build: mysql integration testing on ci.

.circleci/config.yml

@@ -12,6 +12,26 @@ aliases:
 version: 2
 
 jobs:
+  mysql-integration-test:
+    docker:
+      - image: circleci/golang:1.10
+      - image: circleci/mysql:5.6-ram
+        environment:
+          MYSQL_ROOT_PASSWORD: rootpass
+          MYSQL_DATABASE: grafana_tests
+          MYSQL_USER: grafana
+          MYSQL_PASSWORD: password
+    working_directory: /go/src/github.com/grafana/grafana
+    steps:
+        - checkout
+        - run: sudo apt update
+        - run: sudo apt install -y mysql-client
+        - run: dockerize -wait tcp://127.0.0.1:3306 -timeout 120s
+        - run: cat docker/blocks/mysql_tests/setup.sql | mysql -h 127.0.0.1 -P 3306 -u root -prootpass
+        - run:
+            name: mysql integration tests
+            command: 'GRAFANA_TEST_DB=mysql go test ./pkg/...'
+
   codespell:
     docker:
       - image: circleci/python
@@ -188,6 +208,8 @@ workflows:
           filters: *filter-not-release
       - test-backend:
           filters: *filter-not-release
+      - mysql-integration-test:
+          filters: *filter-not-release
       - deploy-master:
           requires:
             - build-all
@@ -195,6 +217,7 @@ workflows:
             - test-frontend
             - codespell
             - gometalinter
+            - mysql-integration-test
           filters:
             branches:
               only: master
@@ -210,6 +233,8 @@ workflows:
           filters: *filter-only-release
       - test-backend:
           filters: *filter-only-release
+      - mysql-integration-test:
+          filters: *filter-only-release
       - deploy-release:
           requires:
             - build-all
@@ -217,4 +242,5 @@ workflows:
             - test-frontend
             - codespell
             - gometalinter
+            - mysql-integration-test
           filters: *filter-only-release

docker/blocks/mysql/docker-compose.yaml

@@ -1,5 +1,5 @@
   mysql:
-    image: mysql:latest
+    image: mysql:5.6
     environment:
       MYSQL_ROOT_PASSWORD: rootpass
       MYSQL_DATABASE: grafana

docker/blocks/mysql_tests/Dockerfile

@@ -1,3 +1,3 @@
-FROM mysql:latest
+FROM mysql:5.6
 ADD setup.sql /docker-entrypoint-initdb.d
-CMD ["mysqld"]
+CMD ["mysqld"]

pkg/tsdb/mysql/mysql_test.go

@@ -601,7 +601,7 @@ func TestMySQL(t *testing.T) {
 					Queries: []*tsdb.Query{
 						{
 							Model: simplejson.NewFromAny(map[string]interface{}{
-								"rawSql": `SELECT $__time(time), CONCAT(measurement, ' - value one') as metric, valueOne FROM metric_values ORDER BY 1`,
+								"rawSql": `SELECT $__time(time), CONCAT(measurement, ' - value one') as metric, valueOne FROM metric_values ORDER BY 1,2`,
 								"format": "time_series",
 							}),
 							RefId: "A",
@@ -615,8 +615,8 @@ func TestMySQL(t *testing.T) {
 				So(queryResult.Error, ShouldBeNil)
 
 				So(len(queryResult.Series), ShouldEqual, 2)
-				So(queryResult.Series[0].Name, ShouldEqual, "Metric B - value one")
-				So(queryResult.Series[1].Name, ShouldEqual, "Metric A - value one")
+				So(queryResult.Series[0].Name, ShouldEqual, "Metric A - value one")
+				So(queryResult.Series[1].Name, ShouldEqual, "Metric B - value one")
 			})
 
 			Convey("When doing a metric query grouping by time should return correct series", func() {