diff --git a/phpfpm/phpfpm_test.go b/phpfpm/phpfpm_test.go
new file mode 100644
index 0000000..c858396
--- /dev/null
+++ b/phpfpm/phpfpm_test.go
@@ -0,0 +1,95 @@
+// Copyright © 2018 Enrico Stahn <enrico.stahn@gmail.com>
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package phpfpm
+
+import (
+	"encoding/json"
+	"testing"
+
+	"github.com/stretchr/testify/assert"
+)
+
+func TestCountProcessState(t *testing.T) {
+	processes := []PoolProcess{
+		{State: PoolProcessRequestIdle},
+		{State: PoolProcessRequestRunning},
+		{State: PoolProcessRequestReadingHeaders},
+		{State: PoolProcessRequestInfo},
+		{State: PoolProcessRequestFinishing},
+		{State: PoolProcessRequestEnding},
+	}
+
+	active, idle, total := CountProcessState(processes)
+
+	assert.Equal(t, int64(2), active, "active processes")
+	assert.Equal(t, int64(1), idle, "idle processes")
+	assert.Equal(t, int64(3), total, "total processes")
+}
+
+// https://github.com/hipages/php-fpm_exporter/issues/10
+func TestCannotUnmarshalNumberIssue10(t *testing.T) {
+	pool := Pool{}
+	content := []byte(`{
+	   "pool":"www",
+	   "process manager":"dynamic",
+	   "start time":1519474655,
+	   "start since":302035,
+	   "accepted conn":44144,
+	   "listen queue":0,
+	   "max listen queue":1,
+	   "listen queue len":128,
+	   "idle processes":1,
+	   "active processes":1,
+	   "total processes":2,
+	   "max active processes":2,
+	   "max children reached":0,
+	   "slow requests":0,
+	   "processes":[
+		  {
+			 "pid":23,
+			 "state":"Idle",
+			 "start time":1519474655,
+			 "start since":302035,
+			 "requests":22071,
+			 "request duration":295,
+			 "request method":"GET",
+			 "request uri":"/status?json&full",
+			 "content length":0,
+			 "user":"-",
+			 "script":"-",
+			 "last request cpu":0.00,
+			 "last request memory":2097152
+		  },
+		  {
+			 "pid":24,
+			 "state":"Running",
+			 "start time":1519474655,
+			 "start since":302035,
+			 "requests":22073,
+			 "request duration":18446744073709550774,
+			 "request method":"GET",
+			 "request uri":"/status?json&full",
+			 "content length":0,
+			 "user":"-",
+			 "script":"-",
+			 "last request cpu":0.00,
+			 "last request memory":0
+		  }
+	   ]
+    }`)
+
+	err := json.Unmarshal(content, &pool)
+
+	assert.NotNil(t, err, err.Error())
+}