59 lines
2.3 KiB
Plaintext
59 lines
2.3 KiB
Plaintext
# This file defines a template for adding a unittest binary.
|
|
#
|
|
# It's a thin wrapper around GN's built-in executable() target type and
|
|
# accepts the same parameters, and in addition this paramater:
|
|
#
|
|
# has_custom_main (optional)
|
|
# [bool] If set, link against gtest instead of UnitTestMain; for tests
|
|
# that define their own main() function.
|
|
#
|
|
# Example use:
|
|
#
|
|
# unittest("FormatTest") {
|
|
# sources = [ ... ]
|
|
# ...
|
|
# }
|
|
|
|
template("unittest") {
|
|
executable(target_name) {
|
|
has_custom_main = false # Default value.
|
|
|
|
# Foward everything (has_custom_main if set; configs, sources, deps, ...).
|
|
forward_variables_from(invoker, "*")
|
|
assert(!defined(invoker.output_dir), "cannot set unittest output_dir")
|
|
assert(!defined(invoker.testonly), "cannot set unittest testonly")
|
|
|
|
# Common settings for all unit tests.
|
|
# Unit test binaries shouldn't go right in out/gn/bin, for two reasons:
|
|
# 1. That's where production binaries go.
|
|
# 2. The CMake build doesn't put the unit tests of all projects (clang,
|
|
# lld,...) in one directory, so it's not guaranteed that there won't
|
|
# be name collisions between test binaries from separate projects.
|
|
# Each lit suite takes an foo_obj_root parameter and puts temporary files
|
|
# for lit tests at foo_obj_root/test and looks for unit test binaries
|
|
# below foo_obj_root/unittests. As long as the BUILD.gn files processing
|
|
# the lit.site.cfg.py.in files match the output dir here, it doesn't
|
|
# matter all that much where the unit test binaries go, with the weak
|
|
# constraints that test binaries of different projects should go in
|
|
# different folders, and that it's not too difficult to manually
|
|
# run the unit test binary if necessary. Using target_out_dir here
|
|
# means that //clang/unittests/Format gets its binary in
|
|
# out/gn/obj/clang/unittests/Format/FormatTests, which seems fine.
|
|
#
|
|
# If you change output_dir here, look through
|
|
# `git grep target_out_dir '*/unittests/*'` and update those too.
|
|
output_dir = target_out_dir
|
|
|
|
if (has_custom_main) {
|
|
deps += [ "//third-party/unittest:gtest" ]
|
|
} else {
|
|
deps += [ "//third-party/unittest/UnitTestMain" ]
|
|
}
|
|
testonly = true
|
|
}
|
|
}
|
|
|
|
set_defaults("unittest") {
|
|
configs = shared_binary_target_configs
|
|
}
|