PLT-6115 adding unit tests for licensing (#5916)

* Adding test to license sql store

* PLT-6115 adding unit tests for licensing

* Removing unused test

app/license_test.go

@@ -0,0 +1,37 @@
+// Copyright (c) 2016 Mattermost, Inc. All Rights Reserved.
+// See License.txt for license information.
+
+package app
+
+import (
+	//"github.com/mattermost/platform/model"
+	"github.com/mattermost/platform/utils"
+	"testing"
+)
+
+func TestLoadLicense(t *testing.T) {
+	Setup()
+
+	LoadLicense()
+	if utils.IsLicensed {
+		t.Fatal("shouldn't have a valid license")
+	}
+}
+
+func TestSaveLicense(t *testing.T) {
+	Setup()
+
+	b1 := []byte("junk")
+
+	if _, err := SaveLicense(b1); err == nil {
+		t.Fatal("shouldn't have saved license")
+	}
+}
+
+func TestRemoveLicense(t *testing.T) {
+	Setup()
+
+	if err := RemoveLicense(); err != nil {
+		t.Fatal("should have removed license")
+	}
+}