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124 lines
3.2 KiB
Go
124 lines
3.2 KiB
Go
package dockerfile
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import (
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"fmt"
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"strings"
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"testing"
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"github.com/docker/docker/builder"
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"github.com/docker/docker/pkg/archive"
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"github.com/docker/engine-api/types"
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)
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func TestEmptyDockerfile(t *testing.T) {
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contextDir, cleanup := createTestTempDir(t, "", "builder-dockerfile-test")
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defer cleanup()
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createTestTempFile(t, contextDir, builder.DefaultDockerfileName, "", 0777)
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readAndCheckDockerfile(t, "emptyDockefile", contextDir, "", "The Dockerfile (Dockerfile) cannot be empty")
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}
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func TestSymlinkDockerfile(t *testing.T) {
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contextDir, cleanup := createTestTempDir(t, "", "builder-dockerfile-test")
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defer cleanup()
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createTestSymlink(t, contextDir, builder.DefaultDockerfileName, "/etc/passwd")
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// The reason the error is "Cannot locate specified Dockerfile" is because
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// in the builder, the symlink is resolved within the context, therefore
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// Dockerfile -> /etc/passwd becomes etc/passwd from the context which is
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// a nonexistent file.
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expectedError := fmt.Sprintf("Cannot locate specified Dockerfile: %s", builder.DefaultDockerfileName)
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readAndCheckDockerfile(t, "symlinkDockerfile", contextDir, builder.DefaultDockerfileName, expectedError)
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}
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func readAndCheckDockerfile(t *testing.T, testName, contextDir, dockerfilePath, expectedError string) {
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tarStream, err := archive.Tar(contextDir, archive.Uncompressed)
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if err != nil {
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t.Fatalf("Error when creating tar stream: %s", err)
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}
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defer func() {
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if err = tarStream.Close(); err != nil {
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t.Fatalf("Error when closing tar stream: %s", err)
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}
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}()
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context, err := builder.MakeTarSumContext(tarStream)
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if err != nil {
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t.Fatalf("Error when creating tar context: %s", err)
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}
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defer func() {
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if err = context.Close(); err != nil {
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t.Fatalf("Error when closing tar context: %s", err)
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}
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}()
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options := &types.ImageBuildOptions{
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Dockerfile: dockerfilePath,
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}
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b := &Builder{options: options, context: context}
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err = b.readDockerfile()
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if err == nil {
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t.Fatalf("No error when executing test: %s", testName)
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}
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if !strings.Contains(err.Error(), expectedError) {
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t.Fatalf("Wrong error message. Should be \"%s\". Got \"%s\"", expectedError, err.Error())
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}
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}
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func TestDockerfileOutsideTheBuildContext(t *testing.T) {
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contextDir, cleanup := createTestTempDir(t, "", "builder-dockerfile-test")
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defer cleanup()
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tarStream, err := archive.Tar(contextDir, archive.Uncompressed)
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if err != nil {
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t.Fatalf("Error when creating tar stream: %s", err)
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}
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defer func() {
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if err = tarStream.Close(); err != nil {
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t.Fatalf("Error when closing tar stream: %s", err)
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}
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}()
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context, err := builder.MakeTarSumContext(tarStream)
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if err != nil {
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t.Fatalf("Error when creating tar context: %s", err)
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}
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defer func() {
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if err = context.Close(); err != nil {
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t.Fatalf("Error when closing tar context: %s", err)
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}
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}()
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options := &types.ImageBuildOptions{
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Dockerfile: "../../Dockerfile",
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}
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b := &Builder{options: options, context: context}
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err = b.readDockerfile()
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if err == nil {
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t.Fatalf("No error when executing test for Dockerfile outside the build context")
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}
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expectedError := "Forbidden path outside the build context"
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if !strings.Contains(err.Error(), expectedError) {
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t.Fatalf("Wrong error message. Should be \"%s\". Got \"%s\"", expectedError, err.Error())
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}
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}
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