PLT-7537: Move channel CLI command posts system message to channel. (#8161)

* [PTL-7537] implement feature and test

* [PTL-7537] Update feature to post the the room requiring a username flag to be used

* [PTL-7537] update tests with username

* update test to remove changes to the test helper struct

* use the basic team and user

cmd/platform/channel_test.go

@@ -44,6 +44,33 @@ func TestRemoveChannel(t *testing.T) {
 	checkCommand(t, "channel", "remove", th.BasicTeam.Name+":"+channel.Name, th.BasicUser2.Email)
 }
 
+func TestMoveChannel(t *testing.T) {
+	th := api.Setup().InitBasic()
+	defer th.TearDown()
+
+	client := th.BasicClient
+	team1 := th.BasicTeam
+	team2 := th.CreateTeam(client)
+	user1 := th.BasicUser
+	th.LinkUserToTeam(user1, team2)
+	channel := th.BasicChannel
+
+	th.LinkUserToTeam(user1, team1)
+	th.LinkUserToTeam(user1, team2)
+
+	adminEmail := user1.Email
+	adminUsername := user1.Username
+	origin := team1.Name + ":" + channel.Name
+	dest := team2.Name
+
+	checkCommand(t, "channel", "add", origin, adminEmail)
+
+	// should fail with nill because errors are logged instead of returned when a channel does not exist
+	require.Nil(t, runCommand(t, "channel", "move", dest, team1.Name+":doesnotexist", "--username", adminUsername))
+
+	checkCommand(t, "channel", "move", dest, origin, "--username", adminUsername)
+}
+
 func TestListChannels(t *testing.T) {
 	th := api.Setup().InitBasic()
 	defer th.TearDown()