build/rust/tests/BUILD.gn

# Copyright 2021 The Chromium Authors
# Use of this source code is governed by a BSD-style license that can be
# found in the LICENSE file.

import("//build/config/rust.gni")
import("//build/rust/rust_unit_tests_group.gni")

# Build some minimal binaries to exercise the Rust toolchain
# only if that toolchain is enabled in gn args.
group("tests") {
  testonly = true

  deps = [ ":deps" ]
  if (can_build_rust_unit_tests) {
    deps += [ ":build_rust_tests" ]
  }
}

group("deps") {
  testonly = true
  deps = []

  # All the rest require Rust.
  if (toolchain_has_rust) {
    deps += [
      "//build/rust/tests/bindgen_cpp_test_with_cpp_linkage",
      "//build/rust/tests/bindgen_static_fns_test",
      "//build/rust/tests/bindgen_test",
      "//build/rust/tests/test_aliased_deps",
      "//build/rust/tests/test_aliased_deps:test_aliased_deps_exe",
      "//build/rust/tests/test_bin_crate",
      "//build/rust/tests/test_rlib_crate:target1",
      "//build/rust/tests/test_rlib_crate:target2",
      "//build/rust/tests/test_rlib_crate:test_rlib_crate_associated_bin",
      "//build/rust/tests/test_rlib_crate_testonly:testonly_target",
      "//build/rust/tests/test_rust_exe_2",
      "//build/rust/tests/test_rust_metadata:test_rust_metadata_cc_exe",
      "//build/rust/tests/test_rust_metadata:test_rust_metadata_exe",
      "//build/rust/tests/test_rust_multiple_dep_versions_exe",
      "//build/rust/tests/test_simple_rust_exe",

      # TODO(crbug.com/40226863): Enable the additional target below
      # once `rs_bindings_from_cc` is distributed via `gclient sync`.  In the
      # meantime see the instructions in
      # `//build/rust/run_rs_bindings_from_cc.py`.
      #"test_rs_bindings_from_cc:test_rs_bindings_from_cc",
    ]

    if (target_cpu == "x86") {
      # Some `target_os`s do not support 32-bit platforms anymore.  The
      # selection below is _loosely_ based on `is_valid_x86_target` from
      # the top-level `//BUILD.gn`.
      if (is_win || is_android) {
        deps += [ "//build/rust/tests/test_build_rs_target_arch_x86" ]
      }
    }

    if (!(is_apple && is_official_build)) {
      # TODO: crbug.com/372055517 - Apple lld has an ordering dependency bug
      # when LTO is enabled, and this particular build target runs into that.
      deps += [ "//build/rust/tests/bindgen_cpp_test" ]
    }

    if (enable_chromium_prelude) {
      deps += [ "//build/rust/chromium_prelude:import_test" ]
    }
    if (enable_rust_cxx) {
      deps += [
        "//build/rust/tests/test_cpp_including_rust",
        "//build/rust/tests/test_rust_calling_cpp",
        "//build/rust/tests/test_rust_exe",
        "//build/rust/tests/test_rust_static_library",
      ]
    }
    if (build_with_chromium) {
      # This tests integration with a 3p library that downstream projects
      # don't need to have.
      deps += [ "//build/rust/tests/test_serde_json_lenient" ]
    }

    if (can_build_rust_unit_tests) {
      deps += [
        "//build/rust/tests/bindgen_static_fns_test:bindgen_static_fns_test_lib_unittests",
        "//build/rust/tests/bindgen_test:bindgen_test_lib_unittests",
        "//build/rust/tests/test_aliased_deps:test_aliased_deps_unittests",
        "//build/rust/tests/test_rlib_crate:target1_test_rlib_crate_v0_2_unittests",
        "//build/rust/tests/test_rlib_crate:target2_test_rlib_crate_v0_2_unittests",
        "//build/rust/tests/test_rust_metadata:test_rust_metadata_unittests",
        "//build/rust/tests/test_rust_multiple_dep_versions_exe/v1:test_lib_v1_unittests",
        "//build/rust/tests/test_rust_multiple_dep_versions_exe/v2:test_lib_v2_unittests",
        "//build/rust/tests/test_rust_static_library_non_standard_arrangement:foo_tests",

        # TODO(crbug.com/40226863): Enable the additional target below
        # once `rs_bindings_from_cc` is distributed via `gclient sync`.  In the
        # meantime see the instructions in
        # `//build/rust/run_rs_bindings_from_cc.py`.
        #"test_rs_bindings_from_cc:test_rs_bindings_from_cc_unittests",
      ]

      if (enable_rust_cxx) {
        deps += [
          "//build/rust/tests/test_cpp_including_rust:test_cpp_including_rust_unittests",
          "//build/rust/tests/test_rust_exe:test_rust_exe_unittests",
          "//build/rust/tests/test_rust_static_library:test_rust_static_library_unittests",
          "//build/rust/tests/test_rust_unittests",
        ]
      }
    }

    # Dylibs should only be built in component builds. We turn on flags which
    # are incompatible with shared library compilation in non-component builds
    # (such as code coverage https://crbug.com/1457533).
    if (is_component_build && enable_rust_cxx) {
      deps += [ "//build/rust/tests/test_rust_shared_library" ]
      if (can_build_rust_unit_tests) {
        deps += [ "//build/rust/tests/test_cpp_including_rust:test_cpp_including_rust_dylib_unittests" ]

        # TODO(crbug.com/40266882): The shared library unittest EXE ends up
        # requiring the DLL to run, even though it does not use the DLL.
        if (!is_win && !is_mac) {
          deps += [ "//build/rust/tests/test_rust_shared_library:test_rust_shared_library_unittests" ]
        }
      }
    }

    if (is_win) {
      deps += [ "//build/rust/tests/windows_sys_test" ]
      deps += [ "//build/rust/tests/test_control_flow_guard" ]
    }
  }
}

if (can_build_rust_unit_tests) {
  # Generates a script that will run all the native Rust unit tests, in order
  # to have them all part of a single test step on infra bots.
  rust_unit_tests_group("build_rust_tests") {
    deps = [ ":deps" ]
  }
}