fix: Ignore changes to attributes (#2402)

When a `github_repository_file` resource was created with a
provider version older than 6.3.0 the new attributes added in
that version causes a new commit to be created when there
should be no changes to the file.

Author: grahamhar

github/resource_github_repository_file.go

@@ -122,24 +122,27 @@ func resourceGithubRepositoryFile() *schema.Resource {
 				Default:     false,
 			},
 			"autocreate_branch": {
-				Type:        schema.TypeBool,
-				Optional:    true,
-				Description: "Automatically create the branch if it could not be found. Subsequent reads if the branch is deleted will occur from 'autocreate_branch_source_branch'",
-				Default:     false,
+				Type:             schema.TypeBool,
+				Optional:         true,
+				Description:      "Automatically create the branch if it could not be found. Subsequent reads if the branch is deleted will occur from 'autocreate_branch_source_branch'",
+				Default:          false,
+				DiffSuppressFunc: autoBranchDiffSuppressFunc,
 			},
 			"autocreate_branch_source_branch": {
-				Type:         schema.TypeString,
-				Default:      "main",
-				Optional:     true,
-				Description:  "The branch name to start from, if 'autocreate_branch' is set. Defaults to 'main'.",
-				RequiredWith: []string{"autocreate_branch"},
+				Type:             schema.TypeString,
+				Default:          "main",
+				Optional:         true,
+				Description:      "The branch name to start from, if 'autocreate_branch' is set. Defaults to 'main'.",
+				RequiredWith:     []string{"autocreate_branch"},
+				DiffSuppressFunc: autoBranchDiffSuppressFunc,
 			},
 			"autocreate_branch_source_sha": {
-				Type:         schema.TypeString,
-				Optional:     true,
-				Computed:     true,
-				Description:  "The commit hash to start from, if 'autocreate_branch' is set. Defaults to the tip of 'autocreate_branch_source_branch'. If provided, 'autocreate_branch_source_branch' is ignored.",
-				RequiredWith: []string{"autocreate_branch"},
+				Type:             schema.TypeString,
+				Optional:         true,
+				Computed:         true,
+				Description:      "The commit hash to start from, if 'autocreate_branch' is set. Defaults to the tip of 'autocreate_branch_source_branch'. If provided, 'autocreate_branch_source_branch' is ignored.",
+				RequiredWith:     []string{"autocreate_branch"},
+				DiffSuppressFunc: autoBranchDiffSuppressFunc,
 			},
 		},
 	}
@@ -507,3 +510,13 @@ func resourceGithubRepositoryFileDelete(d *schema.ResourceData, meta interface{}
 
 	return nil
 }
+
+func autoBranchDiffSuppressFunc(k, _, _ string, d *schema.ResourceData) bool {
+	if !d.Get("autocreate_branch").(bool) {
+		switch k {
+		case "autocreate_branch", "autocreate_branch_source_branch", "autocreate_branch_source_sha":
+			return true
+		}
+	}
+	return false
+}

github/resource_github_repository_file_test.go

@@ -17,13 +17,13 @@ func TestAccGithubRepositoryFile(t *testing.T) {
 	t.Run("creates and manages files", func(t *testing.T) {
 
 		config := fmt.Sprintf(`
-
+	
 			resource "github_repository" "test" {
 				name                 = "tf-acc-test-%s"
 				auto_init            = true
 				vulnerability_alerts = true
 			}
-
+	
 			resource "github_repository_file" "test" {
 				repository     = github_repository.test.name
 				branch         = "main"
@@ -34,7 +34,6 @@ func TestAccGithubRepositoryFile(t *testing.T) {
 				commit_email   = "[email protected]"
 			}
 		`, randomID)
-
 		check := resource.ComposeTestCheckFunc(
 			resource.TestCheckResourceAttr(
 				"github_repository_file.test", "content",
@@ -60,6 +59,9 @@ func TestAccGithubRepositoryFile(t *testing.T) {
 			resource.TestCheckResourceAttrSet(
 				"github_repository_file.test", "commit_sha",
 			),
+			resource.TestCheckNoResourceAttr("github_repository_file.test", "autocreate_branch"),
+			resource.TestCheckNoResourceAttr("github_repository_file.test", "autocreate_branch_source_branch"),
+			resource.TestCheckNoResourceAttr("github_repository_file.test", "autocreate_branch_source_sha"),
 		)
 
 		testCase := func(t *testing.T, mode string) {
@@ -132,6 +134,9 @@ func TestAccGithubRepositoryFile(t *testing.T) {
 			resource.TestCheckResourceAttrSet(
 				"github_repository_file.test", "commit_sha",
 			),
+			resource.TestCheckNoResourceAttr("github_repository_file.test", "autocreate_branch"),
+			resource.TestCheckNoResourceAttr("github_repository_file.test", "autocreate_branch_source_branch"),
+			resource.TestCheckNoResourceAttr("github_repository_file.test", "autocreate_branch_source_sha"),
 		)
 
 		testCase := func(t *testing.T, mode string) {
@@ -224,6 +229,9 @@ func TestAccGithubRepositoryFile(t *testing.T) {
 			resource.TestCheckResourceAttrSet(
 				"github_repository_file.test", "commit_sha",
 			),
+			resource.TestCheckNoResourceAttr("github_repository_file.test", "autocreate_branch"),
+			resource.TestCheckNoResourceAttr("github_repository_file.test", "autocreate_branch_source_branch"),
+			resource.TestCheckNoResourceAttr("github_repository_file.test", "autocreate_branch_source_sha"),
 		)
 
 		testCase := func(t *testing.T, mode string) {
@@ -261,7 +269,7 @@ func TestAccGithubRepositoryFile(t *testing.T) {
 				auto_init            = true
 				vulnerability_alerts = true
 			}
-
+	
 			resource "github_repository_file" "test" {
 				repository        = github_repository.test.name
 				branch            = "does/not/exist"
@@ -299,6 +307,9 @@ func TestAccGithubRepositoryFile(t *testing.T) {
 			resource.TestCheckResourceAttrSet(
 				"github_repository_file.test", "commit_sha",
 			),
+			resource.TestCheckResourceAttr("github_repository_file.test", "autocreate_branch", "true"),
+			resource.TestCheckResourceAttr("github_repository_file.test", "autocreate_branch_source_branch", "main"),
+			resource.TestCheckResourceAttrSet("github_repository_file.test", "autocreate_branch_source_sha"),
 		)
 
 		testCase := func(t *testing.T, mode string) {