Update circle-ci config

tests/mysql/generator_test.go

@@ -35,12 +35,7 @@ func TestGenerator(t *testing.T) {
 }
 
 func TestCmdGenerator(t *testing.T) {
-	goInstallJet := exec.Command("sh", "-c", "cd $GOPATH/src/ && GO111MODULE=off go get github.com/go-jet/jet/cmd/jet")
-	goInstallJet.Stderr = os.Stderr
-	err := goInstallJet.Run()
-	require.NoError(t, err)
-
-	err = os.RemoveAll(genTestDir3)
+	err := os.RemoveAll(genTestDir3)
 	require.NoError(t, err)
 
 	cmd := exec.Command("jet", "-source=MySQL", "-dbname=dvds", "-host=localhost", "-port=3306",

tests/mysql/main_test.go

@@ -3,7 +3,6 @@ package mysql
 import (
 	"context"
 	"database/sql"
-	"flag"
 	jetmysql "github.com/go-jet/jet/v2/mysql"
 	"github.com/go-jet/jet/v2/postgres"
 	"github.com/go-jet/jet/v2/tests/dbconfig"
@@ -25,8 +24,7 @@ var source string
 const MariaDB = "MariaDB"
 
 func init() {
-	flag.StringVar(&source, "source", "", "MySQL or MariaDB")
-	flag.Parse()
+	source = os.Getenv("MY_SQL_SOURCE")
 }
 
 func sourceIsMariaDB() bool {

tests/postgres/generator_test.go

@@ -46,12 +46,7 @@ func TestGeneratedModel(t *testing.T) {
 const genTestDir2 = "./.gentestdata2"
 
 func TestCmdGenerator(t *testing.T) {
-	goInstallJet := exec.Command("sh", "-c", "cd $GOPATH/src/ && GO111MODULE=off go get github.com/go-jet/jet/cmd/jet")
-	goInstallJet.Stderr = os.Stderr
-	err := goInstallJet.Run()
-	require.NoError(t, err)
-
-	err = os.RemoveAll(genTestDir2)
+	err := os.RemoveAll(genTestDir2)
 	require.NoError(t, err)
 
 	cmd := exec.Command("jet", "-source=PostgreSQL", "-dbname=jetdb", "-host=localhost", "-port=5432",