Fix .contains() deprecation warnings

Author: marinaaisa

tests/unit/components/ContentNode.spec.js

@@ -1813,10 +1813,10 @@ describe('ContentNode', () => {
       expect(definitions.length).toBe(2);
 
       expect(terms.at(0).text()).toBe('Foo');
-      expect(definitions.at(0).contains('p')).toBe(true);
+      expect(definitions.at(0).find('p').exists()).toBe(true);
       expect(definitions.at(0).text()).toBe('foo');
       expect(terms.at(1).text()).toBe('Bar');
-      expect(definitions.at(1).contains('p')).toBe(true);
+      expect(definitions.at(1).find('p').exists()).toBe(true);
       expect(definitions.at(1).text()).toBe('bar');
     });
   });

tests/unit/components/ContentNode/CollapsibleCodeListing.spec.js

@@ -71,20 +71,20 @@ describe('CollapsibleCodeListing', () => {
     expect(containers.at(0).find('.code-line-container').exists()).toBe(true);
     expect(containers.at(0).classes('collapsible')).toBe(false);
     expect(containers.at(0).classes('collapsed')).toBe(false);
-    expect(containers.at(0).contains('.code-number')).toBe(true);
-    expect(containers.at(0).contains('.code-line')).toBe(true);
+    expect(containers.at(0).find('.code-number').exists()).toBe(true);
+    expect(containers.at(0).find('.code-line').exists()).toBe(true);
 
     expect(containers.at(1).find('.code-line-container').exists()).toBe(true);
     expect(containers.at(1).classes('collapsible')).toBe(true);
     expect(containers.at(1).classes('collapsed')).toBe(false);
-    expect(containers.at(1).contains('.code-number')).toBe(true);
-    expect(containers.at(1).contains('.code-line')).toBe(true);
+    expect(containers.at(1).find('.code-number').exists()).toBe(true);
+    expect(containers.at(1).find('.code-line').exists()).toBe(true);
 
     expect(containers.at(2).find('.code-line-container').exists()).toBe(true);
     expect(containers.at(2).classes('collapsible')).toBe(false);
     expect(containers.at(2).classes('collapsed')).toBe(false);
-    expect(containers.at(2).contains('.code-number')).toBe(true);
-    expect(containers.at(2).contains('.code-line')).toBe(true);
+    expect(containers.at(2).find('.code-number').exists()).toBe(true);
+    expect(containers.at(2).find('.code-line').exists()).toBe(true);
   });
 
   it('adds collapsed class to all collapsible containers when collapsed', async () => {

tests/unit/components/DocumentationTopic/PrimaryContent/RenderChanged.spec.js

@@ -102,7 +102,7 @@ describe('RenderChanged', () => {
         },
       });
       expect(wrapper.text()).toBe('foo true');
-      expect(wrapper.contains(ChangedClasses.added));
+      expect(wrapper.find(ChangedClasses.added).exists());
     });
 
     it('renders the `new` val slot, if `new:false` and `previous:true` when `renderSingleChange:true`', () => {
@@ -118,7 +118,7 @@ describe('RenderChanged', () => {
         },
       });
       expect(wrapper.text()).toBe('foo true');
-      expect(wrapper.contains(ChangedClasses.removed));
+      expect(wrapper.find(ChangedClasses.removed).exists());
     });
   });
 

tests/unit/components/GridColumn.spec.js

@@ -13,7 +13,7 @@ import GridColumn from 'docc-render/components/GridColumn.vue';
 
 describe('GridColumn', () => {
   it('renders a div.col', () => {
-    expect(shallowMount(GridColumn).contains('div.col')).toBe(true);
+    expect(shallowMount(GridColumn).find('div.col').exists()).toBe(true);
   });
 
   it('renders slot content', () => {

tests/unit/components/GridRow.spec.js

@@ -13,7 +13,7 @@ import GridRow from 'docc-render/components/GridRow.vue';
 
 describe('GridRow', () => {
   it('renders a div.row', () => {
-    expect(shallowMount(GridRow).contains('div.row')).toBe(true);
+    expect(shallowMount(GridRow).find('div.row').exists()).toBe(true);
   });
 
   it('renders slot content', () => {