SSE Session and examples

test/misc.test.ts

@@ -0,0 +1,59 @@
+import { expect, test } from 'vitest';
+import { normalizeError } from '../source/misc.ts';
+
+/** Test cases for the normalizeError function. */
+const normalizeErrorTestCases = [
+    {
+        input: new Error('test error'),
+        expected: new Error('test error'),
+    },
+    {
+        input: 'test error',
+        expected: new Error('test error'),
+    },
+    {
+        input: 1,
+        expected: new Error('1'),
+    },
+    {
+        input: undefined,
+        expected: new Error('undefined'),
+    },
+    {
+        input: null,
+        expected: new Error('null'),
+    },
+    {
+        input: false,
+        expected: new Error('false'),
+    },
+    {
+        input: true,
+        expected: new Error('true'),
+    },
+    {
+        input: {},
+        expected: new Error('[object Object]'),
+    },
+    {
+        input: [],
+        expected: new Error(),
+    },
+];
+
+/**
+ * Tests that normalizeError converts non-Error throws to Error instances.
+ */
+const testNormalizeError = async (): Promise<void> => {
+    for (const testCase of normalizeErrorTestCases) {
+        const result = normalizeError(testCase.input);
+        expect(result).toBeInstanceOf(Error);
+        expect(result.message).toBe(testCase.expected.message);
+    }
+};
+
+const runTests = async (): Promise<void> => {
+    test('normalizeError: converts non-Error throws to Error instances', testNormalizeError);
+};
+
+await runTests();