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cd1ad5646e
This integration test allows us to detect if a given feature gate will panic kubeadm. This builds on the assumption that a golang panic makes the process exit with the code 2. These tests are not trying to check if the init process succeeds or not, their only purpose is to ensure that the exit code of the `kubeadm init` invocation is not 2, thus, reflecting a golang panic. Some refactors had to be made to the test code, so we return the exit code along with stdout and stderr.
82 lines
2.6 KiB
Go
82 lines
2.6 KiB
Go
/*
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Copyright 2016 The Kubernetes Authors.
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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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http://www.apache.org/licenses/LICENSE-2.0
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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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*/
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package kubeadm
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import (
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"bytes"
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"os/exec"
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"testing"
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"github.com/pkg/errors"
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"github.com/spf13/cobra"
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)
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// Forked from test/e2e/framework because the e2e framework is quite bloated
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// for our purposes here, and modified to remove undesired logging.
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func runCmdNoWrap(command string, args ...string) (string, string, int, error) {
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var bout, berr bytes.Buffer
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cmd := exec.Command(command, args...)
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cmd.Stdout = &bout
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cmd.Stderr = &berr
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err := cmd.Run()
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stdout, stderr := bout.String(), berr.String()
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return stdout, stderr, cmd.ProcessState.ExitCode(), err
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}
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// RunCmd is a utility function for kubeadm testing that executes a specified command
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func RunCmd(command string, args ...string) (string, string, int, error) {
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stdout, stderr, retcode, err := runCmdNoWrap(command, args...)
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if err != nil {
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return stdout, stderr, retcode, errors.Wrapf(err, "error running %s %v; \nretcode %d, \nstdout %q, \nstderr %q, \ngot error",
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command, args, retcode, stdout, stderr)
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}
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return stdout, stderr, retcode, nil
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}
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// RunSubCommand is a utility function for kubeadm testing that executes a Cobra sub command
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func RunSubCommand(t *testing.T, subCmds []*cobra.Command, command string, args ...string) {
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subCmd := getSubCommand(t, subCmds, command)
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subCmd.SetArgs(args)
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if err := subCmd.Execute(); err != nil {
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t.Fatalf("Could not execute subcommand: %s", command)
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}
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}
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// AssertSubCommandHasFlags is a utility function for kubeadm testing that assert if a Cobra sub command has expected flags
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func AssertSubCommandHasFlags(t *testing.T, subCmds []*cobra.Command, command string, flags ...string) {
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subCmd := getSubCommand(t, subCmds, command)
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for _, flag := range flags {
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if subCmd.Flags().Lookup(flag) == nil {
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t.Errorf("Could not find expecte flag %s for command %s", flag, command)
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}
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}
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}
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func getSubCommand(t *testing.T, subCmds []*cobra.Command, name string) *cobra.Command {
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for _, subCmd := range subCmds {
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if subCmd.Name() == name {
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return subCmd
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}
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}
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t.Fatalf("Unable to find sub command %s", name)
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return nil
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}
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