diff --git a/ui/tests/unit/adapters/deployment-test.js b/ui/tests/unit/adapters/deployment-test.js
new file mode 100644
index 000000000000..70ecbe986fed
--- /dev/null
+++ b/ui/tests/unit/adapters/deployment-test.js
@@ -0,0 +1,68 @@
+import { module, test } from 'qunit';
+import { setupTest } from 'ember-qunit';
+import { startMirage } from 'nomad-ui/initializers/ember-cli-mirage';
+
+module('Unit | Adapter | Deployment', function(hooks) {
+  setupTest(hooks);
+
+  hooks.beforeEach(async function() {
+    this.store = this.owner.lookup('service:store');
+    this.system = this.owner.lookup('service:system');
+    this.subject = () => this.store.adapterFor('deployment');
+
+    window.localStorage.clear();
+
+    this.server = startMirage();
+
+    this.initialize = async ({ region } = {}) => {
+      if (region) window.localStorage.nomadActiveRegion = region;
+
+      this.server.create('region', { id: 'region-1' });
+      this.server.create('region', { id: 'region-2' });
+
+      this.server.create('node');
+      const job = this.server.create('job', { createAllocations: false });
+      const deploymentRecord = server.schema.deployments.where({ jobId: job.id }).models[0];
+
+      this.system.get('shouldIncludeRegion');
+      await this.system.get('defaultRegion');
+
+      const deployment = await this.store.findRecord('deployment', deploymentRecord.id);
+      this.server.pretender.handledRequests.length = 0;
+
+      return deployment;
+    };
+  });
+
+  hooks.afterEach(function() {
+    this.server.shutdown();
+  });
+
+  const testCases = [
+    {
+      variation: '',
+      region: null,
+      promote: id => `POST /v1/deployment/promote/${id}`,
+    },
+    {
+      variation: 'with non-default region',
+      region: 'region-2',
+      promote: id => `POST /v1/deployment/promote/${id}?region=region-2`,
+    },
+  ];
+
+  testCases.forEach(testCase => {
+    test(`promote makes the correct API call ${testCase.variation}`, async function(assert) {
+      const deployment = await this.initialize({ region: testCase.region });
+      await this.subject().promote(deployment);
+
+      const request = this.server.pretender.handledRequests[0];
+
+      assert.equal(`${request.method} ${request.url}`, testCase.promote(deployment.id));
+      assert.deepEqual(JSON.parse(request.requestBody), {
+        DeploymentId: deployment.id,
+        All: true,
+      });
+    });
+  });
+});