Avoid array indices to fixtures in JS specs

spec/javascripts/commit/pipelines/pipelines_spec.js

@@ -10,9 +10,10 @@ describe('Pipelines table in Commits and Merge requests', () => {
   preloadFixtures(jsonFixtureName);
 
   beforeEach(() => {
+    const pipelines = getJSONFixture(jsonFixtureName).pipelines;
+
     PipelinesTable = Vue.extend(pipelinesTable);
-    const pipelines = getJSONFixture(jsonFixtureName).pipelines; // sorted by id, descending
-    pipeline = pipelines[2];
+    pipeline = pipelines.find(p => p.user !== null && p.commit !== null);
   });
 
   describe('successful request', () => {

spec/javascripts/pipelines/pipelines_table_row_spec.js

@@ -23,10 +23,11 @@ describe('Pipelines Table Row', () => {
   preloadFixtures(jsonFixtureName);
 
   beforeEach(() => {
-    const pipelines = getJSONFixture(jsonFixtureName).pipelines; // sorted by id, descending
-    pipeline = pipelines[2];
-    pipelineWithoutAuthor = pipelines[1];
-    pipelineWithoutCommit = pipelines[0];
+    const pipelines = getJSONFixture(jsonFixtureName).pipelines;
+
+    pipeline = pipelines.find(p => p.user !== null && p.commit !== null);
+    pipelineWithoutAuthor = pipelines.find(p => p.user == null && p.commit !== null);
+    pipelineWithoutCommit = pipelines.find(p => p.user == null && p.commit == null);
   });
 
   afterEach(() => {

spec/javascripts/pipelines/pipelines_table_spec.js

@@ -11,9 +11,10 @@ describe('Pipelines Table', () => {
   preloadFixtures(jsonFixtureName);
 
   beforeEach(() => {
+    const pipelines = getJSONFixture(jsonFixtureName).pipelines;
+
     PipelinesTableComponent = Vue.extend(pipelinesTableComp);
-    const pipelines = getJSONFixture(jsonFixtureName).pipelines; // ordered by id, descending
-    pipeline = pipelines[2];
+    pipeline = pipelines.find(p => p.user !== null && p.commit !== null);
   });
 
   describe('table', () => {