Use it instead of test in Jest specs

To unify our codebase we decided to use `it`
in Jest specs instead of `test`. The ESLint rule is coming.

ee/spec/frontend/vulnerabilities/header_spec.js

@@ -298,7 +298,7 @@ describe('Vulnerability Header', () => {
   });
 
   describe('state badge', () => {
-    test.each(vulnerabilityStateEntries)(
+    it.each(vulnerabilityStateEntries)(
       'the vulnerability state badge has the correct style for the %s state',
       (state, stateObject) => {
         createWrapper({ state });

ee/spec/frontend/vulnerabilities/issue_link_spec.js

@@ -42,15 +42,15 @@ describe('IssueLink component', () => {
         wrapper = createWrapper({ propsData: { issue } });
       });
 
-      test('should contain the correct issue icon', () => {
+      it('should contain the correct issue icon', () => {
         expect(findIssueWithState(state)).toBeTruthy();
       });
 
-      test('should contain a link to the issue', () => {
+      it('should contain a link to the issue', () => {
         expect(findIssueLink(issue.iid).attributes('href')).toBe(issue.webUrl);
       });
 
-      test('should contain the title', () => {
+      it('should contain the title', () => {
         const tooltip = getBinding(findIssueLink(issue.iid).element, 'gl-tooltip');
         expect(tooltip).toBeDefined();
         expect(tooltip.value).toBe(issue.title);

ee/spec/frontend/vulnerabilities/vulnerability_state_dropdown_spec.js

@@ -37,7 +37,7 @@ describe('Vulnerability state dropdown component', () => {
   afterEach(() => wrapper.destroy());
 
   describe('tests that need to manually create the wrapper', () => {
-    test.each(vulnerabilityStateEntries)(
+    it.each(vulnerabilityStateEntries)(
       'dropdown is created with the %s state already selected',
       (stateString, stateObject) => {
         createWrapper(stateString);
@@ -51,7 +51,7 @@ describe('Vulnerability state dropdown component', () => {
       expect(isSelected(dropdownItems())).toBe(false);
     });
 
-    test.each(vulnerabilityStateEntries)(
+    it.each(vulnerabilityStateEntries)(
       `when the %s dropdown item is clicked, it's the only one that's selected`,
       (stateString, stateObject) => {
         // Start off with an unknown state so we can click through each item and see it change.

spec/frontend/design_management/utils/error_messages_spec.js

@@ -55,7 +55,7 @@ describe('Error message', () => {
       'Upload skipped. Some of the designs you tried uploading did not change: 1.jpg, 2.jpg, 3.jpg, 4.jpg, 5.jpg, and 2 more.',
     ],
   ])('designUploadSkippedWarning', (uploadedFiles, skippedFiles, expected) => {
-    test('returns expected warning message', () => {
+    it('returns expected warning message', () => {
       expect(designUploadSkippedWarning(uploadedFiles, skippedFiles)).toBe(expected);
     });
   });

spec/frontend/ide/lib/languages/vue_spec.js

@@ -9,7 +9,7 @@ describe('tokenization for .vue files', () => {
     registerLanguages(vue);
   });
 
-  test.each([
+  it.each([
     [
       '<div v-if="something">content</div>',
       [

spec/frontend/monitoring/components/dashboard_header_spec.js

@@ -436,7 +436,7 @@ describe('Dashboard header', () => {
         });
       });
 
-      test.each(systemDashboards)('is rendered for system dashboards', dashboardPath => {
+      it.each(systemDashboards)('is rendered for system dashboards', dashboardPath => {
         setupAllDashboards(store, dashboardPath);
 
         return wrapper.vm.$nextTick(() => {
@@ -444,7 +444,7 @@ describe('Dashboard header', () => {
         });
       });
 
-      test.each(nonSystemDashboards)('is not rendered for non-system dashboards', dashboardPath => {
+      it.each(nonSystemDashboards)('is not rendered for non-system dashboards', dashboardPath => {
         setupAllDashboards(store, dashboardPath);
 
         return wrapper.vm.$nextTick(() => {

spec/frontend/monitoring/components/group_empty_state_spec.js

@@ -24,7 +24,7 @@ describe('GroupEmptyState', () => {
     'FOO STATE', // does not fail with unknown states
   ];
 
-  test.each(supportedStates)('Renders an empty state for %s', selectedState => {
+  it.each(supportedStates)('Renders an empty state for %s', selectedState => {
     const wrapper = createComponent({ selectedState });
 
     expect(wrapper.element).toMatchSnapshot();