feat: add attribute validation

examples/resources/forgejo_repository/resource.tf

@@ -23,7 +23,7 @@ resource "forgejo_repository" "user_non_defaults" {
   issue_labels   = "Default"
   auto_init      = true
   readme         = "Default"
-  trust_model    = "custom"
+  trust_model    = "collaborator"
 }
 
 resource "forgejo_repository" "org_defaults" {
@@ -45,7 +45,7 @@ resource "forgejo_repository" "org_non_defaults" {
   issue_labels   = "Default"
   auto_init      = true
   readme         = "Default"
-  trust_model    = "custom"
+  trust_model    = "collaborator"
 }
 
 output "user_debug_defaults" {

go.mod

@@ -5,6 +5,7 @@ go 1.23
 require (
 	codeberg.org/mvdkleijn/forgejo-sdk/forgejo v1.2.0
 	github.com/hashicorp/terraform-plugin-framework v1.13.0
+	github.com/hashicorp/terraform-plugin-framework-validators v0.16.0
 	github.com/hashicorp/terraform-plugin-go v0.25.0
 	github.com/hashicorp/terraform-plugin-log v0.9.0
 	github.com/hashicorp/terraform-plugin-testing v1.11.0

go.sum

@@ -84,6 +84,8 @@ github.com/hashicorp/terraform-json v0.23.0 h1:sniCkExU4iKtTADReHzACkk8fnpQXrdD2
 github.com/hashicorp/terraform-json v0.23.0/go.mod h1:MHdXbBAbSg0GvzuWazEGKAn/cyNfIB7mN6y7KJN6y2c=
 github.com/hashicorp/terraform-plugin-framework v1.13.0 h1:8OTG4+oZUfKgnfTdPTJwZ532Bh2BobF4H+yBiYJ/scw=
 github.com/hashicorp/terraform-plugin-framework v1.13.0/go.mod h1:j64rwMGpgM3NYXTKuxrCnyubQb/4VKldEKlcG8cvmjU=
+github.com/hashicorp/terraform-plugin-framework-validators v0.16.0 h1:O9QqGoYDzQT7lwTXUsZEtgabeWW96zUBh47Smn2lkFA=
+github.com/hashicorp/terraform-plugin-framework-validators v0.16.0/go.mod h1:Bh89/hNmqsEWug4/XWKYBwtnw3tbz5BAy1L1OgvbIaY=
 github.com/hashicorp/terraform-plugin-go v0.25.0 h1:oi13cx7xXA6QciMcpcFi/rwA974rdTxjqEhXJjbAyks=
 github.com/hashicorp/terraform-plugin-go v0.25.0/go.mod h1:+SYagMYadJP86Kvn+TGeV+ofr/R3g4/If0O5sO96MVw=
 github.com/hashicorp/terraform-plugin-log v0.9.0 h1:i7hOA+vdAItN1/7UrfBqBwvYPQ9TFvymaRGZED3FCV0=

internal/provider/organization_resource.go

@@ -4,12 +4,14 @@ import (
 	"context"
 	"fmt"
 
+	"github.com/hashicorp/terraform-plugin-framework-validators/stringvalidator"
 	"github.com/hashicorp/terraform-plugin-framework/resource"
 	"github.com/hashicorp/terraform-plugin-framework/resource/schema"
 	"github.com/hashicorp/terraform-plugin-framework/resource/schema/int64planmodifier"
 	"github.com/hashicorp/terraform-plugin-framework/resource/schema/planmodifier"
 	"github.com/hashicorp/terraform-plugin-framework/resource/schema/stringdefault"
 	"github.com/hashicorp/terraform-plugin-framework/resource/schema/stringplanmodifier"
+	"github.com/hashicorp/terraform-plugin-framework/schema/validator"
 	"github.com/hashicorp/terraform-plugin-framework/types"
 	"github.com/hashicorp/terraform-plugin-log/tflog"
 
@@ -110,6 +112,13 @@ func (r *organizationResource) Schema(_ context.Context, _ resource.SchemaReques
 				Optional:    true,
 				Computed:    true,
 				Default:     stringdefault.StaticString("public"),
+				Validators: []validator.String{
+					stringvalidator.OneOf(
+						"public",
+						"limited",
+						"private",
+					),
+				},
 			},
 		},
 	}

internal/provider/repository_resource.go

@@ -4,6 +4,7 @@ import (
 	"context"
 	"fmt"
 
+	"github.com/hashicorp/terraform-plugin-framework-validators/stringvalidator"
 	"github.com/hashicorp/terraform-plugin-framework/attr"
 	"github.com/hashicorp/terraform-plugin-framework/diag"
 	"github.com/hashicorp/terraform-plugin-framework/resource"
@@ -16,6 +17,7 @@ import (
 	"github.com/hashicorp/terraform-plugin-framework/resource/schema/planmodifier"
 	"github.com/hashicorp/terraform-plugin-framework/resource/schema/stringdefault"
 	"github.com/hashicorp/terraform-plugin-framework/resource/schema/stringplanmodifier"
+	"github.com/hashicorp/terraform-plugin-framework/schema/validator"
 	"github.com/hashicorp/terraform-plugin-framework/types"
 	"github.com/hashicorp/terraform-plugin-framework/types/basetypes"
 	"github.com/hashicorp/terraform-plugin-log/tflog"
@@ -828,6 +830,14 @@ func (r *repositoryResource) Schema(_ context.Context, _ resource.SchemaRequest,
 				Optional:    true,
 				Computed:    true,
 				Default:     stringdefault.StaticString(""),
+				Validators: []validator.String{
+					stringvalidator.OneOf(
+						"default",
+						"collaborator",
+						"committer",
+						"collaboratorcommitter",
+					),
+				},
 			},
 		},
 	}