Allow azurerm_function_app to use upper case names in consumption plan (

hashicorp#1835)

* Add repro test case for hashicorp#1765

* Lower-case the content share name to prevent Bad Request

* Add link to the API request as TODO item.

azurerm/resource_arm_function_app.go

@@ -510,6 +510,8 @@ func resourceArmFunctionAppDelete(d *schema.ResourceData, meta interface{}) erro
 }
 
 func getBasicFunctionAppAppSettings(d *schema.ResourceData, appServiceTier string) []web.NameValuePair {
+	// TODO: This is a workaround since there are no public Functions API
+	// You may track the API request here: https://github.com/Azure/azure-rest-api-specs/issues/3750
 	dashboardPropName := "AzureWebJobsDashboard"
 	storagePropName := "AzureWebJobsStorage"
 	functionVersionPropName := "FUNCTIONS_EXTENSION_VERSION"
@@ -518,7 +520,7 @@ func getBasicFunctionAppAppSettings(d *schema.ResourceData, appServiceTier strin
 
 	storageConnection := d.Get("storage_connection_string").(string)
 	functionVersion := d.Get("version").(string)
-	contentShare := d.Get("name").(string) + "-content"
+	contentShare := strings.ToLower(d.Get("name").(string)) + "-content"
 
 	basicSettings := []web.NameValuePair{
 		{Name: &dashboardPropName, Value: &storageConnection},

azurerm/resource_arm_function_app_test.go

@@ -338,6 +338,35 @@ func TestAccAzureRMFunctionApp_consumptionPlan(t *testing.T) {
 	})
 }
 
+func TestAccAzureRMFunctionApp_consumptionPlanUppercaseName(t *testing.T) {
+	resourceName := "azurerm_function_app.test"
+	ri := acctest.RandInt()
+	rs := strings.ToLower(acctest.RandString(11))
+	location := testLocation()
+	config := testAccAzureRMFunctionApp_consumptionPlanUppercaseName(ri, rs, location)
+
+	resource.Test(t, resource.TestCase{
+		PreCheck:     func() { testAccPreCheck(t) },
+		Providers:    testAccProviders,
+		CheckDestroy: testCheckAzureRMFunctionAppDestroy,
+		Steps: []resource.TestStep{
+			{
+				Config: config,
+				Check: resource.ComposeTestCheckFunc(
+					testCheckAzureRMFunctionAppExists(resourceName),
+					testCheckAzureRMFunctionAppHasContentShare(resourceName),
+					resource.TestCheckResourceAttr(resourceName, "site_config.0.use_32_bit_worker_process", "true"),
+				),
+			},
+			{
+				ResourceName:      resourceName,
+				ImportState:       true,
+				ImportStateVerify: true,
+			},
+		},
+	})
+}
+
 func TestAccAzureRMFunctionApp_createIdentity(t *testing.T) {
 	resourceName := "azurerm_function_app.test"
 	ri := acctest.RandInt()
@@ -982,6 +1011,43 @@ resource "azurerm_function_app" "test" {
 `, rInt, location, rString, rInt, rInt)
 }
 
+func testAccAzureRMFunctionApp_consumptionPlanUppercaseName(rInt int, rString string, location string) string {
+	return fmt.Sprintf(`
+resource "azurerm_resource_group" "test" {
+  name     = "acctestRG-%d"
+  location = "%s"
+}
+
+resource "azurerm_storage_account" "test" {
+  name                     = "acctestsa%s"
+  resource_group_name      = "${azurerm_resource_group.test.name}"
+  location                 = "${azurerm_resource_group.test.location}"
+  account_tier             = "Standard"
+  account_replication_type = "LRS"
+}
+
+resource "azurerm_app_service_plan" "test" {
+  name                = "acctestASP-%d"
+  resource_group_name = "${azurerm_resource_group.test.name}"
+  location            = "${azurerm_resource_group.test.location}"
+  kind                = "FunctionApp"
+
+  sku {
+    tier = "Dynamic"
+    size = "Y1"
+  }
+}
+
+resource "azurerm_function_app" "test" {
+  name                      = "acctest-%d-FuncWithUppercase"
+  location                  = "${azurerm_resource_group.test.location}"
+  resource_group_name       = "${azurerm_resource_group.test.name}"
+  app_service_plan_id       = "${azurerm_app_service_plan.test.id}"
+  storage_connection_string = "${azurerm_storage_account.test.primary_connection_string}"
+}
+`, rInt, location, rString, rInt, rInt)
+}
+
 func testAccAzureRMFunctionApp_basicIdentity(rInt int, storage string, location string) string {
 	return fmt.Sprintf(`
 resource "azurerm_resource_group" "test" {