command/write: can write arbitrary data from stdin

command/write_test.go

@@ -1,6 +1,7 @@
 package command
 
 import (
+	"io"
 	"testing"
 
 	"github.com/hashicorp/vault/http"
@@ -43,3 +44,47 @@ func TestWrite(t *testing.T) {
 		t.Fatalf("bad: %#v", resp)
 	}
 }
+
+func TestWrite_arbitrary(t *testing.T) {
+	core, _ := vault.TestCoreUnsealed(t)
+	ln, addr := http.TestServer(t, core)
+	defer ln.Close()
+
+	stdinR, stdinW := io.Pipe()
+	ui := new(cli.MockUi)
+	c := &WriteCommand{
+		Meta: Meta{
+			Ui: ui,
+		},
+
+		testStdin: stdinR,
+	}
+
+	go func() {
+		stdinW.Write([]byte(`{"foo":"bar"}`))
+		stdinW.Close()
+	}()
+
+	args := []string{
+		"-address", addr,
+		"secret/foo",
+		"-",
+	}
+	if code := c.Run(args); code != 0 {
+		t.Fatalf("bad: %d\n\n%s", code, ui.ErrorWriter.String())
+	}
+
+	client, err := c.Client()
+	if err != nil {
+		t.Fatalf("err: %s", err)
+	}
+
+	resp, err := client.Logical().Read("secret/foo")
+	if err != nil {
+		t.Fatalf("err: %s", err)
+	}
+
+	if resp.Data["foo"] != "bar" {
+		t.Fatalf("bad: %#v", resp)
+	}
+}