fix: Try to reproduce 2679 and 3117

docs/resources/stage.md

@@ -41,7 +41,7 @@ resource "snowflake_stage" "example_stage" {
 - `credentials` (String, Sensitive) Specifies the credentials for the stage.
 - `directory` (String) Specifies the directory settings for the stage.
 - `encryption` (String) Specifies the encryption settings for the stage.
-- `file_format` (String) Specifies the file format for the stage.
+- `file_format` (String) Specifies the file format for the stage. Specifying the default Snowflake value (e.g. TYPE = CSV) will currently result in a permadiff (check [#2679](https://github.com/Snowflake-Labs/terraform-provider-snowflake/issues/2679)). For now, omit the default values; it will be fixed in the upcoming provider versions.
 - `snowflake_iam_user` (String) An AWS IAM user created for your Snowflake account. This user is the same for every external S3 stage created in your account.
 - `storage_integration` (String) Specifies the name of the storage integration used to delegate authentication responsibility for external cloud storage to a Snowflake identity and access management (IAM) entity.
 - `tag` (Block List, Deprecated) Definitions of a tag to associate with the resource. (see [below for nested schema](#nestedblock--tag))

pkg/acceptance/helpers/stage_client.go

@@ -136,3 +136,10 @@ func (c *StageClient) Rename(t *testing.T, id sdk.SchemaObjectIdentifier, newId
 	err := c.client().Alter(ctx, sdk.NewAlterStageRequest(id).WithRenameTo(&newId))
 	require.NoError(t, err)
 }
+
+func (c *StageClient) Describe(t *testing.T, id sdk.SchemaObjectIdentifier) ([]sdk.StageProperty, error) {
+	t.Helper()
+	ctx := context.Background()
+
+	return c.client().Describe(ctx, id)
+}

pkg/resources/alert_acceptance_test.go

@@ -10,6 +10,7 @@ import (
 	acc "github.com/Snowflake-Labs/terraform-provider-snowflake/pkg/acceptance"
 
 	"github.com/Snowflake-Labs/terraform-provider-snowflake/pkg/provider/resources"
+	"github.com/Snowflake-Labs/terraform-provider-snowflake/pkg/sdk"
 	"github.com/hashicorp/terraform-plugin-testing/helper/resource"
 	"github.com/hashicorp/terraform-plugin-testing/tfversion"
 )
@@ -202,3 +203,58 @@ resource "snowflake_alert" "test_alert" {
 	}
 	return result.String()
 }
+
+// Can't reproduce the issue, leaving the test for now.
+func TestAcc_Alert_Issue3117(t *testing.T) {
+	id := acc.TestClient().Ids.RandomSchemaObjectIdentifierWithPrefix("small caps with spaces")
+
+	resource.Test(t, resource.TestCase{
+		PreCheck: func() { acc.TestAccPreCheck(t) },
+		TerraformVersionChecks: []tfversion.TerraformVersionCheck{
+			tfversion.RequireAbove(tfversion.Version1_5_0),
+		},
+		CheckDestroy: acc.CheckDestroy(t, resources.Alert),
+		Steps: []resource.TestStep{
+			{
+				ExternalProviders: map[string]resource.ExternalProvider{
+					"snowflake": {
+						VersionConstraint: "=0.92.0",
+						Source:            "Snowflake-Labs/snowflake",
+					},
+				},
+				Config: alertIssue3117Config(id, acc.TestClient().Ids.WarehouseId()),
+				Check: resource.ComposeTestCheckFunc(
+					resource.TestCheckResourceAttr("snowflake_alert.test_alert", "name", id.Name()),
+				),
+			},
+			{
+				ProtoV6ProviderFactories: acc.TestAccProtoV6ProviderFactories,
+				Config:                   alertIssue3117Config(id, acc.TestClient().Ids.WarehouseId()),
+				Check: resource.ComposeTestCheckFunc(
+					resource.TestCheckResourceAttr("snowflake_alert.test_alert", "name", id.Name()),
+				),
+			},
+		},
+	})
+}
+
+func alertIssue3117Config(alertId sdk.SchemaObjectIdentifier, warehouseId sdk.AccountObjectIdentifier) string {
+	return fmt.Sprintf(`
+resource "snowflake_alert" "test_alert" {
+  database  = "%[1]s"
+  schema    = "%[2]s"
+  name      = "%[3]s"
+  warehouse = "%[4]s"
+
+  alert_schedule {
+    interval = 1 #check every minute for new alerts
+  }
+
+  action    = "select 0 as c"
+  condition = "select 0 as c"
+
+  enabled   = true
+  comment   = "Alert config for GH issue 3117"
+}
+`, alertId.DatabaseName(), alertId.SchemaName(), alertId.Name(), warehouseId.Name())
+}

pkg/resources/stage.go

@@ -54,7 +54,7 @@ var stageSchema = map[string]*schema.Schema{
 	"file_format": {
 		Type:             schema.TypeString,
 		Optional:         true,
-		Description:      "Specifies the file format for the stage.",
+		Description:      "Specifies the file format for the stage. Specifying the default Snowflake value (e.g. TYPE = CSV) will currently result in a permadiff (check [#2679](https://github.com/Snowflake-Labs/terraform-provider-snowflake/issues/2679)). For now, omit the default values; it will be fixed in the upcoming provider versions.",
 		DiffSuppressFunc: suppressQuoting,
 	},
 	"copy_options": {

pkg/resources/stage_acceptance_test.go

@@ -5,15 +5,17 @@ import (
 	"testing"
 
 	acc "github.com/Snowflake-Labs/terraform-provider-snowflake/pkg/acceptance"
-	"github.com/Snowflake-Labs/terraform-provider-snowflake/pkg/sdk"
 
