lib/tests/transitions/BUILD.bazel

load("@bazel_skylib//rules:write_file.bzl", "write_file")
load("//lib:transitions.bzl", "platform_transition_filegroup")
load("//lib:diff_test.bzl", "diff_test")

platform(
    name = "armv7_linux",
    constraint_values = [
        "@platforms//os:linux",
        "@platforms//cpu:armv7",
    ],
)

platform(
    name = "x86_64_linux",
    constraint_values = [
        "@platforms//os:linux",
        "@platforms//cpu:x86_64",
    ],
)

config_setting(
    name = "is_x86",
    constraint_values = [
        "@platforms//cpu:x86_64",
    ],
)

# Simple test fixture that produces something different depending on the
# target platform.
filegroup(
    name = "platform_description",
    srcs = select({
        ":is_x86": ["linux_x86.txt"],
        "//conditions:default": ["linux_arm.txt"],
    }),
)

platform_transition_filegroup(
    name = "for_x86",
    srcs = ["platform_description"],
    target_platform = ":x86_64_linux",
)

platform_transition_filegroup(
    name = "for_arm",
    srcs = ["platform_description"],
    target_platform = ":armv7_linux",
)

genrule(
    name = "for_x86_path",
    srcs = [":for_x86"],
    outs = ["for_x86_path.txt"],
    cmd = "echo $(rootpath :for_x86) > $@",
)

genrule(
    name = "for_arm_path",
    srcs = [":for_arm"],
    outs = ["for_arm_path.txt"],
    cmd = "echo $(rootpath :for_arm) > $@",
)

write_file(
    name = "expected_x86_path",
    out = "expected_x86_path.txt",
    content = [
        "lib/tests/transitions/linux_x86.txt",
        "",
    ],
)

write_file(
    name = "expected_arm_path",
    out = "expected_arm_path.txt",
    content = [
        "lib/tests/transitions/linux_arm.txt",
        "",
    ],
)

diff_test(
    name = "test_x86",
    file1 = ":for_x86_path",
    file2 = ":expected_x86_path",
)

diff_test(
    name = "test_arm",
    file1 = ":for_arm_path",
    file2 = ":expected_arm_path",
)