MXS-1300: Test calling of module commands via MaxCtrl

The calling of module commands is tested by using the qlafilter log
command.

maxctrl/test/call.js

@@ -0,0 +1,24 @@
+require('../test_utils.js')()
+
+describe("Module Commands", function() {
+    before(startMaxScale)
+
+    it('call command', function() {
+        return doCommand('call command qlafilter log QLA')
+            .then(function(output) {
+                JSON.parse(output).meta.should.have.lengthOf(1)
+            })
+    })
+
+    it('call command with missing parameters', function() {
+        return doCommand('call command qlafilter log')
+            .should.be.rejected
+    })
+
+    it('call command with too many parameters', function() {
+        return doCommand('call command qlafilter log QLA too many arguments for this command')
+            .should.be.rejected
+    })
+
+    after(stopMaxScale)
+});

test/maxscale_test.cnf

@@ -49,6 +49,7 @@ router_options=master
 servers=server1
 user=maxuser
 passwd=maxpwd
+filters=QLA
 
 [Hint]
 type=filter
@@ -69,6 +70,14 @@ type=filter
 module=tee
 service=RW Split Hint Router
 
+[QLA]
+type=filter
+module=qlafilter
+log_type=unified
+append=false
+flush=true
+filebase=/tmp/qla.log
+
 [CLI]
 type=service
 router=cli