diff --git a/src/cdk/schematics/ng-update/test-cases/misc/method-call-checks.spec.ts b/src/cdk/schematics/ng-update/test-cases/misc/method-call-checks.spec.ts
index 37be49ece93..321acc289fb 100644
--- a/src/cdk/schematics/ng-update/test-cases/misc/method-call-checks.spec.ts
+++ b/src/cdk/schematics/ng-update/test-cases/misc/method-call-checks.spec.ts
@@ -4,7 +4,7 @@ import {runTestCases} from '../../../testing';
 describe('v6 method call checks', () => {
 
   it('should properly report invalid method calls', async () => {
-    const {logOutput} = await runTestCases('migration-v6', migrationCollection, {
+    const {logOutput, removeTempDir} = await runTestCases('migration-v6', migrationCollection, {
       'method-call-checks': require.resolve('./method-call-checks_input.ts')
     });
 
@@ -12,5 +12,7 @@ describe('v6 method call checks', () => {
       .toMatch(/\[15,.*Found call to "FocusMonitor\.monitor".*renderer.*has been removed/);
     expect(logOutput)
       .toMatch(/\[16,.*Found call to "FocusMonitor\.monitor".*renderer.*has been removed/);
+
+    removeTempDir();
   });
 });
diff --git a/src/cdk/schematics/ng-update/test-cases/v6-test-cases.spec.ts b/src/cdk/schematics/ng-update/test-cases/v6-test-cases.spec.ts
index 5d0a68be683..613ccfdc2ac 100644
--- a/src/cdk/schematics/ng-update/test-cases/v6-test-cases.spec.ts
+++ b/src/cdk/schematics/ng-update/test-cases/v6-test-cases.spec.ts
@@ -16,6 +16,7 @@ describe('v6 upgrade test cases', () => {
   ];
 
   let testCasesOutputPath: string;
+  let cleanupTestApp: () => void;
 
   beforeAll(async () => {
     const testCaseInputs = testCases.reduce((inputs, testCaseName) => {
@@ -23,11 +24,15 @@ describe('v6 upgrade test cases', () => {
       return inputs;
     }, {} as {[name: string]: string});
 
-    const {tempPath} = await runTestCases('migration-v6', migrationCollection, testCaseInputs);
+    const {tempPath, removeTempDir} =
+      await runTestCases('migration-v6', migrationCollection, testCaseInputs);
 
     testCasesOutputPath = join(tempPath, 'projects/cdk-testing/src/test-cases/');
+    cleanupTestApp = removeTempDir;
   });
 
+  afterAll(() => cleanupTestApp());
+
   // Iterates through every test case directory and generates a jasmine test block that will
   // verify that the update schematics properly updated the test input to the expected output.
   testCases.forEach(testCaseName => {
diff --git a/src/cdk/schematics/ng-update/test-cases/v7-test-cases.spec.ts b/src/cdk/schematics/ng-update/test-cases/v7-test-cases.spec.ts
index ab4d02b8dd5..0a01b3c48a2 100644
--- a/src/cdk/schematics/ng-update/test-cases/v7-test-cases.spec.ts
+++ b/src/cdk/schematics/ng-update/test-cases/v7-test-cases.spec.ts
@@ -13,6 +13,7 @@ describe('v7 upgrade test cases', () => {
   ];
 
   let testCasesOutputPath: string;
+  let cleanupTestApp: () => void;
 
   beforeAll(async () => {
     const testCaseInputs = testCases.reduce((inputs, testCaseName) => {
@@ -20,11 +21,15 @@ describe('v7 upgrade test cases', () => {
       return inputs;
     }, {} as {[name: string]: string});
 
-    const {tempPath} = await runTestCases('migration-v7', migrationCollection, testCaseInputs);
+    const {tempPath, removeTempDir} =
+      await runTestCases('migration-v7', migrationCollection, testCaseInputs);
 
     testCasesOutputPath = join(tempPath, 'projects/cdk-testing/src/test-cases/');
+    cleanupTestApp = removeTempDir;
   });
 
