chore: add an e2e to test copy actions (#665)

.github/workflows/ci.yaml

@@ -86,10 +86,12 @@ jobs:
         bzlmodEnabled: [true, false]
         folder:
           - "."
-          - "e2e/coreutils"
+          - "e2e/copy_action"
           - "e2e/copy_to_directory"
+          - "e2e/coreutils"
           - "e2e/external_copy_to_directory"
           - "e2e/smoke"
+          - "e2e/write_source_files"
         exclude:
           # Don't test MacOS with RBE to minimize MacOS minutes (billed at 10X)
           - config: rbe

e2e/copy_action/.bazeliskrc

@@ -0,0 +1 @@
+../../.bazeliskrc

e2e/copy_action/.bazelversion

@@ -0,0 +1 @@
+../../.bazelversion

e2e/copy_action/BUILD.bazel

@@ -0,0 +1,13 @@
+load("@bazel_skylib//rules:build_test.bzl", "build_test")
+load(":copy.bzl", "simple_copy_file")
+
+simple_copy_file(
+    name = "copy",
+    src = "foo.txt",
+    out = "bar.txt",
+)
+
+build_test(
+    name = "test",
+    targets = [":copy"],
+)

e2e/copy_action/MODULE.bazel

@@ -0,0 +1,11 @@
+module(
+    version = "0.0.0",
+    compatibility_level = 1,
+)
+
+bazel_dep(name = "bazel_skylib", version = "1.5.0")
+bazel_dep(name = "aspect_bazel_lib", version = "0.0.0")
+local_path_override(
+    module_name = "aspect_bazel_lib",
+    path = "../..",
+)

e2e/copy_action/WORKSPACE

@@ -0,0 +1,27 @@
+load("@bazel_tools//tools/build_defs/repo:http.bzl", "http_archive")
+
+http_archive(
+    name = "bazel_skylib",
+    sha256 = "cd55a062e763b9349921f0f5db8c3933288dc8ba4f76dd9416aac68acee3cb94",
+    urls = [
+        "https://mirror.bazel.build/github.com/bazelbuild/bazel-skylib/releases/download/1.5.0/bazel-skylib-1.5.0.tar.gz",
+        "https://github.com/bazelbuild/bazel-skylib/releases/download/1.5.0/bazel-skylib-1.5.0.tar.gz",
+    ],
+)
+
+load("@bazel_skylib//:workspace.bzl", "bazel_skylib_workspace")
+
+bazel_skylib_workspace()
+
+local_repository(
+    name = "aspect_bazel_lib",
+    path = "../..",
+)
+
+load("@aspect_bazel_lib//lib:repositories.bzl", "aspect_bazel_lib_dependencies", "register_coreutils_toolchains")
+
+aspect_bazel_lib_dependencies()
+
+# Registering coreutils is required under WORKSPACE for the copy action to work
+# Under bzlmod, this is done automatically by just depending on the bazel-lib module.
+register_coreutils_toolchains()

e2e/copy_action/copy.bzl

@@ -0,0 +1,26 @@
+"""Rule that uses copy actions"""
+
+load("@aspect_bazel_lib//lib:copy_file.bzl", "COPY_FILE_TOOLCHAINS", "copy_file_action")
+
+def _simple_copy_file_impl(ctx):
+    if len(ctx.files.src) != 1:
+        fail("src must be a single file")
+    if ctx.files.src[0].is_directory:
+        fail("cannot use copy_file on a directory; try copy_directory instead")
+
+    copy_file_action(ctx, ctx.files.src[0], ctx.outputs.out)
+
+    files = depset(direct = [ctx.outputs.out])
+    runfiles = ctx.runfiles(files = [ctx.outputs.out])
+
+    return [DefaultInfo(files = files, runfiles = runfiles)]
+
+simple_copy_file = rule(
+    implementation = _simple_copy_file_impl,
+    provides = [DefaultInfo],
+    attrs = {
+        "src": attr.label(mandatory = True, allow_files = True),
+        "out": attr.output(mandatory = True),
+    },
+    toolchains = COPY_FILE_TOOLCHAINS,
+)

e2e/copy_action/foo.txt

@@ -0,0 +1 @@
+bar