add tests

Author: lobsterkatie

packages/browser/test/unit/eventbuilder.test.ts

@@ -1,7 +1,7 @@
 import type { Client } from '@sentry/types';
 
 import { defaultStackParser } from '../../src';
-import { eventFromPlainObject } from '../../src/eventbuilder';
+import { eventFromPlainObject, exceptionFromError } from '../../src/eventbuilder';
 
 jest.mock('@sentry/core', () => {
   const original = jest.requireActual('@sentry/core');
@@ -62,3 +62,25 @@ describe('eventFromPlainObject', () => {
     });
   });
 });
+
+describe('exceptionFromError ', () => {
+  it('correctly reads error type and value from built-in `Error` subclass', () => {
+    const exceptionJSON = exceptionFromError(() => [], new TypeError("Expected type 'ChewToy', got type 'Shoe'"));
+
+    expect(exceptionJSON).toEqual({
+      type: 'TypeError',
+      value: "Expected type 'ChewToy', got type 'Shoe'",
+    });
+  });
+
+  it('correctly reads error type and value from user-defined `Error` subclass', () => {
+    class DidNotFetch extends Error {}
+
+    const exceptionJSON = exceptionFromError(() => [], new DidNotFetch("Failed to fetch requested object: 'ball'"));
+
+    expect(exceptionJSON).toEqual({
+      type: 'DidNotFetch',
+      value: "Failed to fetch requested object: 'ball'",
+    });
+  });
+});

packages/node/test/eventbuilders.test.ts

@@ -1,7 +1,7 @@
 import type { Client } from '@sentry/types';
 
 import { defaultStackParser, Scope } from '../src';
-import { eventFromUnknownInput } from '../src/eventbuilder';
+import { eventFromUnknownInput, exceptionFromError } from '../src/eventbuilder';
 
 const testScope = new Scope();
 
@@ -74,3 +74,25 @@ describe('eventFromUnknownInput', () => {
     });
   });
 });
+
+describe('exceptionFromError ', () => {
+  it('correctly reads error type and value from built-in `Error` subclass', () => {
+    const exceptionJSON = exceptionFromError(() => [], new TypeError("Expected type 'ChewToy', got type 'Shoe'"));
+
+    expect(exceptionJSON).toEqual({
+      type: 'TypeError',
+      value: "Expected type 'ChewToy', got type 'Shoe'",
+    });
+  });
+
+  it('correctly reads error type and value from user-defined `Error` subclass', () => {
+    class DidNotFetch extends Error {}
+
+    const exceptionJSON = exceptionFromError(() => [], new DidNotFetch("Failed to fetch requested object: 'ball'"));
+
+    expect(exceptionJSON).toEqual({
+      type: 'DidNotFetch',
+      value: "Failed to fetch requested object: 'ball'",
+    });
+  });
+});