Add tests to ensure terragrunt, TOML and terraform version handle sit…

…uations where no version is available when config files are present

Issue #420

lib/param_parsing/terraform_version_test.go

@@ -17,6 +17,18 @@ func TestGetParamsFromTerraformVersion(t *testing.T) {
 	}
 }
 
+func TestGetParamsFromTerraformVersion_no_version(t *testing.T) {
+	var params Params
+	params.ChDirPath = "../../test-data/skip-integration-tests/test_versiontf_no_version_constraint"
+	params, err := GetParamsFromTerraformVersion(params)
+	if err != nil {
+		t.Fatalf("Got error '%s'", err)
+	}
+	if params.Version != "" {
+		t.Errorf("Expected empty version string. Got: %v", params.Version)
+	}
+}
+
 func TestGetParamsFromTerraformVersion_no_file(t *testing.T) {
 	var params Params
 	params.ChDirPath = "../../test-data/skip-integration-tests/test_no_file"

lib/param_parsing/terragrunt_test.go

@@ -1,9 +1,10 @@
 package param_parsing
 
 import (
+	"testing"
+
 	"github.com/hashicorp/go-version"
 	"github.com/warrensbox/terraform-switcher/lib"
-	"testing"
 )
 
 func TestGetVersionFromTerragrunt(t *testing.T) {
@@ -34,6 +35,20 @@ func TestGetVersionTerragrunt_with_no_terragrunt_file(t *testing.T) {
 	}
 }
 
+func TestGetVersionTerragrunt_with_no_version(t *testing.T) {
+	var params Params
+	logger = lib.InitLogger("DEBUG")
+	params = initParams(params)
+	params.ChDirPath = "../../test-data/skip-integration-tests/test_terragrunt_no_version"
+	params, err := GetVersionFromTerragrunt(params)
+	if err != nil {
+		t.Fatalf("Got error '%s'", err)
+	}
+	if params.Version != "" {
+		t.Error("Version should be empty")
+	}
+}
+
 func TestGetVersionFromTerragrunt_erroneous_file(t *testing.T) {
 	var params Params
 	logger = lib.InitLogger("DEBUG")

lib/param_parsing/tfswitch_test.go

@@ -28,3 +28,15 @@ func TestGetParamsFromTfSwitch_no_file(t *testing.T) {
 		t.Errorf("Expected empty version string. Got: %v", params.Version)
 	}
 }
+
+func TestGetParamsFromTfSwitch_no_version(t *testing.T) {
+	var params Params
+	params.ChDirPath = "../../test-data/skip-integration-tests/test_no_version"
+	params, err := GetParamsFromTfSwitch(params)
+	if err != nil {
+		t.Errorf("Expected no error. Got: %v", err)
+	}
+	if params.Version != "" {
+		t.Errorf("Expected empty version string. Got: %v", params.Version)
+	}
+}

test-data/skip-integration-tests/test_terragrunt_no_version/terragrunt.hcl

@@ -0,0 +1 @@
+terragrunt_version_constraint = "= 0.36.2"

test-data/skip-integration-tests/test_tfswitchtoml_no_version/.tfswitch.toml

@@ -0,0 +1,2 @@
+bin = "/usr/local/bin/terraform_from_toml"
+log-level = "NOTICE"

test-data/skip-integration-tests/test_versiontf_no_version_constraint/version.tf

@@ -0,0 +1,6 @@
+terraform {
+  required_providers {
+    aws        = ">= 2.52.0"
+    kubernetes = ">= 1.11.1"
+  }
+}