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/config/emitter_test.go

@@ -0,0 +1,95 @@
+// Copyright (c) 2015-present Mattermost, Inc. All Rights Reserved.
+// See LICENSE.txt for license information.
+
+package config
+
+import (
+	"testing"
+
+	"github.com/stretchr/testify/assert"
+
+	"github.com/mattermost/mattermost-server/v6/model"
+	"github.com/mattermost/mattermost-server/v6/server/platform/shared/mlog"
+)
+
+func TestEmitter(t *testing.T) {
+	var e emitter
+
+	expectedOldCfg := &model.Config{}
+	expectedNewCfg := &model.Config{}
+
+	listener1 := false
+	id1 := e.AddListener(func(oldCfg, newCfg *model.Config) {
+		assert.Equal(t, expectedOldCfg, oldCfg)
+		assert.Equal(t, expectedNewCfg, newCfg)
+		listener1 = true
+	})
+
+	listener2 := false
+	id2 := e.AddListener(func(oldCfg, newCfg *model.Config) {
+		assert.Equal(t, expectedOldCfg, oldCfg)
+		assert.Equal(t, expectedNewCfg, newCfg)
+		listener2 = true
+	})
+
+	e.invokeConfigListeners(expectedOldCfg, expectedNewCfg)
+	assert.True(t, listener1, "listener 1 not called")
+	assert.True(t, listener2, "listener 2 not called")
+
+	e.RemoveListener(id2)
+
+	listener1 = false
+	listener2 = false
+	e.invokeConfigListeners(expectedOldCfg, expectedNewCfg)
+	assert.True(t, listener1, "listener 1 not called")
+	assert.False(t, listener2, "listener 2 should not have been called")
+
+	e.RemoveListener(id1)
+
+	listener1 = false
+	listener2 = false
+	e.invokeConfigListeners(expectedOldCfg, expectedNewCfg)
+	assert.False(t, listener1, "listener 1 should not have been called")
+	assert.False(t, listener2, "listener 2 should not have been called")
+}
+
+func TestLogSrcEmitter(t *testing.T) {
+	var e logSrcEmitter
+
+	expectedOldCfg := make(mlog.LoggerConfiguration)
+	expectedNewCfg := make(mlog.LoggerConfiguration)
+
+	listener1 := false
+	id1 := e.AddListener(func(oldCfg, newCfg mlog.LoggerConfiguration) {
+		assert.Equal(t, expectedOldCfg, oldCfg)
+		assert.Equal(t, expectedNewCfg, newCfg)
+		listener1 = true
+	})
+
+	listener2 := false
+	id2 := e.AddListener(func(oldCfg, newCfg mlog.LoggerConfiguration) {
+		assert.Equal(t, expectedOldCfg, oldCfg)
+		assert.Equal(t, expectedNewCfg, newCfg)
+		listener2 = true
+	})
+
+	e.invokeConfigListeners(expectedOldCfg, expectedNewCfg)
+	assert.True(t, listener1, "listener 1 not called")
+	assert.True(t, listener2, "listener 2 not called")
+
+	e.RemoveListener(id2)
+
+	listener1 = false
+	listener2 = false
+	e.invokeConfigListeners(expectedOldCfg, expectedNewCfg)
+	assert.True(t, listener1, "listener 1 not called")
+	assert.False(t, listener2, "listener 2 should not have been called")
+
+	e.RemoveListener(id1)
+
+	listener1 = false
+	listener2 = false
+	e.invokeConfigListeners(expectedOldCfg, expectedNewCfg)
+	assert.False(t, listener1, "listener 1 should not have been called")
+	assert.False(t, listener2, "listener 2 should not have been called")
+}