+  afterAll(() => cleanupTestApp());
+
   // Iterates through every test case directory and generates a jasmine test block that will
   // verify that the update schematics properly updated the test input to the expected output.
   testCases.forEach(testCaseName => {
diff --git a/src/cdk/schematics/testing/test-case-setup.ts b/src/cdk/schematics/testing/test-case-setup.ts
index 9099d325d1a..9f1b31cf3fe 100644
--- a/src/cdk/schematics/testing/test-case-setup.ts
+++ b/src/cdk/schematics/testing/test-case-setup.ts
@@ -10,8 +10,8 @@ import {getSystemPath, normalize} from '@angular-devkit/core';
 import {TempScopedNodeJsSyncHost} from '@angular-devkit/core/node/testing';
 import * as virtualFs from '@angular-devkit/core/src/virtual-fs/host';
 import {SchematicTestRunner} from '@angular-devkit/schematics/testing';
-import {readFileSync, writeFileSync, mkdirpSync} from 'fs-extra';
-import {join, dirname} from 'path';
+import {mkdirpSync, readFileSync, writeFileSync, removeSync} from 'fs-extra';
+import {dirname, join} from 'path';
 import {createTestApp, runPostScheduledTasks} from '../testing';
 
 /** Reads the UTF8 content of the specified file. Normalizes the path and ensures that */
@@ -34,7 +34,7 @@ export function createFileSystemTestApp(runner: SchematicTestRunner) {
     tempFileSystemHost.sync.write(f, virtualFs.stringToFileBuffer(appTree.readContent(f)));
   });
 
-  return {appTree, tempPath};
+  return {appTree, tempPath, removeTempDir: () => removeSync(tempPath)};
 }
 
 export async function runTestCases(migrationName: string, collectionPath: string,
@@ -47,7 +47,7 @@ export async function runTestCases(migrationName: string, collectionPath: string
   let logOutput = '';
   runner.logger.subscribe(entry => logOutput += entry.message);
 
-  const {appTree, tempPath} = createFileSystemTestApp(runner);
+  const {appTree, tempPath, removeTempDir} = createFileSystemTestApp(runner);
 
   // Write each test-case input to the file-system. This is necessary because otherwise
   // TSLint won't be able to pick up the test cases.
@@ -71,5 +71,5 @@ export async function runTestCases(migrationName: string, collectionPath: string
   // Switch back to the initial working directory.
   process.chdir(initialWorkingDir);
 
-  return {tempPath, logOutput};
+  return {tempPath, logOutput, removeTempDir};
 }
diff --git a/src/lib/schematics/ng-update/test-cases/misc/constructor-checks.spec.ts b/src/lib/schematics/ng-update/test-cases/misc/constructor-checks.spec.ts
index 9d3e0d391d7..fac8bd59591 100644
--- a/src/lib/schematics/ng-update/test-cases/misc/constructor-checks.spec.ts
+++ b/src/lib/schematics/ng-update/test-cases/misc/constructor-checks.spec.ts
@@ -4,7 +4,7 @@ import {runTestCases} from '@angular/cdk/schematics/testing';
 describe('constructor checks', () => {
 
   it('should properly report invalid constructor expression signatures', async () => {
-    const {logOutput} = await runTestCases('migration-v6', migrationCollection, {
+    const {logOutput, removeTempDir} = await runTestCases('migration-v6', migrationCollection, {
       'constructor-checks': require.resolve('./constructor-checks_input.ts')
     });
 
