add buildrun log unit test

pkg/shp/cmd/buildrun/logs_test.go

@@ -0,0 +1,50 @@
+package buildrun
+
+import (
+	"strings"
+	"testing"
+
+	"github.com/shipwright-io/build/pkg/apis/build/v1alpha1"
+	"github.com/shipwright-io/cli/pkg/shp/params"
+
+	corev1 "k8s.io/api/core/v1"
+	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
+	"k8s.io/cli-runtime/pkg/genericclioptions"
+	"k8s.io/client-go/kubernetes/fake"
+
+	"github.com/spf13/cobra"
+)
+
+func TestStreamBuildLogs(t *testing.T) {
+	name := "test-obj"
+	pod := &corev1.Pod{}
+	pod.Name = name
+	pod.Namespace = metav1.NamespaceDefault
+	pod.Labels = map[string]string{
+		v1alpha1.LabelBuildRun: name,
+	}
+	pod.Spec.Containers = []corev1.Container{
+		{
+			Name: name,
+		},
+	}
+
+	cmd := LogsCommand{cmd: &cobra.Command{}}
+	cmd.name = name
+	// set up context
+	cmd.Cmd().ExecuteC()
+
+	clientset := fake.NewSimpleClientset(pod)
+	ioStreams, _, out, _ := genericclioptions.NewTestIOStreams()
+	param := params.NewParamsForTest(clientset, nil, nil, metav1.NamespaceDefault)
+	err := cmd.Run(param, &ioStreams)
+	if err != nil {
+		t.Fatalf("%s", err.Error())
+	}
+	if !strings.Contains(out.String(), "fake logs") {
+		t.Fatalf("unexpected output: %s", out.String())
+	}
+
+	t.Logf("%s", out.String())
+
+}