Update firebase_database_instance docs and samples for region

.changelog/7106.txt

@@ -0,0 +1,3 @@
+```release-note:none
+Updates description for firebase_database_instance.region
+```

google-beta/resource_firebase_database_instance.go

@@ -79,10 +79,11 @@ func resourceFirebaseDatabaseInstance() *schema.Resource {
 Instance IDs cannot be reused after deletion.`,
 			},
 			"region": {
-				Type:        schema.TypeString,
-				Required:    true,
-				ForceNew:    true,
-				Description: `A reference to the region where the Firebase Realtime database resides.`,
+				Type:     schema.TypeString,
+				Required: true,
+				ForceNew: true,
+				Description: `A reference to the region where the Firebase Realtime database resides.
+Check all [available regions](https://firebase.google.com/docs/projects/locations#rtdb-locations)`,
 			},
 			"type": {
 				Type:         schema.TypeString,

google-beta/resource_firebase_database_instance_generated_test.go

@@ -23,12 +23,11 @@ import (
 	"github.com/hashicorp/terraform-plugin-sdk/v2/terraform"
 )
 
-func TestAccFirebaseDatabaseInstance_firebaseDatabaseInstanceExample(t *testing.T) {
+func TestAccFirebaseDatabaseInstance_firebaseDatabaseInstanceBasicExample(t *testing.T) {
 	t.Parallel()
 
 	context := map[string]interface{}{
 		"project_id":    getTestProjectFromEnv(),
-		"region":        getTestRegionFromEnv(),
 		"random_suffix": randString(t, 10),
 	}
 
@@ -38,7 +37,7 @@ func TestAccFirebaseDatabaseInstance_firebaseDatabaseInstanceExample(t *testing.
 		CheckDestroy: testAccCheckFirebaseDatabaseInstanceDestroyProducer(t),
 		Steps: []resource.TestStep{
 			{
-				Config: testAccFirebaseDatabaseInstance_firebaseDatabaseInstanceExample(context),
+				Config: testAccFirebaseDatabaseInstance_firebaseDatabaseInstanceBasicExample(context),
 			},
 			{
 				ResourceName:            "google_firebase_database_instance.basic",
@@ -50,23 +49,22 @@ func TestAccFirebaseDatabaseInstance_firebaseDatabaseInstanceExample(t *testing.
 	})
 }
 
-func testAccFirebaseDatabaseInstance_firebaseDatabaseInstanceExample(context map[string]interface{}) string {
+func testAccFirebaseDatabaseInstance_firebaseDatabaseInstanceBasicExample(context map[string]interface{}) string {
 	return Nprintf(`
 resource "google_firebase_database_instance" "basic" {
   provider = google-beta
   project  = "%{project_id}"
-  region   = "%{region}"
+  region   = "us-central1"
   instance_id = "tf-test-active-db%{random_suffix}"
 }
 `, context)
 }
 
-func TestAccFirebaseDatabaseInstance_firebaseDatabaseInstanceDisabledExample(t *testing.T) {
+func TestAccFirebaseDatabaseInstance_firebaseDatabaseInstanceFullExample(t *testing.T) {
 	t.Parallel()
 
 	context := map[string]interface{}{
 		"project_id":    getTestProjectFromEnv(),
-		"region":        getTestRegionFromEnv(),
 		"random_suffix": randString(t, 10),
 	}
 
@@ -76,7 +74,7 @@ func TestAccFirebaseDatabaseInstance_firebaseDatabaseInstanceDisabledExample(t *
 		CheckDestroy: testAccCheckFirebaseDatabaseInstanceDestroyProducer(t),
 		Steps: []resource.TestStep{
 			{
-				Config: testAccFirebaseDatabaseInstance_firebaseDatabaseInstanceDisabledExample(context),
+				Config: testAccFirebaseDatabaseInstance_firebaseDatabaseInstanceFullExample(context),
 			},
 			{
 				ResourceName:            "google_firebase_database_instance.full",
@@ -88,25 +86,24 @@ func TestAccFirebaseDatabaseInstance_firebaseDatabaseInstanceDisabledExample(t *
 	})
 }
 
