| // Licensed to the Apache Software Foundation (ASF) under one or more |
| // contributor license agreements. See the NOTICE file distributed with |
| // this work for additional information regarding copyright ownership. |
| // The ASF licenses this file to You under the Apache License, Version 2.0 |
| // (the "License"); you may not use this file except in compliance with |
| // the License. You may obtain a copy of the License at |
| // |
| // http://www.apache.org/licenses/LICENSE-2.0 |
| // |
| // Unless required by applicable law or agreed to in writing, software |
| // distributed under the License is distributed on an "AS IS" BASIS, |
| // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| // See the License for the specific language governing permissions and |
| // limitations under the License. |
| |
| package cmd |
| |
| import ( |
| "io" |
| "os" |
| "strings" |
| "testing" |
| ) |
| |
| import ( |
| "github.com/ory/viper" |
| ) |
| |
| import ( |
| . "github.com/apache/dubbo-kubernetes/app/dubboctl/internal/testing" |
| ) |
| |
| // fromTempDirectory is a test helper which endeavors to create |
| // an environment clean of developer's settings for use during CLI testing. |
| func fromTempDirectory(t *testing.T) string { |
| t.Helper() |
| ClearEnvs(t) |
| |
| // By default unit tests presume no config exists unless provided in testdata. |
| t.Setenv("XDG_CONFIG_HOME", t.TempDir()) |
| |
| // creates and CDs to a temp directory |
| d, done := Mktemp(t) |
| |
| // Return to original directory and resets viper. |
| t.Cleanup(func() { done(); viper.Reset() }) |
| return d |
| } |
| |
| // pipe the output of stdout to a buffer whose value is returned |
| // from the returned function. Call pipe() to start piping output |
| // to the buffer, call the returned function to access the data in |
| // the buffer. |
| func piped(t *testing.T) func() string { |
| t.Helper() |
| var ( |
| o = os.Stdout |
| c = make(chan error, 1) |
| b strings.Builder |
| ) |
| |
| r, w, err := os.Pipe() |
| if err != nil { |
| t.Fatal(err) |
| } |
| |
| os.Stdout = w |
| |
| go func() { |
| _, err := io.Copy(&b, r) |
| r.Close() |
| c <- err |
| }() |
| |
| return func() string { |
| os.Stdout = o |
| w.Close() |
| err := <-c |
| if err != nil { |
| t.Fatal(err) |
| } |
| return strings.TrimSpace(b.String()) |
| } |
| } |