Add test for isCNIResultForPID

Signed-off-by: Alex Ellis (OpenFaaS Ltd) <alexellis2@gmail.com>

pkg/cninetwork/cni_network_test.go

@@ -0,0 +1,63 @@
+package cninetwork
+
+import (
+	"io/ioutil"
+	"os"
+	"path/filepath"
+	"testing"
+)
+
+func Test_isCNIResultForPID_Found(t *testing.T) {
+	body := `nats-621
+eth1`
+	fileName := `10.62.0.2`
+	container := "nats"
+	PID := uint32(621)
+	fullPath := filepath.Join(os.TempDir(), fileName)
+
+	err := ioutil.WriteFile(fullPath, []byte(body), 0700)
+	if err != nil {
+		t.Fatalf(err.Error())
+	}
+	defer func() {
+		os.Remove(fullPath)
+	}()
+
+	got, err := isCNIResultForPID(fullPath, container, PID)
+
+	if err != nil {
+		t.Fatalf(err.Error())
+	}
+
+	want := true
+	if got != want {
+		t.Fatalf("want %v, but got %v", want, got)
+	}
+}
+
+func Test_isCNIResultForPID_NoMatch(t *testing.T) {
+	body := `nats-621
+eth1`
+	fileName := `10.62.0.3`
+	container := "gateway"
+	PID := uint32(621)
+	fullPath := filepath.Join(os.TempDir(), fileName)
+
+	err := ioutil.WriteFile(fullPath, []byte(body), 0700)
+	if err != nil {
+		t.Fatalf(err.Error())
+	}
+	defer func() {
+		os.Remove(fullPath)
+	}()
+
+	got, err := isCNIResultForPID(fullPath, container, PID)
+
+	if err != nil {
+		t.Fatalf(err.Error())
+	}
+	want := false
+	if got != want {
+		t.Fatalf("want %v, but got %v", want, got)
+	}
+}