experimental: faster tfversion tests #493
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* Find Terraform binaries that we've already downloaded instead of repeatedly downloading them * Read a TF_LOG_INSTALLER environment variable to log hc-install activity. Works best with a branch of hc-install that prepends log levels to logged messages. * What if? Could provider installation be optimized? Before: ``` $ time go test ./tfversion -count=1 ok github.com/hashicorp/terraform-plugin-testing/tfversion 223.588s go test ./tfversion -count=1 45.66s user 29.61s system 33% cpu 3:44.32 total ``` After: ``` $ time go test ./tfversion -count=1 ok github.com/hashicorp/terraform-plugin-testing/tfversion 58.465s go test ./tfversion -count=1 22.14s user 12.61s system 58% cpu 58.982 total ```
bbasata
commented
Apr 24, 2025
| Version: tfVersion, | ||
| }) | ||
| } | ||
| sources = append(sources, findSource, releasesSource) |
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This is the part that makes this faster. Instead of a "releases source," use a "find source" and a "releases source."
bbasata
commented
Apr 24, 2025
| strings.TrimRight(tempDir, string(os.PathSeparator)), | ||
| "plugintest-terraform", | ||
| strconv.Itoa(os.Getpid()), | ||
| tfVersion.String(), |
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One directory per-version, per-process.
ok github.com/hashicorp/terraform-plugin-testing/tfversion 16.360s TF_LOG_INSTALLER=info go test -v ./tfversion 25.66s user 14.50s system 236% cpu 16.969 total
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For fun, not to be merged.
The
tfversiontests are fairly unique in that they specify"TF_ACC_TERRAFORM_VERSION". As a consequence, each of these tests downloads Terraform into its own temporary directory. This PR asks: what if they shared one temporary directory?TF_LOG_INSTALLERenvironment variable to log hc-install activity. Works best with a branch of hc-install that prepends log levels to logged messages.Before:
After: