[enzyme-adapter-utils] [new] add fakeDynamicImport

enzymejs · Jan 9, 2019 · 4d2bad1 · 4d2bad1
1 parent 3769e8b
commit 4d2bad1
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diff --git a/packages/enzyme-adapter-utils/src/Utils.js b/packages/enzyme-adapter-utils/src/Utils.js
@@ -363,3 +363,7 @@ export function getWrappingComponentMountRenderer({ toTree, getMountWrapperInsta
     },
   };
 }
+
+export function fakeDynamicImport(moduleToImport) {
+  return Promise.resolve({ default: moduleToImport });
+}
diff --git a/packages/enzyme-test-suite/test/adapter-utils-spec.jsx b/packages/enzyme-test-suite/test/adapter-utils-spec.jsx
@@ -12,6 +12,7 @@ import {
   getNodeFromRootFinder,
   wrapWithWrappingComponent,
   getWrappingComponentMountRenderer,
+  fakeDynamicImport,
 } from 'enzyme-adapter-utils';
 
 import './_helpers/setupAdapters';
@@ -378,4 +379,22 @@ describe('enzyme-adapter-utils', () => {
       });
     });
   });
+
+  describe('fakeDynamicImport', () => {
+    it('is a function', () => {
+      expect(fakeDynamicImport).to.be.a('function');
+    });
+
+    it('returns a promise', () => {
+      const promise = fakeDynamicImport();
+      expect(Promise.resolve(promise)).to.equal(promise);
+    });
+
+    it('returns a promise for an object containing the provided argument', () => {
+      const signal = {};
+      return fakeDynamicImport(signal).then((actual) => {
+        expect(actual).to.have.property('default', signal);
+      });
+    });
+  });
 });