mysql/rdsmysql: add integration tests (#540)

mysql/rdsmysql/main.tf

@@ -0,0 +1,98 @@
+# Copyright 2018 Google LLC
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     https://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+# Harness for MySQL tests.
+
+terraform {
+  required_version = "~>0.11"
+}
+
+provider "aws" {
+  version = "~> 1.22"
+  region  = "${var.region}"
+}
+
+provider "random" {
+  version = "~> 1.3"
+}
+
+variable "region" {
+  type        = "string"
+  description = "Region to create resources in. See https://docs.aws.amazon.com/AmazonRDS/latest/UserGuide/Concepts.RegionsAndAvailabilityZones.html for valid values."
+}
+
+resource "aws_security_group" "main" {
+  name_prefix = "testdb"
+  description = "Security group for Go Cloud MySQL test database."
+
+  ingress {
+    from_port   = 3306
+    to_port     = 3306
+    protocol    = "tcp"
+    cidr_blocks = ["0.0.0.0/0"]
+    description = "Public MySQL access"
+  }
+
+  egress {
+    from_port   = 0
+    to_port     = 0
+    protocol    = "-1"
+    cidr_blocks = ["0.0.0.0/0"]
+    description = "All outgoing traffic allowed"
+  }
+}
+
+resource "random_string" "db_password" {
+  keepers = {
+    region = "${var.region}"
+  }
+
+  special = false
+  length  = 20
+}
+
+resource "aws_db_instance" "main" {
+  identifier_prefix      = "go-cloud-test"
+  engine                 = "mysql"
+  engine_version         = "5.6.39"
+  instance_class         = "db.t2.micro"
+  allocated_storage      = 20
+  username               = "root"
+  password               = "${random_string.db_password.result}"
+  name                   = "testdb"
+  publicly_accessible    = true
+  vpc_security_group_ids = ["${aws_security_group.main.id}"]
+  skip_final_snapshot    = true
+}
+
+output "endpoint" {
+  value       = "${aws_db_instance.main.endpoint}"
+  description = "The RDS instance's host/port."
+}
+
+output "username" {
+  value       = "root"
+  description = "The MySQL username to connect with."
+}
+
+output "password" {
+  value       = "${random_string.db_password.result}"
+  sensitive   = true
+  description = "The RDS instance password for the user."
+}
+
+output "database" {
+  value       = "testdb"
+  description = "The name of the database inside the RDS instance."
+}

mysql/rdsmysql/rdsmysql_test.go

@@ -0,0 +1,60 @@
+// Copyright 2018 Google LLC
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     https://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package rdsmysql
+
+import (
+	"context"
+	"testing"
+
+	"github.com/google/go-cloud/internal/testing/terraform"
+)
+
+func TestOpen(t *testing.T) {
+	// This test will be skipped unless the project is set up with Terraform.
+	// Before running go test, run in this directory:
+	//
+	// terraform init
+	// terraform apply
+
+	tfOut, err := terraform.ReadOutput(".")
+	if err != nil {
+		t.Skipf("Could not obtain harness info: %v", err)
+	}
+	endpoint, _ := tfOut["endpoint"].Value.(string)
+	username, _ := tfOut["username"].Value.(string)
+	password, _ := tfOut["password"].Value.(string)
+	databaseName, _ := tfOut["database"].Value.(string)
+	if endpoint == "" || username == "" || databaseName == "" {
+		t.Fatalf("Missing one or more required Terraform outputs; got endpoint=%q username=%q database=%q", endpoint, username, databaseName)
+	}
+
+	ctx := context.Background()
+	cf := new(CertFetcher)
+	db, _, err := Open(ctx, cf, &Params{
+		Endpoint: endpoint,
+		User:     username,
+		Password: password,
+		Database: databaseName,
+	})
+	if err != nil {
+		t.Fatal(err)
+	}
+	if err := db.Ping(); err != nil {
+		t.Error("Ping:", err)
+	}
+	if err := db.Close(); err != nil {
+		t.Error("Close:", err)
+	}
+}