| // Copyright 2019 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. |
| |
| package com.google.devtools.build.lib.rules.python; |
| |
| import static com.google.common.truth.Truth.assertThat; |
| |
| import com.google.common.collect.ImmutableMap; |
| import com.google.devtools.build.lib.analysis.ConfiguredTarget; |
| import com.google.devtools.build.lib.analysis.util.BuildViewTestCase; |
| import com.google.devtools.build.lib.cmdline.Label; |
| import com.google.devtools.build.lib.packages.Provider; |
| import com.google.devtools.build.lib.packages.SkylarkProvider; |
| import com.google.devtools.build.lib.packages.StructImpl; |
| import org.junit.Before; |
| import org.junit.Test; |
| import org.junit.runner.RunWith; |
| import org.junit.runners.JUnit4; |
| |
| /** Tests for {@link PyStarlarkTransitions}. */ |
| @RunWith(JUnit4.class) |
| public final class PyStarlarkTransitionsTest extends BuildViewTestCase { |
| |
| @Before |
| public void setUp() throws Exception { |
| scratch.file("myinfo/myinfo.bzl", "MyInfo = provider()"); |
| scratch.file("myinfo/BUILD"); |
| |
| scratch.file( |
| "my_package/my_rule.bzl", |
| "load('//myinfo:myinfo.bzl', 'MyInfo')", |
| "def impl(ctx):", |
| " return MyInfo(", |
| " wrapped = ctx.attr.wrapped,", |
| " )", |
| "my_rule = rule(", |
| " implementation = impl,", |
| " attrs = {", |
| " 'wrapped': attr.label(cfg = py_transitions.cfg),", |
| " 'python_version': attr.string(),", |
| " },", |
| ")", |
| "missing_attr_rule = rule(", |
| " implementation = impl,", |
| " attrs = {", |
| " 'wrapped': attr.label(cfg = py_transitions.cfg),", |
| " },", |
| ")"); |
| |
| scratch.file( |
| "my_package/BUILD", |
| "load('//my_package:my_rule.bzl', 'my_rule', 'missing_attr_rule')", |
| "cc_binary(name = 'wrapped', srcs = ['wrapped.cc'])", |
| "my_rule(name = 'py2', wrapped = ':wrapped', python_version = 'PY2')", |
| "my_rule(name = 'py3', wrapped = ':wrapped', python_version = 'PY3')", |
| "my_rule(name = 'default', wrapped = ':wrapped', python_version = 'DEFAULT')", |
| "my_rule(name = 'invalid', wrapped = ':wrapped', python_version = 'invalid')", |
| "missing_attr_rule(name = 'missing_attr', wrapped = ':wrapped')"); |
| setSkylarkSemanticsOptions("--experimental_google_legacy_api"); |
| } |
| |
| @Test |
| public void testTransitionToPY2() throws Exception { |
| useConfiguration("--python_version=PY3"); |
| verifyVersion("//my_package:py2", PythonVersion.PY2); |
| } |
| |
| @Test |
| public void testTransitionToPY3() throws Exception { |
| useConfiguration("--python_version=PY2"); |
| verifyVersion("//my_package:py3", PythonVersion.PY3); |
| } |
| |
| @Test |
| public void testTransitionToDefault() throws Exception { |
| useConfiguration("--python_version=PY2", "--incompatible_py3_is_default=true"); |
| verifyVersion("//my_package:default", PythonVersion.PY3); |
| } |
| |
| @Test |
| public void testNoPythonVersionAttribute() throws Exception { |
| useConfiguration("--python_version=PY3", "--incompatible_py3_is_default=false"); |
| // Make sure no errors occur for invalid values, and no transition is applied. |
| verifyVersion("//my_package:missing_attr", PythonVersion.PY3); |
| } |
| |
| @Test |
| public void testInvalidPythonVersionAttribute() throws Exception { |
| useConfiguration("--python_version=PY2", "--incompatible_py3_is_default=true"); |
| // Make sure no errors occur for missing python_version attribute, and no transition is applied. |
| verifyVersion("//my_package:invalid", PythonVersion.PY2); |
| } |
| |
| private void verifyVersion(String target, PythonVersion version) throws Exception { |
| ConfiguredTarget configuredTarget = getConfiguredTarget(target); |
| Provider.Key key = |
| new SkylarkProvider.SkylarkKey( |
| Label.parseAbsolute("//myinfo:myinfo.bzl", ImmutableMap.of()), "MyInfo"); |
| StructImpl myInfo = (StructImpl) configuredTarget.get(key); |
| ConfiguredTarget wrapped = (ConfiguredTarget) myInfo.getValue("wrapped"); |
| PythonOptions wrappedPythonOptions = |
| getConfiguration(wrapped).getOptions().get(PythonOptions.class); |
| assertThat(wrappedPythonOptions.pythonVersion).isEqualTo(version); |
| } |
| } |