add the first unit tests for the PromptFilesConfig

src/vs/workbench/contrib/chat/test/common/promptSyntax/config.test.ts

@@ -0,0 +1,159 @@
+/*---------------------------------------------------------------------------------------------
+ *  Copyright (c) Microsoft Corporation. All rights reserved.
+ *  Licensed under the MIT License. See License.txt in the project root for license information.
+ *--------------------------------------------------------------------------------------------*/
+
+import * as assert from 'assert';
+import { PromptFilesConfig } from '../../../common/promptSyntax/config.js';
+import { ensureNoDisposablesAreLeakedInTestSuite } from '../../../../../../base/test/common/utils.js';
+import { IConfigurationService } from '../../../../../../platform/configuration/common/configuration.js';
+
+/**
+ * Mocked mocked instance of {@link IConfigurationService}.
+ */
+const createMock = <T>(value: T): IConfigurationService => {
+	const service = new Proxy(
+		{},
+		{
+			get: (_target, key) => {
+				assert.strictEqual(
+					key,
+					'getValue',
+					`Mocked configuration service supports only one method: 'getValue()'.`,
+				);
+
+				return (key: string) => {
+					assert.strictEqual(
+						key,
+						PromptFilesConfig.CONFIG_KEY,
+						`Mocked service supports only one configuration key: '${PromptFilesConfig.CONFIG_KEY}'.`,
+					);
+
+					return value;
+				};
+			},
+		});
+
+	// note! it's ok to `as IConfigurationService` here, because of the runtime checks in the Proxy getter
+	return service as Pick<IConfigurationService, 'getValue'> as IConfigurationService;
+};
+
+suite('PromptFilesConfig', () => {
+	ensureNoDisposablesAreLeakedInTestSuite();
+
+	suite('getValue', () => {
+		test('undefined', () => {
+			const configService = createMock(undefined);
+
+			assert.strictEqual(
+				PromptFilesConfig.getValue(configService),
+				undefined,
+				'Must read correct value.',
+			);
+		});
+
+		test('null', () => {
+			const configService = createMock(null);
+
+			assert.strictEqual(
+				PromptFilesConfig.getValue(configService),
+				undefined,
+				'Must read correct value.',
+			);
+		});
+
+		suite('string', () => {
+			test('empty', () => {
+				assert.strictEqual(
+					PromptFilesConfig.getValue(createMock('')),
+					undefined,
+					'Must read correct value.',
+				);
+
+				assert.strictEqual(
+					PromptFilesConfig.getValue(createMock('  ')),
+					undefined,
+					'Must read correct value.',
+				);
+
+				assert.strictEqual(
+					PromptFilesConfig.getValue(createMock('\t')),
+					undefined,
+					'Must read correct value.',
+				);
+
+				assert.strictEqual(
+					PromptFilesConfig.getValue(createMock('\v')),
+					undefined,
+					'Must read correct value.',
+				);
+
+				assert.strictEqual(
+					PromptFilesConfig.getValue(createMock('\f')),
+					undefined,
+					'Must read correct value.',
+				);
+
+				assert.strictEqual(
+					PromptFilesConfig.getValue(createMock('\n')),
+					undefined,
+					'Must read correct value.',
+				);
+
+				assert.strictEqual(
+					PromptFilesConfig.getValue(createMock('\r\n')),
+					undefined,
+					'Must read correct value.',
+				);
+			});
+
+			test('true', () => {
+				assert.strictEqual(
+					PromptFilesConfig.getValue(createMock('true')),
+					true,
+					'Must read correct value.',
+				);
+
+				assert.strictEqual(
+					PromptFilesConfig.getValue(createMock('TRUE')),
+					true,
+					'Must read correct value.',
+				);
+
+				assert.strictEqual(
+					PromptFilesConfig.getValue(createMock('TrUe')),
+					true,
+					'Must read correct value.',
+				);
+			});
+
+			test('false', () => {
+				assert.strictEqual(
+					PromptFilesConfig.getValue(createMock('false')),
+					false,
+					'Must read correct value.',
+				);
+
+				assert.strictEqual(
+					PromptFilesConfig.getValue(createMock('FALSE')),
+					false,
+					'Must read correct value.',
+				);
+
+				assert.strictEqual(
+					PromptFilesConfig.getValue(createMock('fAlSe')),
+					false,
+					'Must read correct value.',
+				);
+			});
+
+			test('non-empty', () => {
+				assert.strictEqual(
+					PromptFilesConfig.getValue(createMock('/absolute/path/to/folder')),
+					'/absolute/path/to/folder',
+					'Must read correct value.',
+				);
+			});
+		});
+	});
+});