-func testAccFirebaseDatabaseInstance_firebaseDatabaseInstanceDisabledExample(context map[string]interface{}) string {
+func testAccFirebaseDatabaseInstance_firebaseDatabaseInstanceFullExample(context map[string]interface{}) string {
 	return Nprintf(`
 resource "google_firebase_database_instance" "full" {
   provider = google-beta
   project  = "%{project_id}"
-  region   = "%{region}"
+  region   = "europe-west1"
   instance_id = "tf-test-disabled-db%{random_suffix}"
   type     = "USER_DATABASE"
   desired_state   = "DISABLED"
 }
 `, context)
 }
 
-func TestAccFirebaseDatabaseInstance_firebaseDatabaseInstanceDefaultExample(t *testing.T) {
+func TestAccFirebaseDatabaseInstance_firebaseDatabaseInstanceDefaultDatabaseExample(t *testing.T) {
 	t.Parallel()
 
 	context := map[string]interface{}{
 		"org_id":        getTestOrgFromEnv(t),
-		"region":        getTestRegionFromEnv(),
 		"random_suffix": randString(t, 10),
 	}
 
@@ -116,7 +113,7 @@ func TestAccFirebaseDatabaseInstance_firebaseDatabaseInstanceDefaultExample(t *t
 		CheckDestroy: testAccCheckFirebaseDatabaseInstanceDestroyProducer(t),
 		Steps: []resource.TestStep{
 			{
-				Config: testAccFirebaseDatabaseInstance_firebaseDatabaseInstanceDefaultExample(context),
+				Config: testAccFirebaseDatabaseInstance_firebaseDatabaseInstanceDefaultDatabaseExample(context),
 			},
 			{
 				ResourceName:            "google_firebase_database_instance.default",
@@ -128,7 +125,7 @@ func TestAccFirebaseDatabaseInstance_firebaseDatabaseInstanceDefaultExample(t *t
 	})
 }
 
-func testAccFirebaseDatabaseInstance_firebaseDatabaseInstanceDefaultExample(context map[string]interface{}) string {
+func testAccFirebaseDatabaseInstance_firebaseDatabaseInstanceDefaultDatabaseExample(context map[string]interface{}) string {
 	return Nprintf(`
 resource "google_project" "default" {
   provider = google-beta
@@ -154,9 +151,10 @@ resource "google_project_service" "firebase_database" {
 resource "google_firebase_database_instance" "default" {
   provider = google-beta
   project  = google_firebase_project.default.project
-  region   = "%{region}"
+  region   = "us-central1"
   instance_id = "tf-test-rtdb-project%{random_suffix}-default-rtdb"
   type     = "DEFAULT_DATABASE"
+  depends_on = [google_project_service.firebase_database]
 }
 `, context)
 }

website/docs/r/firebase_database_instance.html.markdown

@@ -31,31 +31,31 @@ To get more information about Instance, see:
 * How-to Guides
     * [Official Documentation](https://firebase.google.com/products/realtime-database)
 
-## Example Usage - Firebase Database Instance
+## Example Usage - Firebase Database Instance Basic
 
 
 ```hcl
 resource "google_firebase_database_instance" "basic" {
   provider = google-beta
   project  = "my-project-name"
-  region   = "us-west1"
+  region   = "us-central1"
   instance_id = "active-db"
 }
 ```
-## Example Usage - Firebase Database Instance Disabled
+## Example Usage - Firebase Database Instance Full
 
 
 ```hcl
 resource "google_firebase_database_instance" "full" {
   provider = google-beta
   project  = "my-project-name"
-  region   = "us-west1"
+  region   = "europe-west1"
   instance_id = "disabled-db"
   type     = "USER_DATABASE"
   desired_state   = "DISABLED"
 }
 ```
-## Example Usage - Firebase Database Instance Default
+## Example Usage - Firebase Database Instance Default Database
 
 
 ```hcl
@@ -83,9 +83,10 @@ resource "google_project_service" "firebase_database" {
 resource "google_firebase_database_instance" "default" {
   provider = google-beta
   project  = google_firebase_project.default.project
-  region   = "us-west1"
+  region   = "us-central1"
   instance_id = "rtdb-project-default-rtdb"
   type     = "DEFAULT_DATABASE"
+  depends_on = [google_project_service.firebase_database]
 }
 ```
 
@@ -97,6 +98,7 @@ The following arguments are supported:
 * `region` -
   (Required)
   A reference to the region where the Firebase Realtime database resides.
+  Check all [available regions](https://firebase.google.com/docs/projects/locations#rtdb-locations)
 
 * `instance_id` -
   (Required)