fix: name flag dereference (#1095)

# Description

Fixes NPE related to uninstantiated `Name` pointer 

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## Additional Notes

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---

Please refer to the [CONTRIBUTING.md](../CONTRIBUTING.md) file for more
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---------

Signed-off-by: Evan Baker <rbtr@users.noreply.github.com>

cli/cmd/capture/capture.go

@@ -12,7 +12,9 @@ import (
 var opts = struct {
 	genericclioptions.ConfigFlags
 	Name *string
-}{}
+}{
+	Name: new(string),
+}
 
 const defaultName = "retina-capture"
 

cli/cmd_test.go

@@ -0,0 +1,33 @@
+package main
+
+import (
+	"bytes"
+	"testing"
+
+	"github.com/microsoft/retina/cli/cmd"
+	"github.com/spf13/cobra"
+	"github.com/stretchr/testify/assert"
+	"github.com/stretchr/testify/require"
+)
+
+func ExecuteInTest(cmd *cobra.Command, args []string) (stdout string, stderr string, err error) {
+	var stdoutBuf, stderrBuf bytes.Buffer
+	cmd.SetArgs(args)
+	cmd.SetOut(&stdoutBuf)
+	cmd.SetErr(&stderrBuf)
+	defer func() {
+		cmd.SetArgs(nil)
+		cmd.SetOut(nil)
+		cmd.SetErr(nil)
+	}()
+
+	err = cmd.Execute()
+	return stdoutBuf.String(), stderrBuf.String(), err
+}
+
+func TestCLICmd(t *testing.T) {
+	stdout, stderr, err := ExecuteInTest(cmd.Retina, []string{"-h"})
+	require.NoError(t, err)
+	assert.Contains(t, stdout, "kubectl-retina")
+	assert.Equal(t, stderr, "")
+}