diff --git a/packages/compiler-cli/ngcc/test/dependencies/dependency_resolver_spec.ts b/packages/compiler-cli/ngcc/test/dependencies/dependency_resolver_spec.ts
index 89538b7169..1faf99947d 100644
--- a/packages/compiler-cli/ngcc/test/dependencies/dependency_resolver_spec.ts
+++ b/packages/compiler-cli/ngcc/test/dependencies/dependency_resolver_spec.ts
@@ -120,7 +120,7 @@ describe('DependencyResolver', () => {
       resolver = new DependencyResolver(new MockLogger(), {esm2015: host});
       expect(() => resolver.sortEntryPointsByDependency([first]))
           .toThrowError(
-              `Could not find a suitable format for computing dependencies of entry-point: '/first'.`);
+              `Could not find a suitable format for computing dependencies of entry-point: '${first.path}'.`);
     });
 
     it('should capture any dependencies that were ignored', () => {
@@ -159,17 +159,17 @@ describe('DependencyResolver', () => {
       const result = resolver.sortEntryPointsByDependency([fifth, first, fourth, second, third]);
       expect(result.entryPoints).toEqual([fifth, fourth, third, second, first]);
 
-      expect(esm5Host.findDependencies).toHaveBeenCalledWith('/first/index.js');
-      expect(esm5Host.findDependencies).not.toHaveBeenCalledWith('/second/sub/index.js');
-      expect(esm5Host.findDependencies).toHaveBeenCalledWith('/third/index.js');
-      expect(esm5Host.findDependencies).not.toHaveBeenCalledWith('/fourth/sub2/index.js');
-      expect(esm5Host.findDependencies).toHaveBeenCalledWith('/fifth/index.js');
+      expect(esm5Host.findDependencies).toHaveBeenCalledWith(`${first.path}/index.js`);
+      expect(esm5Host.findDependencies).not.toHaveBeenCalledWith(`${second.path}/sub/index.js`);
+      expect(esm5Host.findDependencies).toHaveBeenCalledWith(`${third.path}/index.js`);
+      expect(esm5Host.findDependencies).not.toHaveBeenCalledWith(`${fourth.path}/sub2/index.js`);
+      expect(esm5Host.findDependencies).toHaveBeenCalledWith(`${fifth.path}/index.js`);
 
-      expect(esm2015Host.findDependencies).not.toHaveBeenCalledWith('/first/index.js');
-      expect(esm2015Host.findDependencies).toHaveBeenCalledWith('/second/sub/index.js');
-      expect(esm2015Host.findDependencies).not.toHaveBeenCalledWith('/third/index.js');
-      expect(esm2015Host.findDependencies).toHaveBeenCalledWith('/fourth/sub2/index.js');
-      expect(esm2015Host.findDependencies).not.toHaveBeenCalledWith('/fifth/index.js');
+      expect(esm2015Host.findDependencies).not.toHaveBeenCalledWith(`${first.path}/index.js`);
+      expect(esm2015Host.findDependencies).toHaveBeenCalledWith(`${second.path}/sub/index.js`);
+      expect(esm2015Host.findDependencies).not.toHaveBeenCalledWith(`${third.path}/index.js`);
+      expect(esm2015Host.findDependencies).toHaveBeenCalledWith(`${fourth.path}/sub2/index.js`);
+      expect(esm2015Host.findDependencies).not.toHaveBeenCalledWith(`${fifth.path}/index.js`);
     });
 
     interface DepMap {
diff --git a/packages/compiler-cli/ngcc/test/dependencies/umd_dependency_host_spec.ts b/packages/compiler-cli/ngcc/test/dependencies/umd_dependency_host_spec.ts
index 5423506e20..5f348c4566 100644
--- a/packages/compiler-cli/ngcc/test/dependencies/umd_dependency_host_spec.ts
+++ b/packages/compiler-cli/ngcc/test/dependencies/umd_dependency_host_spec.ts
@@ -69,7 +69,7 @@ describe('UmdDependencyHost', () => {
       expect(dependencies.size).toBe(0);
       expect(missing.size).toBe(0);
       expect(deepImports.size).toBe(1);
-      expect(deepImports.has('/node_modules/lib_1/deep/import')).toBe(true);
+      expect(deepImports.has(_('/node_modules/lib_1/deep/import'))).toBe(true);
     });
 
     it('should recurse into internal dependencies', () => {