 	"github.com/Snowflake-Labs/terraform-provider-snowflake/pkg/acceptance/helpers/random"
 	"github.com/Snowflake-Labs/terraform-provider-snowflake/pkg/acceptance/ids"
 	"github.com/Snowflake-Labs/terraform-provider-snowflake/pkg/acceptance/testenvs"
+	"github.com/Snowflake-Labs/terraform-provider-snowflake/pkg/internal/collections"
 	"github.com/Snowflake-Labs/terraform-provider-snowflake/pkg/provider/resources"
+	"github.com/Snowflake-Labs/terraform-provider-snowflake/pkg/sdk"
 	"github.com/hashicorp/terraform-plugin-testing/config"
 	"github.com/hashicorp/terraform-plugin-testing/helper/resource"
 	"github.com/hashicorp/terraform-plugin-testing/plancheck"
+	"github.com/hashicorp/terraform-plugin-testing/terraform"
 	"github.com/hashicorp/terraform-plugin-testing/tfversion"
 )
 
@@ -255,3 +257,80 @@ resource "snowflake_stage" "test" {
 }
 `, stageId.Name(), stageId.DatabaseName(), stageId.SchemaName())
 }
+
+// TODO [SNOW-1348110]: fix behavior with stage rework
+func TestAcc_Stage_Issue2679(t *testing.T) {
+	integrationId := acc.TestClient().Ids.RandomAccountObjectIdentifier()
+	stageId := acc.TestClient().Ids.RandomSchemaObjectIdentifier()
+	resourceName := "snowflake_stage.test"
+
+	fileFormatWithDefaultTypeCsv := "TYPE = CSV NULL_IF = []"
+	fileFormatWithoutType := "NULL_IF = []"
+
+	resource.Test(t, resource.TestCase{
+		ProtoV6ProviderFactories: acc.TestAccProtoV6ProviderFactories,
+		PreCheck:                 func() { acc.TestAccPreCheck(t) },
+		TerraformVersionChecks: []tfversion.TerraformVersionCheck{
+			tfversion.RequireAbove(tfversion.Version1_5_0),
+		},
+		CheckDestroy: acc.CheckDestroy(t, resources.Stage),
+		Steps: []resource.TestStep{
+			{
+				Config: stageIssue2679Config(integrationId, stageId, fileFormatWithDefaultTypeCsv),
+				Check: resource.ComposeTestCheckFunc(
+					resource.TestCheckResourceAttr(resourceName, "name", stageId.Name()),
+				),
+				ExpectNonEmptyPlan: true,
+			},
+			{
+				ConfigPlanChecks: resource.ConfigPlanChecks{
+					PreApply: []plancheck.PlanCheck{
+						plancheck.ExpectEmptyPlan(),
+					},
+				},
+				Config: stageIssue2679Config(integrationId, stageId, fileFormatWithoutType),
+				Check: resource.ComposeTestCheckFunc(
+					resource.TestCheckResourceAttr(resourceName, "name", stageId.Name()),
+					// TODO [SNOW-1348110]: use generated assertions after stage rework
+					func(_ *terraform.State) error {
+						properties, err := acc.TestClient().Stage.Describe(t, stageId)
+						if err != nil {
+							return err
+						}
+						typeProperty, err := collections.FindFirst(properties, func(property sdk.StageProperty) bool {
+							return property.Parent == "STAGE_FILE_FORMAT" && property.Name == "TYPE"
+						})
+						if err != nil {
+							return err
+						}
+						if typeProperty.Value != "CSV" {
+							return fmt.Errorf("expected type property 'CSV', got '%s'", typeProperty.Value)
+						}
+						return nil
+					},
+				),
+			},
+		},
+	})
+}
+
+func stageIssue2679Config(integrationId sdk.AccountObjectIdentifier, stageId sdk.SchemaObjectIdentifier, fileFormat string) string {
+	return fmt.Sprintf(`
+resource "snowflake_storage_integration" "test" {
+	name = "%[1]s"
+	storage_allowed_locations = ["s3://aaaaa"]
+	storage_provider = "S3"
+
+	storage_aws_role_arn = "arn:aws:iam::000000000001:/role/test"
+}
+
+resource "snowflake_stage" "test" {
+	name = "%[2]s"
+	database = "%[3]s"
+	schema = "%[4]s"
+	file_format = "%[5]s"
+	storage_integration = snowflake_storage_integration.test.name
+	url = "s3://aaaaa"
+}
+`, integrationId.Name(), stageId.Name(), stageId.DatabaseName(), stageId.SchemaName(), fileFormat)
+}

pkg/sdk/testint/warehouses_integration_test.go

@@ -335,7 +335,7 @@ func TestInt_Warehouses(t *testing.T) {
 		returnedWarehouse, err := client.Warehouses.ShowByID(ctx, warehouse.ID())
 		require.NoError(t, err)
 		assert.Equal(t, sdk.WarehouseTypeStandard, returnedWarehouse.Type)
-		assert.Equal(t, sdk.WarehouseStateStarted, returnedWarehouse.State)
+		require.Eventually(t, func() bool { return sdk.WarehouseStateStarted == returnedWarehouse.State }, 5*time.Second, time.Second)
 
 		alterOptions := &sdk.AlterWarehouseOptions{
 			Set: &sdk.WarehouseSet{WarehouseType: sdk.Pointer(sdk.WarehouseTypeSnowparkOptimized)},