# UPDATE_COMPATIBILITY_FIXTURE_DATA=true regenerates fixture data if needed.
# -run //HEAD only runs the test cases comparing against testdata for HEAD.
# We suppress the output because we are expecting to have changes.
# We suppress the test failure that occurs when there are changes.
UPDATE_COMPATIBILITY_FIXTURE_DATA=true go test k8s.io/api -run //HEAD >/dev/null 2>&1 || true

and to round-trip back to serialized form with identical bytes.
Adding new fields or API types *is* expected to modify these fixtures. To regenerate them, run:

```sh
UPDATE_COMPATIBILITY_FIXTURE_DATA=true go test k8s.io/api -run //HEAD
```

## Previous versions

The vX.Y.Z subdirectories contain serialized API objects from previous releases:

```
vX.Y.Z/

			// t.Logf("json (for locating the offending field based on surrounding data): %s", string(expectedJSON))
		}
	}

	if needsUpdate {
		const updateEnvVar = "UPDATE_COMPATIBILITY_FIXTURE_DATA"
		if os.Getenv(updateEnvVar) == "true" {
			writeFile(t, c.TestDataDirCurrentVersion, gvk, "", "json", expectedJSON)
			writeFile(t, c.TestDataDirCurrentVersion, gvk, "", "yaml", expectedYAML)