2a6d12b206
Ensures Ginkgo is able to print detailed failure messages instead of them being captured by the pipe.
86 lines
2.1 KiB
Go
86 lines
2.1 KiB
Go
// Copyright 2016 CNI authors
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package testutils
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import (
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"io/ioutil"
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"os"
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"github.com/containernetworking/cni/pkg/types"
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"github.com/containernetworking/cni/pkg/version"
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)
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func envCleanup() {
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os.Unsetenv("CNI_COMMAND")
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os.Unsetenv("CNI_PATH")
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os.Unsetenv("CNI_NETNS")
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os.Unsetenv("CNI_IFNAME")
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}
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func CmdAddWithResult(cniNetns, cniIfname string, conf []byte, f func() error) (types.Result, []byte, error) {
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os.Setenv("CNI_COMMAND", "ADD")
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os.Setenv("CNI_PATH", os.Getenv("PATH"))
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os.Setenv("CNI_NETNS", cniNetns)
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os.Setenv("CNI_IFNAME", cniIfname)
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defer envCleanup()
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// Redirect stdout to capture plugin result
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oldStdout := os.Stdout
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r, w, err := os.Pipe()
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if err != nil {
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return nil, nil, err
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}
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os.Stdout = w
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err = f()
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w.Close()
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var out []byte
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if err == nil {
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out, err = ioutil.ReadAll(r)
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}
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os.Stdout = oldStdout
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// Return errors after restoring stdout so Ginkgo will correctly
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// emit verbose error information on stdout
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if err != nil {
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return nil, nil, err
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}
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// Plugin must return result in same version as specified in netconf
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versionDecoder := &version.ConfigDecoder{}
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confVersion, err := versionDecoder.Decode(conf)
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if err != nil {
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return nil, nil, err
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}
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result, err := version.NewResult(confVersion, out)
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if err != nil {
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return nil, nil, err
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}
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return result, out, nil
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}
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func CmdDelWithResult(cniNetns, cniIfname string, f func() error) error {
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os.Setenv("CNI_COMMAND", "DEL")
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os.Setenv("CNI_PATH", os.Getenv("PATH"))
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os.Setenv("CNI_NETNS", cniNetns)
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os.Setenv("CNI_IFNAME", cniIfname)
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defer envCleanup()
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return f()
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}
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