source_build_test.go

package dalec

import (
	"context"
	"testing"
)

func TestSourceBuild(t *testing.T) {
	src := Source{
		Build: &SourceBuild{
			Source: Source{
				Inline: &SourceInline{
					File: &SourceInlineFile{
						Contents: `
						FROM busybox:latest
						RUN echo hello
						`,
					},
				},
			},
		},
	}

	ctx := context.Background()
	ops := getSourceOp(ctx, t, src)

	xID := "docker-image://docker.io/library/busybox:latest"
	id := ops[0].GetSource().Identifier
	if id != xID {
		t.Errorf("expected identifier %q, got %q", xID, id)
	}

	// To reuse code, let's craft an equivalent SourceDockerImage with cmd's
	// We'll use that to validate the ops we got from the build source with [checkCmd]
	srcDI := SourceDockerImage{
		Ref: xID,
		Cmd: &Command{
			Dir: "/", // Dockerfile defaults to /
			Env: map[string]string{
				// The dockerfile frontend auto-injects these env vars
				"PATH": "/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin",
			},
			Steps: []*BuildStep{
				{Command: "echo hello"},
			},
		},
	}

	checkCmd(t, ops[1:], &Source{DockerImage: &srcDI}, [][]expectMount{noMountCheck, noMountCheck})

	t.Run("with filters", func(t *testing.T) {
		t.Run("subdir", func(t *testing.T) {
			src := src
			src.Path = "subdir"

			// for build source, we expect to have a copy operation as the last op
			ops := getSourceOp(ctx, t, src)

			checkCmd(t, ops[1:len(ops)-1], &Source{DockerImage: &srcDI}, [][]expectMount{{rootMount}, {rootMount, expectMount{dest: "subdir"}}})
			checkFilter(t, ops[len(ops)-1].GetFile(), &src)
		})

		t.Run("include and exclude", func(t *testing.T) {
			src := src
			src.Includes = []string{"foo", "bar"}
			src.Excludes = []string{"baz"}

			// for build source, we expect to have a copy operation as the last op
			ops := getSourceOp(ctx, t, src)
			checkCmd(t, ops[1:len(ops)-1], &Source{DockerImage: &srcDI}, [][]expectMount{noMountCheck, noMountCheck})
			checkFilter(t, ops[len(ops)-1].GetFile(), &src)
		})

		t.Run("subpath with include-exclude", func(t *testing.T) {
			src := src
			src.Path = "subdir"
			src.Includes = []string{"foo", "bar"}
			src.Excludes = []string{"baz"}

			// for build source, we expect to have a copy operation as the last op
			ops := getSourceOp(ctx, t, src)
			checkCmd(t, ops[1:len(ops)-1], &Source{DockerImage: &srcDI}, [][]expectMount{{rootMount}, {rootMount, expectMount{dest: "subdir"}}})
			checkFilter(t, ops[len(ops)-1].GetFile(), &src)
		})
	})
}