Test failed metrics

Fixes #4

Author: renatomefi

test/testinfra/test_metrics.py

@@ -1,5 +1,19 @@
 import pytest
 
+@pytest.mark.php_fpm
+def test_metric_fail_accepted_conn(host):
+    cmd = host.run("php-fpm-healthcheck --accepted-conn=0")
+    assert cmd.rc == 1
+    assert "'accepted conn' value '1' is greater than expected '0'" in cmd.stderr
+
+@pytest.mark.php_fpm
+def test_metric_fail_accepted_conn_with_other_metrics(host):
+    cmd = host.run("php-fpm-healthcheck --verbose --listen-queue=10 --max-active-processes=10 --accepted-conn=0")
+    assert cmd.rc == 1
+    assert "'accepted conn' value '2' is greater than expected '0'" in cmd.stderr
+    assert "'listen queue' value" in cmd.stdout
+    assert "'max active processes' value" in cmd.stdout
+
 @pytest.mark.php_fpm
 def test_metric_accepted_conn(host):
     cmd = host.run("php-fpm-healthcheck -v")