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bazel-skylib/tests/partial_tests.bzl
László Csomor daf5137022
unittest.bzl: supports Windows (#84)
In this commit:

- change unittest.bzl to declare a named output
  file instead of relying on the deprecated [1]
  default output name (ctx.outputs.executable).

- define a new toolchain_type and toolchain rules
  for cmd.exe and for Bash (basically Windows and
  non-Windows)

- register the new toolchains in workspace.bzl

- let unittest.make-created test rules require the
  new toolchain_type

- write the test output script as a Windows batch
  script or as a Shell script, depending on the
  selected toolchain

This PR enables the Bazel team to break the Bash
dependency (for test execution) on Windows, and
can run Starlark unittests with the new,
Windows-native test wrapper (still under
development).

See https://github.com/bazelbuild/bazel/issues/5508
2018-12-04 16:14:08 +01:00

85 lines
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Python

# Copyright 2018 The Bazel Authors. 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.
"""Unit tests for partial.bzl."""
load("//lib:partial.bzl", "partial")
load("//lib:unittest.bzl", "asserts", "unittest")
def _make_noargs_nokwargs():
"""Test utility for no args no kwargs case"""
return 1
def _make_args_nokwargs(arg1, arg2, arg3):
"""Test utility for args no kwargs case"""
return arg1 + arg2 + arg3
def _make_args_kwargs(arg1, arg2, arg3, **kwargs):
"""Test utility for args and kwargs case"""
return arg1 + arg2 + arg3 + kwargs["x"] + kwargs["y"]
def _call_noargs_nokwargs(call_arg1):
"""Test utility no args no kwargs case where values passed from call site"""
return call_arg1
def _call_args_nokwargs(func_arg1, call_arg1):
"""Test utility for args no kwargs case where values passed from call site"""
return func_arg1 + call_arg1
def _call_args_kwargs(func_arg1, call_arg1, func_mult, call_mult):
"""Test utility for args and kwargs case where values passed from call site"""
return (func_arg1 + call_arg1) * func_mult * call_mult
def _make_call_test(ctx):
"""Unit tests for partial.make and partial.call."""
env = unittest.begin(ctx)
# Test cases where there are no args (or kwargs) at the make site, only
# at the call site.
foo = partial.make(_make_noargs_nokwargs)
asserts.equals(env, 1, partial.call(foo))
foo = partial.make(_make_args_nokwargs)
asserts.equals(env, 6, partial.call(foo, 1, 2, 3))
foo = partial.make(_make_args_kwargs)
asserts.equals(env, 15, partial.call(foo, 1, 2, 3, x = 4, y = 5))
# Test cases where there are args (and/or kwargs) at the make site and the
# call site.
foo = partial.make(_call_noargs_nokwargs, 100)
asserts.equals(env, 100, partial.call(foo))
foo = partial.make(_call_args_nokwargs, 100)
asserts.equals(env, 112, partial.call(foo, 12))
foo = partial.make(_call_args_kwargs, 100, func_mult = 10)
asserts.equals(env, 2240, partial.call(foo, 12, call_mult = 2))
# Test case where there are args and kwargs ath the make site, and the call
# site overrides some make site args.
foo = partial.make(_call_args_kwargs, 100, func_mult = 10)
asserts.equals(env, 1120, partial.call(foo, 12, func_mult = 5, call_mult = 2))
return unittest.end(env)
make_call_test = unittest.make(_make_call_test)
def partial_test_suite():
"""Creates the test targets and test suite for partial.bzl tests."""
unittest.suite(
"partial_tests",
make_call_test,
)