Christian Schwarz
61 lines
1.6 KiB
Go
61 lines
1.6 KiB
Go
package zfscmd
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import (
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"bytes"
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"io"
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"os/exec"
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"testing"
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"github.com/stretchr/testify/assert"
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"github.com/stretchr/testify/require"
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)
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const testBin = "./zfscmd_platform_test.bash"
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func TestCmdStderrBehaviorOutput(t *testing.T) {
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stdout, err := exec.Command(testBin, "0").Output()
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require.NoError(t, err)
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require.Equal(t, []byte("to stdout\n"), stdout)
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stdout, err = exec.Command(testBin, "1").Output()
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assert.Equal(t, []byte("to stdout\n"), stdout)
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require.Error(t, err)
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ee, ok := err.(*exec.ExitError)
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require.True(t, ok)
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require.Equal(t, ee.Stderr, []byte("to stderr\n"))
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}
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func TestCmdStderrBehaviorCombinedOutput(t *testing.T) {
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stdio, err := exec.Command(testBin, "0").CombinedOutput()
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require.NoError(t, err)
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require.Equal(t, "to stderr\nto stdout\n", string(stdio))
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stdio, err = exec.Command(testBin, "1").CombinedOutput()
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require.Equal(t, "to stderr\nto stdout\n", string(stdio))
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require.Error(t, err)
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ee, ok := err.(*exec.ExitError)
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require.True(t, ok)
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require.Empty(t, ee.Stderr) // !!!! maybe not what one would expect
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}
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func TestCmdStderrBehaviorStdoutPipe(t *testing.T) {
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cmd := exec.Command(testBin, "1")
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stdoutPipe, err := cmd.StdoutPipe()
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require.NoError(t, err)
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err = cmd.Start()
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require.NoError(t, err)
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defer cmd.Wait()
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var stdout bytes.Buffer
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_, err = io.Copy(&stdout, stdoutPipe)
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require.NoError(t, err)
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require.Equal(t, "to stdout\n", stdout.String())
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err = cmd.Wait()
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require.Error(t, err)
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ee, ok := err.(*exec.ExitError)
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require.True(t, ok)
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require.Empty(t, ee.Stderr) // !!!!! probably not what one would expect if we only redirect stdout
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}
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