DockerCLI/cli/connhelper/commandconn/commandconn_unix_test.go

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// +build !windows
package commandconn
import (
"context"
"io"
"testing"
"gotest.tools/assert"
is "gotest.tools/assert/cmp"
)
// For https://github.com/docker/cli/pull/1014#issuecomment-409308139
func TestEOFWithError(t *testing.T) {
ctx := context.TODO()
cmd := "sh"
args := []string{"-c", "echo hello; echo some error >&2; exit 42"}
c, err := New(ctx, cmd, args...)
assert.NilError(t, err)
b := make([]byte, 32)
n, err := c.Read(b)
assert.Check(t, is.Equal(len("hello\n"), n))
assert.NilError(t, err)
n, err = c.Read(b)
assert.Check(t, is.Equal(0, n))
assert.ErrorContains(t, err, "some error")
assert.ErrorContains(t, err, "42")
}
func TestEOFWithoutError(t *testing.T) {
ctx := context.TODO()
cmd := "sh"
args := []string{"-c", "echo hello; echo some debug log >&2; exit 0"}
c, err := New(ctx, cmd, args...)
assert.NilError(t, err)
b := make([]byte, 32)
n, err := c.Read(b)
assert.Check(t, is.Equal(len("hello\n"), n))
assert.NilError(t, err)
n, err = c.Read(b)
assert.Check(t, is.Equal(0, n))
assert.Check(t, is.Equal(io.EOF, err))
}