mirror of
https://github.com/bazelbuild/bazel-skylib
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92 lines
3.2 KiB
Python
92 lines
3.2 KiB
Python
# Copyright 2017 The Bazel Authors. All rights reserved.
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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"""Unit tests for dicts.bzl."""
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load("//lib:dicts.bzl", "dicts")
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load("//lib:unittest.bzl", "asserts", "unittest")
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def _add_test(ctx):
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"""Unit tests for dicts.add."""
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env = unittest.begin(ctx)
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# Test zero- and one-argument behavior.
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asserts.equals(env, {}, dicts.add())
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asserts.equals(env, {"a": 1}, dicts.add({"a": 1}))
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asserts.equals(env, {"a": 1}, dicts.add(a = 1))
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asserts.equals(env, {"a": 1, "b": 2}, dicts.add({"a": 1}, b = 2))
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# Test simple two-argument behavior.
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asserts.equals(env, {"a": 1, "b": 2}, dicts.add({"a": 1}, {"b": 2}))
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asserts.equals(env, {"a": 1, "b": 2, "c": 3}, dicts.add({"a": 1}, {"b": 2}, c = 3))
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# Test simple more-than-two-argument behavior.
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asserts.equals(
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env,
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{"a": 1, "b": 2, "c": 3, "d": 4},
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dicts.add({"a": 1}, {"b": 2}, {"c": 3}, {"d": 4}),
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)
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asserts.equals(
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env,
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{"a": 1, "b": 2, "c": 3, "d": 4, "e": 5},
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dicts.add({"a": 1}, {"b": 2}, {"c": 3}, {"d": 4}, e = 5),
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)
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# Test same-key overriding.
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asserts.equals(env, {"a": 100}, dicts.add({"a": 1}, {"a": 100}))
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asserts.equals(env, {"a": 100}, dicts.add({"a": 1}, a = 100))
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asserts.equals(env, {"a": 10}, dicts.add({"a": 1}, {"a": 100}, {"a": 10}))
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asserts.equals(env, {"a": 10}, dicts.add({"a": 1}, {"a": 100}, a = 10))
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asserts.equals(
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env,
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{"a": 100, "b": 10},
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dicts.add({"a": 1}, {"a": 100}, {"b": 10}),
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)
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asserts.equals(env, {"a": 10}, dicts.add({"a": 1}, {}, {"a": 10}))
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asserts.equals(env, {"a": 10}, dicts.add({"a": 1}, {}, a = 10))
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asserts.equals(
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env,
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{"a": 10, "b": 5},
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dicts.add({"a": 1}, {"a": 10, "b": 5}),
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)
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asserts.equals(
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env,
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{"a": 10, "b": 5},
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dicts.add({"a": 1}, a = 10, b = 5),
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)
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# Test some other boundary cases.
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asserts.equals(env, {"a": 1}, dicts.add({"a": 1}, {}))
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# Since dictionaries are passed around by reference, make sure that the
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# result of dicts.add is always a *copy* by modifying it afterwards and
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# ensuring that the original argument doesn't also reflect the change. We do
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# this to protect against someone who might attempt to optimize the function
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# by returning the argument itself in the one-argument case.
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original = {"a": 1}
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result = dicts.add(original)
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result["a"] = 2
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asserts.equals(env, 1, original["a"])
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return unittest.end(env)
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add_test = unittest.make(_add_test)
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def dicts_test_suite():
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"""Creates the test targets and test suite for dicts.bzl tests."""
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unittest.suite(
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"dicts_tests",
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add_test,
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)
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