diff --git a/pkg/modgearman/internal_dummy_test.go b/pkg/modgearman/internal_dummy_test.go
new file mode 100644
index 0000000..b9179bb
--- /dev/null
+++ b/pkg/modgearman/internal_dummy_test.go
@@ -0,0 +1,45 @@
+package modgearman
+
+import (
+	"testing"
+
+	"github.com/stretchr/testify/assert"
+)
+
+func TestDummy(t *testing.T) {
+	cmdLine := `ENV1=test ./lib/check_dummy 0 'test output'`
+	cmd := parseCommand(cmdLine, &config{internalCheckDummy: true})
+
+	assert.Equal(t, Internal, cmd.ExecType, "exec type")
+	assert.Equal(t, &InternalCheckDummy{}, cmd.InternalCheck, "exec type")
+}
+
+func TestDummyExecute(t *testing.T) {
+	cfg := config{}
+	cfg.setDefaultValues()
+	cfg.encryption = false
+	result := &answer{}
+
+	executeCommandLine(result, &request{
+		commandLine: `ENV1=test ./lib/check_dummy 0 'test output'`,
+		timeout:     10,
+	}, &cfg)
+	assert.Equal(t, "internal", result.execType, "exec type")
+	assert.Equal(t, 0, result.returnCode, "return code")
+	assert.Equal(t, "OK: test output", result.output, "output")
+}
+
+func TestDummyExecuteWarning(t *testing.T) {
+	cfg := config{}
+	cfg.setDefaultValues()
+	cfg.encryption = false
+	result := &answer{}
+
+	executeCommandLine(result, &request{
+		commandLine: `ENV1=test ./lib/check_dummy 1 test' 'out"put"`,
+		timeout:     10,
+	}, &cfg)
+	assert.Equal(t, "internal", result.execType, "exec type")
+	assert.Equal(t, 1, result.returnCode, "return code")
+	assert.Equal(t, "WARNING: test output", result.output, "output")
+}