Added CoreDNS plugin setup and replaced forward

upstream/setup_test.go

@@ -0,0 +1,29 @@
+package upstream
+
+import (
+	"github.com/mholt/caddy"
+	"testing"
+)
+
+func TestSetup(t *testing.T) {
+
+	var tests = []struct {
+		config string
+	}{
+		{`upstream 8.8.8.8`},
+		{`upstream 8.8.8.8 {
+	bootstrap 8.8.8.8:53
+}`},
+		{`upstream tls://1.1.1.1 8.8.8.8 {
+	bootstrap 1.1.1.1
+}`},
+	}
+
+	for _, test := range tests {
+		c := caddy.NewTestController("dns", test.config)
+		err := setup(c)
+		if err != nil {
+			t.Fatalf("Test failed")
+		}
+	}
+}