Rename src to source

test/utils/logger.test.ts

@@ -0,0 +1,53 @@
+import { Logger } from '../../source/utils/logger.ts';
+import { expect, describe, test } from 'vitest';
+
+/**
+ * Tests that a logger function is created and that it is a logger.
+ */
+const testLoggerCreatesLoggerFunction = (): void => {
+    const logger = new Logger('test');
+    expect(logger).toBeDefined();
+    expect(logger.namespace).toBe('test');
+
+    expect(Logger.isLogger(logger)).toBe(true);
+};
+
+/**
+ * Tests that a logger function is a logger.
+ */
+const testLoggerFunctionIsLogger = (): void => {
+    const logger = new Logger('test');
+    expect(Logger.isLogger(logger)).toBe(true);
+};
+
+/**
+ * Tests that a logger extends.
+ */
+const testLoggerExtends = (): void => {
+    const logger = new Logger('test');
+    const extendedLogger = logger.extend('extended');
+    expect(extendedLogger.namespace).toBe('test:extended');
+    expect(Logger.isLogger(extendedLogger)).toBe(true);
+};
+
+/**
+ * Tests that a logger is a logger.
+ */
+const testLoggerIsLogger = (): void => {
+    const logger = new Logger('test');
+    expect(Logger.isLogger(logger)).toBe(true);
+
+    // Test not a logger
+    const notALogger = [ 'not a logger', 123, true, false, null, undefined, NaN, Infinity, -Infinity ];
+
+    for (const item of notALogger) {
+        expect(Logger.isLogger(item)).toBe(false);
+    }
+};
+
+describe('Logger', () => {
+    test('creates a logger function', testLoggerCreatesLoggerFunction);
+    test('logger function is a logger', testLoggerFunctionIsLogger);
+    test('logger extends', testLoggerExtends);
+    test('logger is logger', testLoggerIsLogger);
+});