Builder tests rewrite

Signed-off-by: apostasie <[email protected]>

cmd/nerdctl/builder/builder_build_oci_layout_test.go

@@ -0,0 +1,107 @@
+/*
+   Copyright The containerd Authors.
+
+   Licensed under the Apache License, Version 2.0 (the "License");
+   you may not use this file except in compliance with the License.
+   You may obtain a copy of the License at
+
+       http://www.apache.org/licenses/LICENSE-2.0
+
+   Unless required by applicable law or agreed to in writing, software
+   distributed under the License is distributed on an "AS IS" BASIS,
+   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+   See the License for the specific language governing permissions and
+   limitations under the License.
+*/
+
+package builder
+
+import (
+	"fmt"
+	"os"
+	"path/filepath"
+	"strings"
+	"testing"
+
+	"gotest.tools/v3/assert"
+
+	"github.com/containerd/nerdctl/v2/pkg/testutil"
+	"github.com/containerd/nerdctl/v2/pkg/testutil/nerdtest"
+	"github.com/containerd/nerdctl/v2/pkg/testutil/test"
+)
+
+func TestBuildContextWithOCILayout(t *testing.T) {
+	nerdtest.Setup()
+
+	var dockerBuilderArgs []string
+
+	testCase := &test.Case{
+		Require: test.Require(
+			nerdtest.Build,
+			test.Not(test.Windows),
+		),
+		Cleanup: func(data test.Data, helpers test.Helpers) {
+			if nerdtest.IsDocker() {
+				helpers.Anyhow("buildx", "stop", data.Identifier("-container"))
+				helpers.Anyhow("buildx", "rm", "--force", data.Identifier("-container"))
+			}
+			helpers.Anyhow("rmi", "-f", data.Identifier("-parent"))
+			helpers.Anyhow("rmi", "-f", data.Identifier("-child"))
+		},
+		Setup: func(data test.Data, helpers test.Helpers) {
+			// Default docker driver does not support OCI exporter.
+			// Reference: https://docs.docker.com/build/exporters/oci-docker/
+			if nerdtest.IsDocker() {
+				name := data.Identifier("-container")
+				helpers.Ensure("buildx", "create", "--name", name, "--driver=docker-container")
+				dockerBuilderArgs = []string{"buildx", "--builder", name}
+			}
+
+			dockerfile := fmt.Sprintf(`FROM %s
+LABEL layer=oci-layout-parent
+CMD ["echo", "test-nerdctl-build-context-oci-layout-parent"]`, testutil.CommonImage)
+
+			buildCtx := data.TempDir()
+			err := os.WriteFile(filepath.Join(buildCtx, "Dockerfile"), []byte(dockerfile), 0o600)
+			assert.NilError(helpers.T(), err)
+
+			tarPath := filepath.Join(buildCtx, "parent.tar")
+			dest := filepath.Join(buildCtx, "parent")
+			assert.NilError(helpers.T(), os.MkdirAll(dest, 0o700))
+			helpers.Ensure("build", buildCtx, "--tag", data.Identifier("-parent"))
+			helpers.Ensure("image", "save", "--output", tarPath, data.Identifier("-parent"))
+			helpers.Custom("tar", "Cxf", dest, tarPath).Run(&test.Expected{})
+		},
+
+		Command: func(data test.Data, helpers test.Helpers) test.TestableCommand {
+			dockerfile := `FROM parent
+CMD ["echo", "test-nerdctl-build-context-oci-layout"]`
+
+			buildCtx := data.TempDir()
+			err := os.WriteFile(filepath.Join(buildCtx, "Dockerfile"), []byte(dockerfile), 0o600)
+			assert.NilError(helpers.T(), err)
+
+			var cmd test.TestableCommand
+			if nerdtest.IsDocker() {
+				cmd = helpers.Command(dockerBuilderArgs...)
+			} else {
+				cmd = helpers.Command()
+			}
+			cmd.WithArgs("build", buildCtx, fmt.Sprintf("--build-context=parent=oci-layout://%s", filepath.Join(buildCtx, "parent")), "--tag", data.Identifier("-child"))
+			if nerdtest.IsDocker() {
+				// Need to load the container image from the builder to be able to run it.
+				cmd.WithArgs("--load")
+			}
+			return cmd
+		},
+		Expected: func(data test.Data, helpers test.Helpers) *test.Expected {
+			return &test.Expected{
+				Output: func(stdout string, info string, t *testing.T) {
+					assert.Assert(t, strings.Contains(helpers.Capture("run", "--rm", data.Identifier("-child")), "test-nerdctl-build-context-oci-layout"), info)
+				},
+			}
+		},
+	}
+
+	testCase.Run(t)
+}