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Update GoogleTest Bazel quickstart for Bzlmod
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PiperOrigin-RevId: 652824490
Change-Id: I5e6f57004708e7fa62abb454db9bae81fa265c83
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derekmauro authored and copybara-github committed Jul 16, 2024
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53 changes: 23 additions & 30 deletions docs/quickstart-bazel.md
Original file line number Diff line number Diff line change
Expand Up @@ -10,8 +10,8 @@ To complete this tutorial, you'll need:

* A compatible operating system (e.g. Linux, macOS, Windows).
* A compatible C++ compiler that supports at least C++14.
* [Bazel](https://bazel.build/), the preferred build system used by the
GoogleTest team.
* [Bazel](https://bazel.build/) 7.0 or higher, the preferred build system used
by the GoogleTest team.

See [Supported Platforms](platforms.md) for more information about platforms
compatible with GoogleTest.
Expand All @@ -28,7 +28,7 @@ A
[Bazel workspace](https://docs.bazel.build/versions/main/build-ref.html#workspace)
is a directory on your filesystem that you use to manage source files for the
software you want to build. Each workspace directory has a text file named
`WORKSPACE` which may be empty, or may contain references to external
`MODULE.bazel` which may be empty, or may contain references to external
dependencies required to build the outputs.

First, create a directory for your workspace:
Expand All @@ -37,30 +37,20 @@ First, create a directory for your workspace:
$ mkdir my_workspace && cd my_workspace
```

Next, you’ll create the `WORKSPACE` file to specify dependencies. A common and
recommended way to depend on GoogleTest is to use a
[Bazel external dependency](https://docs.bazel.build/versions/main/external.html)
via the
[`http_archive` rule](https://docs.bazel.build/versions/main/repo/http.html#http_archive).
To do this, in the root directory of your workspace (`my_workspace/`), create a
file named `WORKSPACE` with the following contents:
Next, you’ll create the `MODULE.bazel` file to specify dependencies. As of Bazel
7.0, the recommended way to consume GoogleTest is through the
[Bazel Central Registry](https://registry.bazel.build/modules/googletest). To do
this, create a `MODULE.bazel` file in the root directory of your Bazel workspace
with the following content:

```
load("@bazel_tools//tools/build_defs/repo:http.bzl", "http_archive")
# MODULE.bazel
http_archive(
name = "com_google_googletest",
urls = ["https://github.com/google/googletest/archive/5ab508a01f9eb089207ee87fd547d290da39d015.zip"],
strip_prefix = "googletest-5ab508a01f9eb089207ee87fd547d290da39d015",
)
# Choose the most recent version available at
# https://registry.bazel.build/modules/googletest
bazel_dep(name = "googletest", version = "1.15.0")
```

The above configuration declares a dependency on GoogleTest which is downloaded
as a ZIP archive from GitHub. In the above example,
`5ab508a01f9eb089207ee87fd547d290da39d015` is the Git commit hash of the
GoogleTest version to use; we recommend updating the hash often to point to the
latest version. Use a recent hash on the `main` branch.

Now you're ready to build C++ code that uses GoogleTest.

## Create and run a binary
Expand Down Expand Up @@ -92,17 +82,20 @@ following contents:
```
cc_test(
name = "hello_test",
size = "small",
srcs = ["hello_test.cc"],
deps = ["@com_google_googletest//:gtest_main"],
name = "hello_test",
size = "small",
srcs = ["hello_test.cc"],
deps = [
"@googletest//:gtest",
"@googletest//:gtest_main",
],
)
```

This `cc_test` rule declares the C++ test binary you want to build, and links to
GoogleTest (`//:gtest_main`) using the prefix you specified in the `WORKSPACE`
file (`@com_google_googletest`). For more information about Bazel `BUILD` files,
see the
the GoogleTest library (`@googletest//:gtest"`) and the GoogleTest `main()`
function (`@googletest//:gtest_main`). For more information about Bazel `BUILD`
files, see the
[Bazel C++ Tutorial](https://docs.bazel.build/versions/main/tutorial/cpp.html).

{: .callout .note}
Expand All @@ -115,7 +108,7 @@ on supported language versions.
Now you can build and run your test:

<pre>
<strong>my_workspace$ bazel test --cxxopt=-std=c++14 --test_output=all //:hello_test</strong>
<strong>$ bazel test --cxxopt=-std=c++14 --test_output=all //:hello_test</strong>
INFO: Analyzed target //:hello_test (26 packages loaded, 362 targets configured).
INFO: Found 1 test target...
INFO: From Testing //:hello_test:
Expand Down

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