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# Rust rules
* [rust_doc](#rust_doc)
* [rust_doc_test](#rust_doc_test)
<a id="#rust_doc"></a>
## rust_doc
<pre>
rust_doc(<a href="#rust_doc-name">name</a>, <a href="#rust_doc-dep">dep</a>, <a href="#rust_doc-html_after_content">html_after_content</a>, <a href="#rust_doc-html_before_content">html_before_content</a>, <a href="#rust_doc-html_in_header">html_in_header</a>, <a href="#rust_doc-markdown_css">markdown_css</a>)
</pre>
**ATTRIBUTES**
| Name | Description | Type | Mandatory | Default |
| :------------- | :------------- | :------------- | :------------- | :------------- |
| <a id="rust_doc-name"></a>name | A unique name for this target. | <a href="https://bazel.build/docs/build-ref.html#name">Name</a> | required | |
| <a id="rust_doc-dep"></a>dep | The crate to generate documentation for. | <a href="https://bazel.build/docs/build-ref.html#labels">Label</a> | required | |
| <a id="rust_doc-html_after_content"></a>html_after_content | - | <a href="https://bazel.build/docs/build-ref.html#labels">Label</a> | optional | None |
| <a id="rust_doc-html_before_content"></a>html_before_content | - | <a href="https://bazel.build/docs/build-ref.html#labels">Label</a> | optional | None |
| <a id="rust_doc-html_in_header"></a>html_in_header | - | <a href="https://bazel.build/docs/build-ref.html#labels">Label</a> | optional | None |
| <a id="rust_doc-markdown_css"></a>markdown_css | - | <a href="https://bazel.build/docs/build-ref.html#labels">List of labels</a> | optional | [] |
<a id="#rust_doc_test"></a>
## rust_doc_test
<pre>
rust_doc_test(<a href="#rust_doc_test-name">name</a>, <a href="#rust_doc_test-dep">dep</a>)
</pre>
Runs Rust documentation tests.
Example:
Suppose you have the following directory structure for a Rust library crate:
```
[workspace]/
WORKSPACE
hello_lib/
BUILD
src/
lib.rs
```
To run [documentation tests][doc-test] for the `hello_lib` crate, define a
`rust_doc_test` target that depends on the `hello_lib` `rust_library` target:
[doc-test]: https://doc.rust-lang.org/book/documentation.html#documentation-as-tests
```python
package(default_visibility = ["//visibility:public"])
load("@io_bazel_rules_rust//rust:rust.bzl", "rust_library", "rust_doc_test")
rust_library(
name = "hello_lib",
srcs = ["src/lib.rs"],
)
rust_doc_test(
name = "hello_lib_doc_test",
dep = ":hello_lib",
)
```
Running `bazel test //hello_lib:hello_lib_doc_test` will run all documentation tests for the `hello_lib` library crate.
**ATTRIBUTES**
| Name | Description | Type | Mandatory | Default |
| :------------- | :------------- | :------------- | :------------- | :------------- |
| <a id="rust_doc_test-name"></a>name | A unique name for this target. | <a href="https://bazel.build/docs/build-ref.html#name">Name</a> | required | |
| <a id="rust_doc_test-dep"></a>dep | The label of the target to run documentation tests for.<br><br><code>rust_doc_test</code> can run documentation tests for the source files of <code>rust_library</code> or <code>rust_binary</code> targets. | <a href="https://bazel.build/docs/build-ref.html#labels">Label</a> | required | |