add tests for api command

cmd/convox/api_test.go

@@ -0,0 +1,23 @@
+package main
+
+import (
+	"testing"
+
+	"github.com/convox/rack/test"
+)
+
+func TestApiGet(t *testing.T) {
+	ts := testServer(t,
+		test.Http{Method: "GET", Path: "/foo", Code: 200, Response: "bar"},
+	)
+
+	defer ts.Close()
+
+	test.Runs(t,
+		test.ExecRun{
+			Command: "convox api get /foo",
+			Exit:    0,
+			Stdout:  "\"bar\"\n",
+		},
+	)
+}