124 lines
3.4 KiB
Go
124 lines
3.4 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 invoke_test
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import (
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"bytes"
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"io/ioutil"
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"os"
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"github.com/containernetworking/cni/pkg/invoke"
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noop_debug "github.com/containernetworking/cni/plugins/test/noop/debug"
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. "github.com/onsi/ginkgo"
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. "github.com/onsi/gomega"
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)
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var _ = Describe("RawExec", func() {
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var (
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debugFileName string
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debug *noop_debug.Debug
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environ []string
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stdin []byte
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execer *invoke.RawExec
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)
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const reportResult = `{ "some": "result" }`
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BeforeEach(func() {
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debugFile, err := ioutil.TempFile("", "cni_debug")
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Expect(err).NotTo(HaveOccurred())
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Expect(debugFile.Close()).To(Succeed())
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debugFileName = debugFile.Name()
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debug = &noop_debug.Debug{
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ReportResult: reportResult,
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ReportStderr: "some stderr message",
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}
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Expect(debug.WriteDebug(debugFileName)).To(Succeed())
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environ = []string{
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"CNI_COMMAND=ADD",
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"CNI_CONTAINERID=some-container-id",
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"CNI_ARGS=DEBUG=" + debugFileName,
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"CNI_NETNS=/some/netns/path",
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"CNI_PATH=/some/bin/path",
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"CNI_IFNAME=some-eth0",
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}
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stdin = []byte(`{"some":"stdin-json", "cniVersion": "0.2.0"}`)
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execer = &invoke.RawExec{}
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})
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AfterEach(func() {
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Expect(os.Remove(debugFileName)).To(Succeed())
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})
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It("runs the plugin with the given stdin and environment", func() {
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_, err := execer.ExecPlugin(pathToPlugin, stdin, environ)
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Expect(err).NotTo(HaveOccurred())
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debug, err := noop_debug.ReadDebug(debugFileName)
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Expect(err).NotTo(HaveOccurred())
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Expect(debug.Command).To(Equal("ADD"))
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Expect(debug.CmdArgs.StdinData).To(Equal(stdin))
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Expect(debug.CmdArgs.Netns).To(Equal("/some/netns/path"))
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})
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It("returns the resulting stdout as bytes", func() {
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resultBytes, err := execer.ExecPlugin(pathToPlugin, stdin, environ)
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Expect(err).NotTo(HaveOccurred())
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Expect(resultBytes).To(BeEquivalentTo(reportResult))
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})
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Context("when the Stderr writer is set", func() {
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var stderrBuffer *bytes.Buffer
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BeforeEach(func() {
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stderrBuffer = &bytes.Buffer{}
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execer.Stderr = stderrBuffer
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})
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It("forwards any stderr bytes to the Stderr writer", func() {
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_, err := execer.ExecPlugin(pathToPlugin, stdin, environ)
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Expect(err).NotTo(HaveOccurred())
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Expect(stderrBuffer.String()).To(Equal("some stderr message"))
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})
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})
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Context("when the plugin errors", func() {
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BeforeEach(func() {
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debug.ReportError = "banana"
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Expect(debug.WriteDebug(debugFileName)).To(Succeed())
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})
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It("wraps and returns the error", func() {
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_, err := execer.ExecPlugin(pathToPlugin, stdin, environ)
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Expect(err).To(HaveOccurred())
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Expect(err).To(MatchError("banana"))
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})
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})
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Context("when the system is unable to execute the plugin", func() {
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It("returns the error", func() {
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_, err := execer.ExecPlugin("/tmp/some/invalid/plugin/path", stdin, environ)
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Expect(err).To(HaveOccurred())
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Expect(err).To(MatchError(ContainSubstring("/tmp/some/invalid/plugin/path")))
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})
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})
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})
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