Add node tests

test/node/ol/AssertionError.test.js

@@ -0,0 +1,36 @@
+import AssertionError from '../../../src/ol/AssertionError.js';
+import expect from '../expect.js';
+import {VERSION} from '../../../src/ol/util.js';
+
+describe('ol/AssertionError.js', function () {
+  it('generates an error', function () {
+    const error = new AssertionError(42);
+    expect(error).to.be.an(Error);
+  });
+
+  it('generates a message with a versioned url', function () {
+    const error = new AssertionError(42);
+    const path = VERSION ? VERSION.split('-')[0] : 'latest';
+    expect(error.message).to.be(
+      'Assertion failed. See https://openlayers.org/en/' +
+        path +
+        '/doc/errors/#42 for details.'
+    );
+  });
+
+  it('has an error code', function () {
+    const error = new AssertionError(42);
+    expect(error.code).to.be(42);
+  });
+
+  it('has a name', function () {
+    const error = new AssertionError(42);
+    expect(error.name).to.be('AssertionError');
+  });
+
+  it('is instanceof Error and AssertionError', function () {
+    const error = new AssertionError(42);
+    expect(error instanceof Error).to.be(true);
+    expect(error instanceof AssertionError).to.be(true);
+  });
+});