Add support for auto-generated keys

The key doesn't need to be provided, in which case the plugin generates
one for us.  So mark the property as `computed` and add a test which
checks that we get a value returned.

Author: andrew-bulford-form3

kong/resource_kong_consumer_key_auth.go

@@ -24,6 +24,7 @@ func resourceKongConsumerKeyAuth() *schema.Resource {
 			"key": {
 				Type:      schema.TypeString,
 				Optional:  true,
+				Computed:  true,
 				ForceNew:  false,
 				Sensitive: true,
 			},

kong/resource_kong_consumer_key_auth_test.go

@@ -39,6 +39,35 @@ func TestAccConsumerKeyAuth(t *testing.T) {
 	})
 }
 
+func TestAccConsumerKeyAuthComputed(t *testing.T) {
+
+	resource.Test(t, resource.TestCase{
+		Providers:    testAccProviders,
+		CheckDestroy: testAccCheckConsumerKeyAuthDestroy,
+		Steps: []resource.TestStep{
+			{
+				Config: testCreateConsumerKeyAuthConfigKeyComputed,
+				Check: resource.ComposeTestCheckFunc(
+					testAccCheckConsumerKeyAuthExists("kong_consumer_key_auth.consumer_key_auth"),
+					resource.TestCheckResourceAttrSet("kong_consumer_key_auth.consumer_key_auth", "key"),
+					resource.TestCheckResourceAttr("kong_consumer_key_auth.consumer_key_auth", "tags.#", "1"),
+					resource.TestCheckResourceAttr("kong_consumer_key_auth.consumer_key_auth", "tags.0", "myTag"),
+				),
+			},
+			{
+				Config: testUpdateConsumerKeyAuthConfig,
+				Check: resource.ComposeTestCheckFunc(
+					testAccCheckConsumerKeyAuthExists("kong_consumer_key_auth.consumer_key_auth"),
+					resource.TestCheckResourceAttr("kong_consumer_key_auth.consumer_key_auth", "key", "foo_updated"),
+					resource.TestCheckResourceAttr("kong_consumer_key_auth.consumer_key_auth", "tags.#", "2"),
+					resource.TestCheckResourceAttr("kong_consumer_key_auth.consumer_key_auth", "tags.0", "myTag"),
+					resource.TestCheckResourceAttr("kong_consumer_key_auth.consumer_key_auth", "tags.1", "anotherTag"),
+				),
+			},
+		},
+	})
+}
+
 func testAccCheckConsumerKeyAuthDestroy(state *terraform.State) error {
 
 	client := testAccProvider.Meta().(*config).adminClient.KeyAuths
@@ -125,3 +154,18 @@ resource "kong_consumer_key_auth" "consumer_key_auth" {
 	tags        = ["myTag", "anotherTag"]
 }
 `
+const testCreateConsumerKeyAuthConfigKeyComputed = `
+resource "kong_consumer" "my_consumer" {
+	username  = "User1"
+	custom_id = "123"
+}
+
+resource "kong_plugin" "key_auth_plugin" {
+	name = "key-auth"
+}
+
+resource "kong_consumer_key_auth" "consumer_key_auth" {
+	consumer_id = "${kong_consumer.my_consumer.id}"
+	tags        = ["myTag"]
+}
+`