Unit tests

lib/packagers/yarn.test.js

@@ -53,6 +53,36 @@ describe('yarn', () => {
     expect(yarnModule.mustCopyModules).to.be.false;
   });
 
+  describe('getProdDependencies', () => {
+    it('should use yarn list', () => {
+      childProcessMock.exec.yields(null, '{}', '');
+      return expect(yarnModule.getProdDependencies('myPath', 1, 2000)).to.be.fulfilled
+      .then(result => {
+        expect(result).to.be.an('object');
+        expect(childProcessMock.exec).to.have.been.calledOnce;
+        expect(childProcessMock.exec).to.have.been.calledWithExactly(
+          'yarn list --depth=1 --json --production',
+          {
+            cwd: 'myPath',
+            encoding: 'utf8',
+            maxBuffer: 2000
+          },
+          sinon.match.any
+        );
+        return null;
+      });
+    });
+  });
+
+  describe('rebaseLockfile', () => {
+    it('should return the original lockfile', () => {
+      const testContent = 'eugfogfoigqwoeifgoqwhhacvaisvciuviwefvc';
+      const testContent2 = 'eugfogfoigqwoeifgoqwhhacvaisvciuviwefvc';
+      yarnModule.rebaseLockfile('.', testContent);
+      expect(testContent).to.equal(testContent2);
+    });
+  });
+
   describe('install', () => {
     it('should use yarn install', () => {
       childProcessMock.exec.yields(null, 'installed successfully', '');