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https://github.com/element-hq/synapse.git
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e1a429ae2e
Run `poetry run ./scripts-dev/lint.sh` which exposed some formatted Complement tests that were introduced in https://github.com/element-hq/synapse/pull/19509 There is no CI for this so it's easy to miss.
69 lines
1.5 KiB
Go
69 lines
1.5 KiB
Go
package dockerutil
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import (
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"archive/tar"
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"bytes"
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"fmt"
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"testing"
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"github.com/docker/docker/api/types/container"
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"github.com/docker/docker/client"
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)
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// Write `data` as a file into a container at the given `path`.
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//
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// Internally, produces an uncompressed single-file tape archive (tar) that is sent to the docker
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// daemon to be unpacked into the container filesystem.
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func WriteFileIntoContainer(
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t *testing.T,
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docker *client.Client,
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containerID string,
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path string,
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data []byte,
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) error {
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// Create a fake/virtual tar file in memory that we can copy to the container
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// via https://stackoverflow.com/a/52131297/796832
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var buf bytes.Buffer
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tw := tar.NewWriter(&buf)
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err := tw.WriteHeader(&tar.Header{
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Name: path,
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Mode: 0777,
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Size: int64(len(data)),
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})
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if err != nil {
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return fmt.Errorf(
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"WriteIntoContainer: failed to write tarball header for %s: %v",
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path,
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err,
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)
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}
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_, err = tw.Write([]byte(data))
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if err != nil {
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return fmt.Errorf("WriteIntoContainer: failed to write tarball data for %s: %w", path, err)
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}
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err = tw.Close()
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if err != nil {
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return fmt.Errorf(
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"WriteIntoContainer: failed to close tarball writer for %s: %w",
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path,
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err,
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)
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}
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// Put our new fake file in the container volume
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err = docker.CopyToContainer(
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t.Context(),
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containerID,
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"/",
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&buf,
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container.CopyToContainerOptions{
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AllowOverwriteDirWithFile: false,
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},
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)
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if err != nil {
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return fmt.Errorf("WriteIntoContainer: failed to copy: %s", err)
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}
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return nil
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}
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