Test coverage for the messageFromAdapterError util

ui/tests/unit/utils/message-from-adapter-error-test.js

@@ -0,0 +1,44 @@
+import { module, test } from 'qunit';
+import { ServerError, ForbiddenError } from '@ember-data/adapter/error';
+import messageFromAdapterError from 'nomad-ui/utils/message-from-adapter-error';
+
+const testCases = [
+  {
+    name: 'Forbidden Error',
+    in: [new ForbiddenError([], "Can't do that"), 'run tests'],
+    out: 'Your ACL token does not grant permission to run tests.',
+  },
+  {
+    name: 'Generic Error',
+    in: [new ServerError([{ detail: 'DB Max Connections' }], 'Server Error'), 'run tests'],
+    out: 'DB Max Connections',
+  },
+  {
+    name: 'Multiple Errors',
+    in: [
+      new ServerError(
+        [{ detail: 'DB Max Connections' }, { detail: 'Service timeout' }],
+        'Server Error'
+      ),
+      'run tests',
+    ],
+    out: 'DB Max Connections\n\nService timeout',
+  },
+  {
+    name: 'Malformed Error (not from Ember Data which should always have an errors list)',
+    in: [new Error('Go boom'), 'handle custom error messages'],
+    out: 'Unknown Error',
+  },
+];
+
+module('Unit | Util | messageFromAdapterError', function() {
+  testCases.forEach(testCase => {
+    test(testCase.name, function(assert) {
+      assert.equal(
+        messageFromAdapterError.apply(null, testCase.in),
+        testCase.out,
+        `[${testCase.in.join(', ')}] => ${testCase.out}`
+      );
+    });
+  });
+});