ensure test runs for future versions of terraform

runTestVersions should not be used where runTest and a version check would
suffice. Each call to runTestVersions must be manually updated when new
versions of Terraform are released, whereas runTest tests are run against all
known relevant releases.

tfexec/internal/e2etest/providers_lock_test.go

@@ -7,11 +7,17 @@ import (
 	"github.com/hashicorp/go-version"
 
 	"github.com/hashicorp/terraform-exec/tfexec"
-	"github.com/hashicorp/terraform-exec/tfexec/internal/testutil"
+)
+
+var (
+	providersLockMinVersion = version.Must(version.NewVersion("0.14.0"))
 )
 
 func TestProvidersLock(t *testing.T) {
-	runTestVersions(t, []string{testutil.Latest014, testutil.Latest015, testutil.Latest_v1}, "basic", func(t *testing.T, tfv *version.Version, tf *tfexec.Terraform) {
+	runTest(t, "basic", func(t *testing.T, tfv *version.Version, tf *tfexec.Terraform) {
+		if tfv.LessThan(providersLockMinVersion) {
+			t.Skip("terraform providers lock was added in Terraform 0.14, so test is not valid")
+		}
 		err := tf.Init(context.Background())
 		if err != nil {
 			t.Fatalf("error running Init in test directory: %s", err)