A test rule that compares two binary files.
The rule uses a Bash command (diff) on Linux/macOS/non-Windows, and a cmd.exe
command (fc.exe) on Windows (no Bash is required).
## diff_test
load("@bazel_skylib//rules:diff_test.bzl", "diff_test")
diff_test(name, failure_message, file1, file2)
A test that compares two files.
The test succeeds if the files' contents match.
**ATTRIBUTES**
| Name | Description | Type | Mandatory | Default |
| :------------- | :------------- | :------------- | :------------- | :------------- |
| name | A unique name for this target. | Name | required | |
| failure_message | Additional message to log if the files' contents do not match. | String | optional | `""` |
| file1 | Label of the file to compare to `file2`. | Label | required | |
| file2 | Label of the file to compare to `file1`. | Label | required | |