diff --git a/aio/content/examples/testing/stackblitz.json b/aio/content/examples/testing/stackblitz.json
index 3264b6dd99..c95a8adb09 100644
--- a/aio/content/examples/testing/stackblitz.json
+++ b/aio/content/examples/testing/stackblitz.json
@@ -10,9 +10,7 @@
"src/app/**/*.css",
"src/app/**/*.html",
- "src/app/**/*.ts",
-
- "!src/**/*.spec.ts"
+ "src/app/**/*.ts"
],
"tags": ["testing"],
"devDependencies": ["jasmine-core", "jasmine-marbles"]
diff --git a/aio/content/guide/test-debugging.md b/aio/content/guide/test-debugging.md
index c2abe113bf..9795e6f030 100644
--- a/aio/content/guide/test-debugging.md
+++ b/aio/content/guide/test-debugging.md
@@ -2,15 +2,6 @@
If your tests aren't working as you expect them to, you can inspect and debug them in the browser.
-
-
- For the sample application that the testing guides describe, see the sample app.
-
- For the tests features in the testing guides, see tests.
-
-
-
-
Debug specs in the browser in the same way that you debug an application.
1. Reveal the Karma browser window. See [Set up testing](guide/testing#set-up-testing) if you need help with this step.
diff --git a/aio/content/guide/testing-attribute-directives.md b/aio/content/guide/testing-attribute-directives.md
index 13bdc8ce8e..35b0b48683 100644
--- a/aio/content/guide/testing-attribute-directives.md
+++ b/aio/content/guide/testing-attribute-directives.md
@@ -8,9 +8,9 @@ Its name reflects the way the directive is applied: as an attribute on a host el
- For the sample app that the testing guides describe, see the sample app.
+ For a hands-on experience you can run tests and explore the test code in your browser as your read this guide.
- For the tests features in the testing guides, see tests.
+ If you'd like to experiment with the application that this guide describes, you can run it in your browser or download and run it locally.
diff --git a/aio/content/guide/testing-code-coverage.md b/aio/content/guide/testing-code-coverage.md
index ed8aa3a582..29dd28bb36 100644
--- a/aio/content/guide/testing-code-coverage.md
+++ b/aio/content/guide/testing-code-coverage.md
@@ -7,9 +7,9 @@ Code coverage reports show you any parts of your code base that may not be prope
-For the sample app that the testing guides describe, see the sample app.
+ For a hands-on experience you can run tests and explore the test code in your browser as your read this guide.
-For the tests features in the testing guides, see tests.
+ If you'd like to experiment with the application that this guide describes, you can run it in your browser or download and run it locally.
diff --git a/aio/content/guide/testing-components-basics.md b/aio/content/guide/testing-components-basics.md
index 72a551ddd0..1673d61329 100644
--- a/aio/content/guide/testing-components-basics.md
+++ b/aio/content/guide/testing-components-basics.md
@@ -15,9 +15,9 @@ can validate much of the component's behavior in an easier, more obvious way.
- For the sample application that the testing guides describe, see the sample app.
+ For a hands-on experience you can run tests and explore the test code in your browser as your read this guide.
- For the tests features in the testing guides, see tests.
+ If you'd like to experiment with the application that this guide describes, you can run it in your browser or download and run it locally.
diff --git a/aio/content/guide/testing-components-scenarios.md b/aio/content/guide/testing-components-scenarios.md
index 97d0a666fe..3972faca07 100644
--- a/aio/content/guide/testing-components-scenarios.md
+++ b/aio/content/guide/testing-components-scenarios.md
@@ -4,9 +4,9 @@ This guide explores common component testing use cases.
- For the sample application that the testing guides describe, see the sample app.
+ For a hands-on experience you can run tests and explore the test code in your browser as your read this guide.
- For the tests features in the testing guides, see tests.
+ If you'd like to experiment with the application that this guide describes, you can run it in your browser or download and run it locally.
diff --git a/aio/content/guide/testing-pipes.md b/aio/content/guide/testing-pipes.md
index b2d4e1d3fa..5cb734e2e0 100644
--- a/aio/content/guide/testing-pipes.md
+++ b/aio/content/guide/testing-pipes.md
@@ -4,9 +4,9 @@ You can test [pipes](guide/pipes) without the Angular testing utilities.
- For the sample application that the testing guides describe, see the sample app.
+ For a hands-on experience you can run tests and explore the test code in your browser as your read this guide.
- For the tests features in the testing guides, see tests.
+ If you'd like to experiment with the application that this guide describes, you can run it in your browser or download and run it locally.
diff --git a/aio/content/guide/testing-services.md b/aio/content/guide/testing-services.md
index 6d887d532c..78cb8f3f66 100644
--- a/aio/content/guide/testing-services.md
+++ b/aio/content/guide/testing-services.md
@@ -5,9 +5,9 @@ To check that your services are working as you intend, you can write tests speci
- For the sample application that the testing guides describe, see the sample app.
+ For a hands-on experience you can run tests and explore the test code in your browser as your read this guide.
- For the tests features in the testing guides, see tests.
+ If you'd like to experiment with the application that this guide describes, you can run it in your browser or download and run it locally.
diff --git a/aio/content/guide/testing.md b/aio/content/guide/testing.md
index 1ceb1e3940..94a498241a 100644
--- a/aio/content/guide/testing.md
+++ b/aio/content/guide/testing.md
@@ -21,9 +21,9 @@ This sample application is much like the one in the [_Tour of Heroes_ tutorial](
- For the sample application that the testing guides describe, see the sample app.
+ For a hands-on experience you can run tests and explore the test code in your browser as your read this guide.
- For the tests features in the testing guides, see tests.
+ If you'd like to experiment with the application that this guide describes, you can run it in your browser or download and run it locally.