Add tests for gr-checkers-list

* Add test to see if the checkers list table headers are
  correctly rendered
* Add test to see if the correct number of checkers are
  returned
* Add test to see the rendered data matches the response

Change-Id: Ib6c9b209058c6ab0d194ab192ba3c5bd34425255
diff --git a/gr-checks/gr-checkers-list_test.html b/gr-checks/gr-checkers-list_test.html
new file mode 100644
index 0000000..6b5e0ad
--- /dev/null
+++ b/gr-checks/gr-checkers-list_test.html
@@ -0,0 +1,244 @@
+<!DOCTYPE html>
+<meta name="viewport" content="width=device-width, minimum-scale=1.0, initial-scale=1.0, user-scalable=yes">
+<script src="/bower_components/webcomponentsjs/webcomponents-lite.min.js"></script>
+<script src="/bower_components/web-component-tester/browser.js"></script>
+
+<link rel="import" href="/bower_components/polymer/polymer.html">
+
+<title>gr-checkers-list-view</title>
+<link rel="import" href="gr-checkers-list.html">
+
+<test-fixture id="basic">
+  <template is="dom-template">
+    <gr-checkers-list
+      plugin-rest-api="[[pluginRestApi]]"
+    >
+    </gr-checkers-list>
+</template>
+</test-fixture>
+
+<script>
+  const CHECKERS = [
+    {
+        "uuid":"C:D",
+        "name":"A",
+        "description":"B",
+        "repository":"Backend",
+        "status":"ENABLED",
+        "blocking":[
+
+        ],
+        "query":"status:open",
+        "created":"2019-07-25 13:08:43.000000000",
+        "updated":"2019-07-25 13:08:43.000000000"
+    },
+    {
+        "uuid":"aa:bb",
+        "name":"n1",
+        "description":"d1",
+        "repository":"All-Users",
+        "status":"ENABLED",
+        "blocking":[
+
+        ],
+        "query":"status:open",
+        "created":"2019-07-29 13:07:17.000000000",
+        "updated":"2019-07-29 13:07:17.000000000"
+    },
+    {
+        "uuid":"adsf:asdasdas",
+        "name":"ds",
+        "description":"s",
+        "repository":"Scripts",
+        "status":"ENABLED",
+        "blocking":[
+
+        ],
+        "query":"status:open",
+        "created":"2019-07-29 13:28:09.000000000",
+        "updated":"2019-07-29 13:28:09.000000000"
+    },
+    {
+        "uuid":"ijkl:mnop",
+        "name":"abcd",
+        "description":"efgh",
+        "repository":"All-Projects",
+        "status":"ENABLED",
+        "blocking":[
+
+        ],
+        "query":"status:open",
+        "created":"2019-07-29 09:33:25.000000000",
+        "updated":"2019-07-29 09:33:25.000000000"
+    },
+    {
+        "uuid":"ngfnf:mhghgnhghn",
+        "name":"nbvfg",
+        "description":"fjhgj",
+        "repository":"All-Users",
+        "status":"ENABLED",
+        "blocking":[
+
+        ],
+        "query":"status:open",
+        "created":"2019-08-06 14:21:34.000000000",
+        "updated":"2019-08-06 14:21:34.000000000"
+    },
+    {
+        "uuid":"sdfsdf--:sdfsdf333",
+        "name":"sdfsdf",
+        "description":"sdfsdfsd",
+        "repository":"Scripts",
+        "status":"ENABLED",
+        "blocking":[
+
+        ],
+        "query":"status:open",
+        "created":"2019-07-30 13:00:19.000000000",
+        "updated":"2019-07-30 13:00:19.000000000"
+    },
+    {  
+        "uuid":"test:checker1",
+        "name":"Unit Tests",
+        "description":"Random description that should be improved at some point",
+        "repository":"Backend",
+        "status":"ENABLED",
+        "blocking":[
+
+        ],
+        "query":"status:open",
+        "created":"2019-07-22 13:16:52.000000000",
+        "updated":"2019-07-22 14:21:14.000000000"
+    },
+    {
+        "uuid":"test:checker2",
+        "name":"Code Style",
+        "repository":"Backend",
+        "status":"ENABLED",
+        "blocking":[
+
+        ],
+        "query":"status:open",
+        "created":"2019-07-22 13:26:56.000000000",
+        "updated":"2019-07-22 13:26:56.000000000"
