utils/bazel/llvm-project-overlay/libc/test/libc_test_rules.bzl

# This file is licensed under the Apache License v2.0 with LLVM Exceptions.
# See https://llvm.org/LICENSE.txt for license information.
# SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception

"""LLVM libc starlark rules for tests.

libc functions are created though the libc_build_rules.bzl:libc_function.
They come in two flavors:
 - the internal one that is scoped into the `LIBC_NAMESPACE` namespace.
 - the libc one that is the regular C function.

When performing tests we make sure to always use the internal version.
"""

load("//libc:libc_build_rules.bzl", "libc_common_copts", "libc_internal_target")

def libc_test(name, srcs, libc_function_deps = [], copts = [], deps = [], **kwargs):
    """Add target for a libc test.

    Args:
      name: Test target name
      srcs: List of sources for the test.
      libc_function_deps: List of libc_function targets used by this test.
      copts: The list of options to add to the C++ compilation command.
      deps: The list of other libraries to be linked in to the test target.
      **kwargs: Attributes relevant for a libc_test. For example, name, srcs.
    """
    all_function_deps = libc_function_deps + ["//libc:errno"]
    native.cc_test(
        name = name,
        srcs = srcs,
        deps = [libc_internal_target(d) for d in all_function_deps] + [
            "//libc/test/UnitTest:LibcUnitTest",
        ] + deps,
        features = ["-link_llvmlibc"],  # Do not link libllvmlibc.a
        copts = copts + libc_common_copts(),
        linkstatic = 1,
        **kwargs
    )