This test presents itself in an awkward manner as part of the AWS test
suite rather than the core test suite - this is because you cannot use
real providers in context tests because of circular references, and
simplistic test providers in that package do not demonstrate the issue.
In the interests of getting this fix in quickly and still having
regression coverage for it, it was agreed to include the change here
instead.
Running the test TestAccAWSVPC_coreMismatchedDiffs without the changes
in d95ab75 applied leads to the following output:
```
$ make testacc TEST=./builtin/providers/aws TESTARGS="-run TestAccAWSVPC_coreMismatchedDiffs"
==> Checking that code complies with gofmt requirements...
/Users/James/Code/go/bin/stringer
GO15VENDOREXPERIMENT=1 go generate $(GO15VENDOREXPERIMENT=1 go list ./... | grep -v /vendor/)
TF_ACC=1 GO15VENDOREXPERIMENT=1 go test ./builtin/providers/aws -v -run TestAccAWSVPC_coreMismatchedDiffs -timeout 120m
=== RUN TestAccAWSVPC_coreMismatchedDiffs
--- FAIL: TestAccAWSVPC_coreMismatchedDiffs (2.26s)
testing.go:148: Step 0 error: Error applying: 1 error(s) occurred:
* aws_vpc.test: diffs didn't match during apply. This is a bug with Terraform and should be reported.
FAIL
exit status 1
FAIL github.com/hashicorp/terraform/builtin/providers/aws 2.281s
make: *** [testacc] Error 1
```
Applying the changes in d95ab75 (pull request GH-4965) yields the
following result when running the test:
```
$ make testacc TEST=./builtin/providers/aws TESTARGS="-run TestAccAWSVPC_coreMismatchedDiffs"
==> Checking that code complies with gofmt requirements...
/Users/James/Code/go/bin/stringer
GO15VENDOREXPERIMENT=1 go generate $(GO15VENDOREXPERIMENT=1 go list ./... | grep -v /vendor/)
TF_ACC=1 GO15VENDOREXPERIMENT=1 go test ./builtin/providers/aws -v -run TestAccAWSVPC_coreMismatchedDiffs -timeout 120m
=== RUN TestAccAWSVPC_coreMismatchedDiffs
--- PASS: TestAccAWSVPC_coreMismatchedDiffs (15.17s)
PASS
ok github.com/hashicorp/terraform/builtin/providers/aws 15.183s
```
The test has a rather misleading name ("AWS") such that it is actually run as
part of the nightly acceptance testing. The VPC resource is quick and free to
create, hence the selection.
The AWS free tier allows up to 750 hours on t2.micro
instance types. It's better to use cheaper instances
in case the resources are not cleaned up if a tests
is canceled or crashes.
Removes overspecified config that is unrelated to testing the auto scaling
group's autogenerated name. The test is only concerned with checking that
the auto scaling group was created successfully with an autogenerated name
matching a specific pattern.
Removes overspecified config that is unrelated to the auto scaling
group's availability zone and VPC identifier acceptance tests. The
created auto scaling groups do not need to spin up any hosts since
the acceptance tests are only concerned with checking the existence
of the associated availability zones and VPC identifiers.
stack72