Mono repo -> Master (#22553)

Combines the following repositories into one:

https://github.com/mattermost/mattermost-server
https://github.com/mattermost/mattermost-webapp
https://github.com/mattermost/focalboard
https://github.com/mattermost/mattermost-plugin-playbooks

server/channels/store/sqlstore/adapters_test.go

@@ -0,0 +1,21 @@
+// Copyright (c) 2015-present Mattermost, Inc. All Rights Reserved.
+// See LICENSE.txt for license information.
+
+package sqlstore
+
+import (
+	"testing"
+
+	"github.com/stretchr/testify/assert"
+	"github.com/stretchr/testify/require"
+)
+
+func TestJSONArray(t *testing.T) {
+	input := []string{"a", "b"}
+
+	out, err := jsonArray(input).Value()
+	require.NoError(t, err)
+	outBuf, ok := out.([]byte)
+	require.True(t, ok)
+	assert.Equal(t, []byte(`["a","b"]`), outBuf)
+}