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# Copyright 2022 Google LLC. All rights reserved.
#
# Licensed under the Apache License, Version 2.0 (the License);
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
"""kt_testing_rules"""
load("//:visibility.bzl", "RULES_KOTLIN")
load("@bazel_skylib//lib:unittest.bzl", "analysistest", "asserts")
load(":analysis.bzl", "kt_analysis")
visibility(RULES_KOTLIN)
# Mark targets that's aren't expected to build, but are needed for analysis test assertions.
_ONLY_FOR_ANALYSIS_TAGS = ["manual", "nobuilder", "notap"]
def _wrap_for_analysis(inner_rule):
"""Wrap an existing rule to make it easier to use in analysis tests.
Args:
inner_rule: [rule|macro]
Returns:
[macro] Calls inner_rule with appropate tags, returning the target name
"""
def wrapper(name, tags = [], **kwargs):
inner_rule(
name = name,
tags = tags + _ONLY_FOR_ANALYSIS_TAGS,
**kwargs
)
return name
return wrapper
_assert_failure_test = analysistest.make(
impl = lambda ctx: _assert_failure_test_impl(ctx),
expect_failure = True,
attrs = dict(
msg_contains = attr.string(mandatory = True),
),
)
def _assert_failure_test_impl(ctx):
kt_analysis.check_endswith_test(ctx)
env = analysistest.begin(ctx)
asserts.expect_failure(env, ctx.attr.msg_contains)
return analysistest.end(env)
_coverage_instrumentation_test = analysistest.make(
impl = lambda ctx: _coverage_instrumentation_test_impl(ctx),
attrs = dict(
expected_instrumented_file_names = attr.string_list(),
),
config_settings = {
"//command_line_option:collect_code_coverage": "1",
"//command_line_option:instrument_test_targets": "1",
"//command_line_option:instrumentation_filter": "+",
},
)
def _coverage_instrumentation_test_impl(ctx):
env = analysistest.begin(ctx)
target_under_test = analysistest.target_under_test(env)
instrumented_files_info = target_under_test[InstrumentedFilesInfo]
instrumented_files = instrumented_files_info.instrumented_files.to_list()
asserts.equals(
env,
ctx.attr.expected_instrumented_file_names,
[file.basename for file in instrumented_files],
)
return analysistest.end(env)
def _create_file(name, content = ""):
"""Declare a generated file with optional content.
Args:
name: [string] The relative file path
content: [string]
Returns:
[File] The label of the file
"""
if content.startswith("\n"):
content = content[1:-1]
native.genrule(
name = "gen_" + name,
outs = [name],
cmd = """
cat > $@ <<EOF
%s
EOF
""" % content,
)
return name
_create_dir = rule(
implementation = lambda ctx: _create_dir_impl(ctx),
attrs = dict(
subdir = attr.string(),
srcs = attr.label_list(allow_files = True),
),
)
def _create_dir_impl(ctx):
dir = ctx.actions.declare_directory(ctx.attr.name)
command = "mkdir -p {0} " + ("&& cp {1} {0}" if ctx.files.srcs else "# {1}")
ctx.actions.run_shell(
command = command.format(
dir.path + "/" + ctx.attr.subdir,
" ".join([s.path for s in ctx.files.srcs]),
),
inputs = ctx.files.srcs,
outputs = [dir],
)
return [DefaultInfo(files = depset([dir]))]
kt_testing_rules = struct(
# go/keep-sorted start
ONLY_FOR_ANALYSIS_TAGS = _ONLY_FOR_ANALYSIS_TAGS,
assert_failure_test = _assert_failure_test,
coverage_instrumentation_test = _coverage_instrumentation_test,
create_dir = _wrap_for_analysis(_create_dir),
create_file = _create_file,
wrap_for_analysis = _wrap_for_analysis,
# go/keep-sorted end
)
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