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moby--moby/integration/build/build_squash_test.go
Sebastiaan van Stijn b3407d2029
Testing: create new daemon (only) if needed
Some tests were skipped if the local daemon did not have
experimental features enabled; at the same time, some tests
unconditionally created a new (experimental) daemon, even if
the local daemon already had experimental enabled.

This patch;

- Checks if the "testEnv" is an experimental Linux daemon
- If not, and the daemon is running locally; spin up a new
  experimental daemon to be used during the test.

Signed-off-by: Sebastiaan van Stijn <github@gone.nl>
2019-02-23 13:32:59 +01:00

115 lines
3 KiB
Go

package build
import (
"bytes"
"context"
"io"
"io/ioutil"
"strings"
"testing"
"github.com/docker/docker/api/types"
dclient "github.com/docker/docker/client"
"github.com/docker/docker/integration/internal/container"
"github.com/docker/docker/internal/test/daemon"
"github.com/docker/docker/internal/test/fakecontext"
"github.com/docker/docker/pkg/stdcopy"
"gotest.tools/assert"
is "gotest.tools/assert/cmp"
"gotest.tools/skip"
)
func TestBuildSquashParent(t *testing.T) {
skip.If(t, testEnv.DaemonInfo.OSType == "windows")
var client dclient.APIClient
if !testEnv.DaemonInfo.ExperimentalBuild {
skip.If(t, testEnv.IsRemoteDaemon, "cannot run daemon when remote daemon")
d := daemon.New(t, daemon.WithExperimental)
d.StartWithBusybox(t)
defer d.Stop(t)
client = d.NewClientT(t)
} else {
client = testEnv.APIClient()
}
dockerfile := `
FROM busybox
RUN echo hello > /hello
RUN echo world >> /hello
RUN echo hello > /remove_me
ENV HELLO world
RUN rm /remove_me
`
// build and get the ID that we can use later for history comparison
ctx := context.Background()
source := fakecontext.New(t, "", fakecontext.WithDockerfile(dockerfile))
defer source.Close()
name := "test"
resp, err := client.ImageBuild(ctx,
source.AsTarReader(t),
types.ImageBuildOptions{
Remove: true,
ForceRemove: true,
Tags: []string{name},
})
assert.NilError(t, err)
_, err = io.Copy(ioutil.Discard, resp.Body)
resp.Body.Close()
assert.NilError(t, err)
inspect, _, err := client.ImageInspectWithRaw(ctx, name)
assert.NilError(t, err)
origID := inspect.ID
// build with squash
resp, err = client.ImageBuild(ctx,
source.AsTarReader(t),
types.ImageBuildOptions{
Remove: true,
ForceRemove: true,
Squash: true,
Tags: []string{name},
})
assert.NilError(t, err)
_, err = io.Copy(ioutil.Discard, resp.Body)
resp.Body.Close()
assert.NilError(t, err)
cid := container.Run(t, ctx, client,
container.WithImage(name),
container.WithCmd("/bin/sh", "-c", "cat /hello"),
)
reader, err := client.ContainerLogs(ctx, cid, types.ContainerLogsOptions{
ShowStdout: true,
})
assert.NilError(t, err)
actualStdout := new(bytes.Buffer)
actualStderr := ioutil.Discard
_, err = stdcopy.StdCopy(actualStdout, actualStderr, reader)
assert.NilError(t, err)
assert.Check(t, is.Equal(strings.TrimSpace(actualStdout.String()), "hello\nworld"))
container.Run(t, ctx, client,
container.WithImage(name),
container.WithCmd("/bin/sh", "-c", "[ ! -f /remove_me ]"),
)
container.Run(t, ctx, client,
container.WithImage(name),
container.WithCmd("/bin/sh", "-c", `[ "$(echo $HELLO)" == "world" ]`),
)
origHistory, err := client.ImageHistory(ctx, origID)
assert.NilError(t, err)
testHistory, err := client.ImageHistory(ctx, name)
assert.NilError(t, err)
inspect, _, err = client.ImageInspectWithRaw(ctx, name)
assert.NilError(t, err)
assert.Check(t, is.Len(testHistory, len(origHistory)+1))
assert.Check(t, is.Len(inspect.RootFS.Layers, 2))
}