mirror of
https://github.com/bazelbuild/bazel-skylib
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b5f4086001
As more things are added, lib.bzl is an anti-pattern as the cost of loading it actually just keeps increasing and most things will never use everything out of it. The pattern the should be used is to directly import the modules one uses.
76 lines
2.5 KiB
Python
76 lines
2.5 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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# 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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# 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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# 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": 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(
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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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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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