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Add documentation on how to install utilities with go install #1098

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Add documentation on how to install utilities with go install #1098

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51 changes: 39 additions & 12 deletions docs/_docs/02_testing-best-practices/debugging-interleaved-test-output.md
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Original file line number Diff line number Diff line change
Expand Up @@ -53,8 +53,24 @@ Terratest also ships utility binaries that you can use to improve the debugging
test output](#debugging-interleaved-test-output)). The compiled binaries are shipped separately from the library in the
[Releases page](https://github.com/gruntwork-io/terratest/releases).

To install a binary, download the version that matches your platform and place it somewhere on your `PATH`. For example
to install version 0.13.13 of `terratest_log_parser`:
The following binaries are currently available with `terratest`:

{:.doc-styled-table}
| Command | Description |
| ------------------------ | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
| **terratest_log_parser** | Parses test output from the `go test` command and breaks out the interleaved logs into logs for each test. Integrate with your CI environment to help debug failing tests. |
| **pick-instance-type** | Takes an AWS region and a list of EC2 instance types and returns the first instance type in the list that is available in all Availability Zones in the given region, or exits with an error if no instance type is available in all AZs. This is useful because certain instance types, such as t2.micro, are not available in some newer AZs, while t3.micro is not available in some older AZs. If you have code that needs to run on a "small" instance across all AZs in many regions, you can use this CLI tool to automatically figure out which instance type you should use. |

You can install any binary using one of the following methods:

- [Manual installation](#manual-installation)
- [go install](#go-install)
- [gruntwork-installer](#gruntwork-installer)

### Manual installation

To install the binary manually, download the version that matches your platform and place it somewhere on your `PATH`.
For example to install version 0.13.13 of `terratest_log_parser`:

```bash
# This example assumes a linux 64bit machine
Expand All @@ -66,17 +82,28 @@ chmod +x terratest_log_parser
sudo mv terratest_log_parser /usr/local/bin
```

Alternatively, you can use [the gruntwork-installer](https://github.com/gruntwork-io/gruntwork-installer), which will do
the above steps and automatically select the right binary for your platform:
### go install

```bash
gruntwork-install --binary-name 'terratest_log_parser' --repo 'https://github.com/gruntwork-io/terratest' --tag 'v0.13.13'
`go` supports building and installing packages and commands from source using the [go
install](https://pkg.go.dev/cmd/go#hdr-Compile_and_install_packages_and_dependencies) command. To install the binaries
with `go install`, point `go install` to the repo and path where the main code for each relevant command lives. For
example, you can install the terratest log parser binary with:

```
go install github.com/gruntwork-io/terratest/cmd/terratest_log_parser@latest
```

The following binaries are currently available with `terratest`:
Similarly, to install `pick-instance-type`, you can run:

{:.doc-styled-table}
| Command | Description |
| ------------------------ | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
| **terratest_log_parser** | Parses test output from the `go test` command and breaks out the interleaved logs into logs for each test. Integrate with your CI environment to help debug failing tests. |
| **pick-instance-type** | Takes an AWS region and a list of EC2 instance types and returns the first instance type in the list that is available in all Availability Zones in the given region, or exits with an error if no instance type is available in all AZs. This is useful because certain instance types, such as t2.micro, are not available in some newer AZs, while t3.micro is not available in some older AZs. If you have code that needs to run on a "small" instance across all AZs in many regions, you can use this CLI tool to automatically figure out which instance type you should use. |
```
go install github.com/gruntwork-io/terratest/cmd/pick-instance-type@latest
```

### gruntwork-installer

You can also use [the gruntwork-installer utility](https://github.com/gruntwork-io/gruntwork-installer) to install the
binaries, which will do the above steps and automatically select the right binary for your platform:

```bash
gruntwork-install --binary-name 'terratest_log_parser' --repo 'https://github.com/gruntwork-io/terratest' --tag 'v0.13.13'
```