Project import generated by Copybara.

GitOrigin-RevId: d9e9e3fb4e31372ec1fb43b178994ca78fa8fe70
diff --git a/static_src/elements/issue-detail/metadata/mr-edit-field/mr-edit-status.test.js b/static_src/elements/issue-detail/metadata/mr-edit-field/mr-edit-status.test.js
new file mode 100644
index 0000000..ffa25e5
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+++ b/static_src/elements/issue-detail/metadata/mr-edit-field/mr-edit-status.test.js
@@ -0,0 +1,83 @@
+// Copyright 2019 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+import {assert} from 'chai';
+import {MrEditStatus} from './mr-edit-status.js';
+
+
+let element;
+
+describe('mr-edit-status', () => {
+  beforeEach(() => {
+    element = document.createElement('mr-edit-status');
+    element.statuses = [
+      {'status': 'New'},
+      {'status': 'Old'},
+      {'status': 'Duplicate'},
+    ];
+    document.body.appendChild(element);
+  });
+
+  afterEach(() => {
+    document.body.removeChild(element);
+  });
+
+  it('initializes', () => {
+    assert.instanceOf(element, MrEditStatus);
+  });
+
+  it('delta empty when no changes', () => {
+    assert.deepEqual(element.delta, {});
+  });
+
+  it('change status', async () => {
+    element.initialStatus = 'New';
+
+    await element.updateComplete;
+
+    const statusInput = element.shadowRoot.querySelector('select');
+    statusInput.value = 'Old';
+    statusInput.dispatchEvent(new Event('change'));
+
+    await element.updateComplete;
+
+    assert.deepEqual(element.delta, {status: 'Old'});
+  });
+
+  it('mark as duplicate', async () => {
+    element.initialStatus = 'New';
+
+    await element.updateComplete;
+
+    const statusInput = element.shadowRoot.querySelector('select');
+    statusInput.value = 'Duplicate';
+    statusInput.dispatchEvent(new Event('change'));
+
+    await element.updateComplete;
+
+    element.shadowRoot.querySelector('#mergedIntoInput').value = 'proj:123';
+    assert.deepEqual(element.delta, {
+      status: 'Duplicate',
+      mergedInto: 'proj:123',
+    });
+  });
+
+  it('remove mark as duplicate', async () => {
+    element.initialStatus = 'Duplicate';
+    element.mergedInto = 'chromium:1234';
+
+    await element.updateComplete;
+
+    const statusInput = element.shadowRoot.querySelector('select');
+    statusInput.value = 'New';
+    statusInput.dispatchEvent(new Event('change'));
+
+    await element.updateComplete;
+
+    assert.deepEqual(element.delta, {
+      status: 'New',
+      mergedInto: '',
+    });
+  });
+});