ -7,56 +7,80 @@
 * compatible open source license.
 */
 
+import path from 'path'
+import os from 'os'
+import fs from 'fs'
 import NamespacesFolder from 'linter/components/NamespacesFolder'
 
-test('validate() - When there invalid files', () => {
-  const validator = new NamespacesFolder('./tools/tests/linter/fixtures/folder_validators/namespaces/invalid_files')
-  expect(validator.validate()).toEqual([
-    {
-      file: 'invalid_files/indices.txt',
-      location: 'File Extension',
-      message: "Invalid file extension. Only '.yaml' files are allowed."
-    },
-    {
-      file: 'invalid_files/invalid_spec.yaml',
-      location: 'Operation: GET /{index}/_doc/{id}',
-      message: 'Missing description property.'
-    },
-    {
-      file: 'invalid_files/invalid_spec.yaml',
-      location: 'Operation: GET /{index}/_doc/{id}',
-      message: "Every parameter must be a reference object to '#/components/parameters/{x-operation-group}::{path|query}.{parameter_name}'."
-    },
-    {
-      file: 'invalid_files/invalid_spec.yaml',
-      location: 'Operation: GET /{index}/_doc/{id}',
-      message: 'Path parameters must match the parameters in the path: {id}, {index}.'
-    },
-    {
-      file: 'invalid_files/invalid_spec.yaml',
-      location: 'Operation: GET /{index}/_doc/{id}',
-      message: "The 200 response must be a reference object to '#/components/responses/invalid_spec.fetch@200'."
-    },
-    {
-      file: 'invalid_files/invalid_yaml.yaml',
-      location: 'File Content',
-      message: 'Unable to read or parse YAML.'
-    }
-  ])
-})
+describe('validate()', () => {
+  test('when there invalid files', () => {
+    const validator = new NamespacesFolder('./tools/tests/linter/fixtures/folder_validators/namespaces/invalid_files')
+    expect(validator.validate()).toEqual([
+      {
+        file: 'invalid_files/indices.txt',
+        location: 'File Extension',
+        message: "Invalid file extension. Only '.yaml' files are allowed."
+      },
+      {
+        file: 'invalid_files/invalid_spec.yaml',
+        location: 'Operation: GET /{index}/_doc/{id}',
+        message: 'Missing description property.'
+      },
+      {
+        file: 'invalid_files/invalid_spec.yaml',
+        location: 'Operation: GET /{index}/_doc/{id}',
+        message: "Every parameter must be a reference object to '#/components/parameters/{x-operation-group}::{path|query}.{parameter_name}'."
+      },
+      {
+        file: 'invalid_files/invalid_spec.yaml',
+        location: 'Operation: GET /{index}/_doc/{id}',
+        message: 'Path parameters must match the parameters in the path: {id}, {index}.'
+      },
+      {
+        file: 'invalid_files/invalid_spec.yaml',
+        location: 'Operation: GET /{index}/_doc/{id}',
+        message: "The 200 response must be a reference object to '#/components/responses/invalid_spec.fetch@200'."
+      }
+    ])
+  })
 
-test('validate() - When the files are valid but the folder is not', () => {
-  const validator = new NamespacesFolder('./tools/tests/linter/fixtures/folder_validators/namespaces/invalid_folder')
-  expect(validator.validate()).toEqual([
-    {
-      file: 'invalid_folder/',
-      location: 'Folder',
-      message: "Duplicate path '/{index}' found in namespaces: dup_path_a, dup_path_c."
-    },
-    {
-      file: 'invalid_folder/',
-      location: 'Folder',
-      message: "Duplicate path '/{index}/_rollover' found in namespaces: dup_path_a, dup_path_b, dup_path_c."
-    }
-  ])
-})
+  test('when the files are valid but the folder is not', () => {
+    const validator = new NamespacesFolder('./tools/tests/linter/fixtures/folder_validators/namespaces/invalid_folder')
+    expect(validator.validate()).toEqual([
+      {
+        file: 'invalid_folder/',
+        location: 'Folder',
+        message: "Duplicate path '/{index}' found in namespaces: dup_path_a, dup_path_c."
+      },
+      {
+        file: 'invalid_folder/',
+        location: 'Folder',
+        message: "Duplicate path '/{index}/_rollover' found in namespaces: dup_path_a, dup_path_b, dup_path_c."
+      }
+    ])
+  })
+
+  describe('with invalid YAML', () => {
+    const invalid_yaml_path = path.join(os.tmpdir(), 'invalid_yaml')
+
+    beforeAll(() => {
+      fs.mkdirSync(invalid_yaml_path)
+      fs.writeFileSync(`${invalid_yaml_path}/invalid_yaml.yaml`, "```\nInvalid YAML file\n```")
+    })
+
+    afterAll(() => {
+      fs.rmdirSync(invalid_yaml_path, { recursive: true })
+    })
+
+    test('fails unable to parse YAML', () => {
+      const validator = new NamespacesFolder(invalid_yaml_path)
+      expect(validator.validate()).toEqual([
+        {
+          file: 'invalid_yaml/invalid_yaml.yaml',
+          location: 'File Content',
+          message: 'Unable to read or parse YAML.'
+        }
+      ])
+    })
+  })
+})