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README.md
Terraform
- Website: http://www.terraform.io
- IRC:
#terraformon Freenode - Mailing list: Google Groups
Terraform is a tool for building and changing infrastructure safely and efficiently.
Developing Terraform
If you wish to work on Terraform itself or any of its built-in providers,
you'll first need Go installed (version 1.2+ is
required). Make sure Go is properly installed, including setting up
a GOPATH. Make sure Go is compiled
with cgo support. You can verify this by running go env and checking that
CGOENABLED is set to "1".
Next, install Git, which is needed for some dependencies.
Then, install Gox, which is used as a compilation tool on top of Go:
$ go get -u github.com/mitchellh/gox
Next, clone this repository into $GOPATH/src/github.com/hashicorp/terraform
and then just type make. This will compile some dependencies and then
run the tests. If this exits with exit status 0, then everything is working!
$ make
...
To compile a development version of Terraform and the built-in plugins,
run make dev. This will put Terraform binaries in the bin folder:
$ make dev
...
$ bin/terraform
...
If you're developing a specific package, you can run tests for just that
package by specifying the TEST variable. For example below, only
terraform package tests will be run.
$ make test TEST=./terraform
...
Acceptance Tests
Terraform also has a comprehensive acceptance test suite covering most of the major features of the built-in providers.
If you're working on a feature of a provider and want to verify it is functioning (and hasn't broken anything else), we recommend running the acceptance tests. Note that we do not require that you run or write acceptance tests to have a PR accepted. The acceptance tests are just here for your convenience.
Warning: The acceptance tests create/destroy/modify real resources, which may incur real costs. In the presence of a bug, it is technically possible that broken providers could corrupt existing infrastructure as well. Therefore, please run the acceptance providers at your own risk. At the very least, we recommend running them in their own private account for whatever provider you're testing.
To run the acceptance tests, invoke make testacc:
$ make testacc TEST=./builtin/providers/aws TESTARGS='-run=VPC'
...
The TEST variable is required, and you should specify the folder where
the provider is. The TESTARGS variable is recommended to filter down
to a specific resource to test, since testing all of them at once can
take a very long time.
Acceptance tests typically require other environment variables to be set for things such as access keys. The provider itself should error early and tell you what to set, so it is not documented here.