@@ -38,6 +38,8 @@ describe('constructor checks', () => {
 
     expect(logOutput).toMatch(/Found "ExtendedDateAdapter".*super.*: super\(string, Platform\)/);
     expect(logOutput).toMatch(/Found "ExtendedDateAdapter".*: new \w+\(string, Platform\)/);
+
+    removeTempDir();
   });
 });
 
diff --git a/src/lib/schematics/ng-update/test-cases/misc/import-checks.spec.ts b/src/lib/schematics/ng-update/test-cases/misc/import-checks.spec.ts
index f8b481cc232..300e798419f 100644
--- a/src/lib/schematics/ng-update/test-cases/misc/import-checks.spec.ts
+++ b/src/lib/schematics/ng-update/test-cases/misc/import-checks.spec.ts
@@ -4,12 +4,14 @@ import {migrationCollection} from '../index.spec';
 describe('v6 import misc checks', () => {
 
   it('should report imports for deleted animation constants', async () => {
-    const {logOutput} = await runTestCases('migration-v6', migrationCollection, {
+    const {logOutput, removeTempDir} = await runTestCases('migration-v6', migrationCollection, {
       'import-checks': require.resolve('./import-checks_input.ts')
     });
 
     expect(logOutput).toMatch(/Found deprecated symbol "SHOW_ANIMATION"/);
     expect(logOutput).toMatch(/Found deprecated symbol "HIDE_ANIMATION"/);
+
+    removeTempDir();
   });
 });
 
diff --git a/src/lib/schematics/ng-update/test-cases/v6-test-cases.spec.ts b/src/lib/schematics/ng-update/test-cases/v6-test-cases.spec.ts
index d9f09c0fc1a..2d5ba197496 100644
--- a/src/lib/schematics/ng-update/test-cases/v6-test-cases.spec.ts
+++ b/src/lib/schematics/ng-update/test-cases/v6-test-cases.spec.ts
@@ -19,6 +19,7 @@ describe('v6 upgrade test cases', () => {
   ];
 
   let testCasesOutputPath: string;
+  let cleanupTestApp: () => void;
 
   beforeAll(async () => {
     const testCaseInputs = testCases.reduce((inputs, testCaseName) => {
@@ -26,11 +27,15 @@ describe('v6 upgrade test cases', () => {
       return inputs;
     }, {} as {[name: string]: string});
 
-    const {tempPath} = await runTestCases('migration-v6', migrationCollection, testCaseInputs);
+    const {tempPath, removeTempDir} =
+      await runTestCases('migration-v6', migrationCollection, testCaseInputs);
 
     testCasesOutputPath = join(tempPath, 'projects/cdk-testing/src/test-cases/');
+    cleanupTestApp = removeTempDir;
   });
 
+  afterAll(() => cleanupTestApp());
+
   // Iterates through every test case directory and generates a jasmine test block that will
   // verify that the update schematics properly updated the test input to the expected output.
   testCases.forEach(testCaseName => {
diff --git a/src/lib/schematics/ng-update/test-cases/v7-test-cases.spec.ts b/src/lib/schematics/ng-update/test-cases/v7-test-cases.spec.ts
index 1c340f70307..b66b76537d8 100644
--- a/src/lib/schematics/ng-update/test-cases/v7-test-cases.spec.ts
+++ b/src/lib/schematics/ng-update/test-cases/v7-test-cases.spec.ts
@@ -14,6 +14,7 @@ describe('v7 upgrade test cases', () => {
   ];
 
   let testCasesOutputPath: string;
+  let cleanupTestApp: () => void;
 
   beforeAll(async () => {
     const testCaseInputs = testCases.reduce((inputs, testCaseName) => {
@@ -21,11 +22,15 @@ describe('v7 upgrade test cases', () => {
       return inputs;
     }, {} as {[name: string]: string});
 
-    const {tempPath} = await runTestCases('migration-v7', migrationCollection, testCaseInputs);
+    const {tempPath, removeTempDir} =
+      await runTestCases('migration-v7', migrationCollection, testCaseInputs);
 
     testCasesOutputPath = join(tempPath, 'projects/cdk-testing/src/test-cases/');
+    cleanupTestApp = removeTempDir;
   });
 
+  afterAll(() => cleanupTestApp());
+
   // Iterates through every test case directory and generates a jasmine test block that will
   // verify that the update schematics properly updated the test input to the expected output.
   testCases.forEach(testCaseName => {