+    },
+    {
+        "uuid":"xddf:sdfsdfsdf",
+        "name":"sdfsdf",
+        "description":"sdfsdf",
+        "repository":"Scripts",
+        "status":"ENABLED",
+        "blocking":[
+
+        ],
+        "query":"status:open",
+        "created":"2019-07-29 14:11:59.000000000",
+        "updated":"2019-07-29 14:11:59.000000000"
+    },
+    {
+        "uuid":"zxczxc:bnvnbvnbvn",
+        "name":"zxc",
+        "description":"zxc",
+        "repository":"Scripts",
+        "status":"ENABLED",
+        "blocking":[
+
+        ],
+        "query":"status:open",
+        "created":"2019-07-29 14:00:24.000000000",
+        "updated":"2019-07-29 14:00:24.000000000"
+    },
+    {
+        "uuid":"zxczxc:sdfsdf",
+        "name":"zxc",
+        "description":"zxc",
+        "repository":"Scripts",
+        "status":"ENABLED",
+        "blocking":[
+
+        ],
+        "query":"status:open",
+        "created":"2019-07-29 13:30:47.000000000",
+        "updated":"2019-07-29 13:30:47.000000000"
+    }
+  ];
+</script>
+
+<script>
+
+  suite('gr-checkers-list tests', () => {
+    let element;
+    let sandbox;
+    let fetchJSONSpy, fetchJSONPromise, fetchJSONResolve;
+
+    setup((done) => {
+      sandbox = sinon.sandbox.create();
+
+      fetchJSONSpy = sinon.stub();
+      const fetchJSONPromise = new Promise((resolve, reject) => {
+      fetchJSONResolve = resolve;
+      })
+      fetchJSONSpy.returns(fetchJSONPromise)
+
+      const pluginRestApi = {
+        fetchJSON: fetchJSONSpy,
+      };
+
+      element = fixture('basic', {
+        pluginRestApi
+      });
+      flush(done);
+    });
+
+    teardown(() => { sandbox.restore(); });
+
+    test('renders checker list table headings', () => {
+      const checkersList = element.$$('table')
+      const headings = checkersList.firstElementChild.firstElementChild.
+                        children;
+      const expectedHeadings = ["Checker Name", "Repository", "Status",
+        "Required", "Checker Description", "Edit"];
+      for (let i = 0;i < headings.length;i++) {
+        assert(headings[i].innerText === expectedHeadings[i]);
+      }
+    });
+
+    test('create checker button renders', () => {
+      assert(element.querySelector('#createNewContainer'));
+      const button = element.querySelector('#createNewContainer')
+                            .querySelector('gr-button');
+      assert(button);
+      assert(button.innerText === 'Create New');
+    });
+
+    suite('with checkers', () => {
+      setup((done) => {
+        fetchJSONResolve(CHECKERS);
+        flush(done);
+      })
+      test('renders correct number of checkers', () => {
+        const checkers = element.$$('table > tbody:nth-child(2)')
+                                .querySelectorAll('tr');
+        assert(checkers.length === CHECKERS.length);
+      })
+      test('renders correct checkers', () => {
+        const checkers = element.$$('table > tbody:nth-child(2)')
+                                .querySelectorAll('tr');
+        for (let i = 0;i < checkers.length;i++) {
+          const checkerDetails = checkers[i].querySelectorAll('td');
+          assert(CHECKERS[i].name === checkerDetails[0].innerText);
+          assert(CHECKERS[i].repository === checkerDetails[1].innerText);
+          const status = CHECKERS[i].status || "NO";
+          assert(status === checkerDetails[2].innerText);
+          const checkerRequired = (CHECKERS[i].blocking && 
+                                   CHECKERS[i].blocking.length > 0)
+                                   ? "YES": "NO";
+          assert(checkerRequired === checkerDetails[3].innerText);
+          const description = CHECKERS[i].description || '';
+          assert(description === checkerDetails[4].innerText);
+        }
+      })
+    });
+
+  });
+</script>