Fix loading-icon specs.

spec/javascripts/pipelines/graph/graph_component_spec.js

 import Vue from 'vue';
 import graphComponent from '~/pipelines/components/graph/graph_component.vue';
 import graphJSON from './mock_data';
+import linkedPipelineJSON from './linked_pipelines_mock_data';
 
-describe('graph component', () => {
-  preloadFixtures('static/graph.html.raw');
+const GraphComponent = Vue.extend(graphComponent);
 
-  let GraphComponent;
+const state = {
+  graph: graphJSON.details.stages,
+  triggered: linkedPipelineJSON.triggered,
+  triggerer: linkedPipelineJSON.triggerer,
+};
 
-  beforeEach(() => {
-    loadFixtures('static/graph.html.raw');
-    GraphComponent = Vue.extend(graphComponent);
+describe('graph component', function () {
+  describe('while is loading', function () {
+    beforeEach(function () {
+      this.component = new GraphComponent({
+        propsData: { state },
+      }).$mount();
     });
 
-  describe('while is loading', () => {
-    it('should render a loading icon', () => {
-      const component = new GraphComponent({
-        propsData: {
-          isLoading: true,
-          pipeline: {},
-        },
-      }).$mount('#js-pipeline-graph-vue');
-      expect(component.$el.querySelector('.loading-icon')).toBeDefined();
+    it('should render a loading icon', function () {
+      expect(this.component.$el.querySelector('.loading-icon')).not.toBeNull();
     });
   });
 
-  describe('with data', () => {
-    it('should render the graph', () => {
-      const component = new GraphComponent({
-        propsData: {
-          isLoading: false,
-          pipeline: graphJSON,
-        },
-      }).$mount('#js-pipeline-graph-vue');
+  describe('when linked pipelines are present', function () {
+    beforeEach(function () {
+      this.component = new GraphComponent({
+        propsData: { state },
+      }).$mount();
+    });
+
+    describe('rendered output', function () {
+      it('should include the pipelines graph', function () {
+        expect(this.component.$el.classList.contains('js-pipeline-graph')).toEqual(true);
+      });
+
+      it('should include the first column with left margin', function () {
+        const firstColumn = this.component.$el.querySelector('.stage-column:first-child');
+        expect(firstColumn.classList.contains('left-margin')).toEqual(true);
+      });
+
+      it('should include the second column with a left margin', function () {
+        const secondColumn = this.component.$el.querySelector('.stage-column:nth-child(2)');
+        expect(secondColumn.classList.contains('left-margin')).toEqual(true);
+      });
+
+      it('should include the second column first build with a left connector', function () {
+        const firstBuild = this.component.$el.querySelector('.stage-column:nth-child(2) .build:nth-child(1)');
+        expect(firstBuild.classList.contains('left-connector')).toEqual(true);
+      });
+
+      it('should not include the loading icon', function () {
+        expect(this.component.$el.querySelector('.loading-icon')).toBe(null);
+      });
+
+      it('should include the stage column list', function () {
+        expect(this.component.$el.querySelector('.stage-column-list')).toBeDefined();
+      });
+
+      it('should include the has-linked-pipelines flag', function () {
+        expect(this.component.$el.querySelector('.has-linked-pipelines')).toBeDefined();
+      });
+    });
+
+    describe('computeds and methods', function () {
+      it('linkedPipelinesClass should return "has-linked-pipelines"', function () {
+        expect(this.component.linkedPipelinesClass).toBe('has-linked-pipelines');
+      });
+
+      describe('capitalizeStageName', function () {
+        it('it capitalizes the stage name', function () {
+          expect(this.component.capitalizeStageName('mystage')).toBe('Mystage');
+        });
+      });
+
+      describe('stageConnectorClass', function () {
+        it('it returns left-margin when there is a triggerer', function () {
+          expect(this.component.stageConnectorClass(0, { groups: ['job'] })).toBe('left-margin');
+        });
+      });
+
+      describe('linkedPipelineClass', function () {
+        it('it returns has-upstream when triggerer and first stage', function () {
+          expect(this.component.linkedPipelineClass(0)).toBe('has-upstream');
+        });
+
+        it('it returns has-downstream when triggered and is last stage', function () {
+          expect(this.component.linkedPipelineClass(1)).toBe('has-downstream');
+        });
+      });
+    });
+
+    describe('linked pipelines components', function () {
+      it('should render an upstream pipelines column', function () {
+        expect(this.component.$el.querySelector('.linked-pipelines-column')).not.toBeNull();
+        expect(this.component.$el.innerHTML).toContain('Upstream');
+      });
+
+      it('should render a downstream pipelines column', function () {
+        expect(this.component.$el.querySelector('.linked-pipelines-column')).not.toBeNull();
+        expect(this.component.$el.innerHTML).toContain('Downstream');
+      });
+    });
+  });
 
-      expect(component.$el.classList.contains('js-pipeline-graph')).toEqual(true);
+  describe('when linked pipelines are not present', function () {
+    beforeEach(function () {
+      this.component = new GraphComponent({
+        propsData: { state: Object.assign(state, { triggered: [], triggerer: [] }) },
+      }).$mount();
+    });
 
-      expect(
-        component.$el.querySelector('.stage-column:first-child').classList.contains('no-margin'),
-      ).toEqual(true);
+    describe('rendered output', function () {
+      it('should include the first column with a no margin', function () {
+        const firstColumn = this.component.$el.querySelector('.stage-column:first-child');
+        expect(firstColumn.classList.contains('no-margin')).toEqual(true);
+      });
 
-      expect(
-        component.$el.querySelector('.stage-column:nth-child(2)').classList.contains('left-margin'),
-      ).toEqual(true);
+      it('should not render a linked pipelines column', function () {
+        expect(this.component.$el.querySelector('.linked-pipelines-column')).toBeNull();
+      });
+    });
 
-      expect(
-        component.$el.querySelector('.stage-column:nth-child(2) .build:nth-child(1)').classList.contains('left-connector'),
-      ).toEqual(true);
+    describe('stageConnectorClass', function () {
+      it('it returns left-margin when no triggerer and there is one job', function () {
+        expect(this.component.stageConnectorClass(0, { groups: ['job'] })).toBe('no-margin');
+      });
 
-      expect(component.$el.querySelector('loading-icon')).toBe(null);
+      it('it returns left-margin when no triggerer and not the first stage', function () {
+        expect(this.component.stageConnectorClass(99, { groups: ['job'] })).toBe('left-margin');
+      });
+    });
 
-      expect(component.$el.querySelector('.stage-column-list')).toBeDefined();
+    describe('linkedPipelineClass', function () {
+      it('it returns empty string when no triggerer', function () {
+        expect(this.component.linkedPipelineClass(1)).toBe('');
+      });
     });
   });
 });