52 lines
1.3 KiB
Go
52 lines
1.3 KiB
Go
package build
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import (
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"context"
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"encoding/json"
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"io"
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"testing"
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"github.com/docker/docker/api/types"
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"github.com/docker/docker/client"
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"github.com/docker/docker/pkg/jsonmessage"
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"github.com/docker/docker/testutil/fakecontext"
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"gotest.tools/v3/assert"
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)
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// Do builds an image from the given context and returns the image ID.
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func Do(ctx context.Context, t *testing.T, client client.APIClient, buildCtx *fakecontext.Fake) string {
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resp, err := client.ImageBuild(ctx, buildCtx.AsTarReader(t), types.ImageBuildOptions{})
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if resp.Body != nil {
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defer resp.Body.Close()
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}
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assert.NilError(t, err)
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img := GetImageIDFromBody(t, resp.Body)
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t.Cleanup(func() {
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client.ImageRemove(ctx, img, types.ImageRemoveOptions{Force: true})
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})
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return img
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}
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// GetImageIDFromBody reads the image ID from the build response body.
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func GetImageIDFromBody(t *testing.T, body io.Reader) string {
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var (
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jm jsonmessage.JSONMessage
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br types.BuildResult
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dec = json.NewDecoder(body)
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)
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for {
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err := dec.Decode(&jm)
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if err == io.EOF {
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break
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}
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assert.NilError(t, err)
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if jm.Aux == nil {
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continue
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}
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assert.NilError(t, json.Unmarshal(*jm.Aux, &br))
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assert.Assert(t, br.ID != "", "could not read image ID from build output")
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break
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}
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io.Copy(io.Discard, body)
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return br.ID
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}
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