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# Copyright 2017 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 dicts.bzl."""
load("//lib:dicts.bzl", "dicts")
load("//lib:unittest.bzl", "asserts", "unittest")
def _add_test(ctx):
"""Unit tests for dicts.add."""
env = unittest.begin(ctx)
# Test zero- and one-argument behavior.
asserts.equals(env, {}, dicts.add())
asserts.equals(env, {"a": 1}, dicts.add({"a": 1}))
asserts.equals(env, {"a": 1}, dicts.add(a = 1))
asserts.equals(env, {"a": 1, "b": 2}, dicts.add({"a": 1}, b = 2))
# Test simple two-argument behavior.
asserts.equals(env, {"a": 1, "b": 2}, dicts.add({"a": 1}, {"b": 2}))
asserts.equals(env, {"a": 1, "b": 2, "c": 3}, dicts.add({"a": 1}, {"b": 2}, c = 3))
# Test simple more-than-two-argument behavior.
asserts.equals(
env,
{"a": 1, "b": 2, "c": 3, "d": 4},
dicts.add({"a": 1}, {"b": 2}, {"c": 3}, {"d": 4}),
)
asserts.equals(
env,
{"a": 1, "b": 2, "c": 3, "d": 4, "e": 5},
dicts.add({"a": 1}, {"b": 2}, {"c": 3}, {"d": 4}, e = 5),
)
# Test same-key overriding.
asserts.equals(env, {"a": 100}, dicts.add({"a": 1}, {"a": 100}))
asserts.equals(env, {"a": 100}, dicts.add({"a": 1}, a = 100))
asserts.equals(env, {"a": 10}, dicts.add({"a": 1}, {"a": 100}, {"a": 10}))
asserts.equals(env, {"a": 10}, dicts.add({"a": 1}, {"a": 100}, a = 10))
asserts.equals(
env,
{"a": 100, "b": 10},
dicts.add({"a": 1}, {"a": 100}, {"b": 10}),
)
asserts.equals(env, {"a": 10}, dicts.add({"a": 1}, {}, {"a": 10}))
asserts.equals(env, {"a": 10}, dicts.add({"a": 1}, {}, a = 10))
asserts.equals(
env,
{"a": 10, "b": 5},
dicts.add({"a": 1}, {"a": 10, "b": 5}),
)
asserts.equals(
env,
{"a": 10, "b": 5},
dicts.add({"a": 1}, a = 10, b = 5),
)
# Test some other boundary cases.
asserts.equals(env, {"a": 1}, dicts.add({"a": 1}, {}))
# Since dictionaries are passed around by reference, make sure that the
# result of dicts.add is always a *copy* by modifying it afterwards and
# ensuring that the original argument doesn't also reflect the change. We do
# this to protect against someone who might attempt to optimize the function
# by returning the argument itself in the one-argument case.
original = {"a": 1}
result = dicts.add(original)
result["a"] = 2
asserts.equals(env, 1, original["a"])
return unittest.end(env)
add_test = unittest.make(_add_test)
def _omit_test(ctx):
"""Unit tests for dicts.omit."""
env = unittest.begin(ctx)
# Test empty dict, empty list.
asserts.equals(env, {}, dicts.omit({}, []))
# Test empty dict, nonempty list.
asserts.equals(env, {}, dicts.omit({}, ["a"]))
# Test nonempty dict, empty list.
asserts.equals(env, {"a": 1}, dicts.omit({"a": 1}, []))
# Test key in dict.
asserts.equals(env, {}, dicts.omit({"a": 1}, ["a"]))
# Test key not in dict.
asserts.equals(env, {"a": 1}, dicts.omit({"a": 1}, ["b"]))
# Since dictionaries are passed around by reference, make sure that the
# result of dicts.omit is always a *copy* by modifying it afterwards and
# ensuring that the original argument doesn't also reflect the change. We do
# this to protect against someone who might attempt to optimize the function
# by returning the argument itself in the empty list case.
original = {"a": 1}
result = dicts.omit(original, [])
result["a"] = 2
asserts.equals(env, 1, original["a"])
return unittest.end(env)
omit_test = unittest.make(_omit_test)
def _pick_test(ctx):
"""Unit tests for dicts.pick."""
env = unittest.begin(ctx)
# Test empty dict, empty list.
asserts.equals(env, {}, dicts.pick({}, []))
# Test empty dict, nonempty list.
asserts.equals(env, {}, dicts.pick({}, ["a"]))
# Test nonempty dict, empty list.
asserts.equals(env, {}, dicts.pick({"a": 1}, []))
# Test key in dict.
asserts.equals(env, {"a": 1}, dicts.pick({"a": 1}, ["a"]))
# Test key not in dict.
asserts.equals(env, {}, dicts.pick({"a": 1}, ["b"]))
# Since dictionaries are passed around by reference, make sure that the
# result of dicts.pick is always a *copy* by modifying it afterwards and
# ensuring that the original argument doesn't also reflect the change. We do
# this to protect against someone who might attempt to optimize the function
# by returning the argument itself.
original = {"a": 1}
result = dicts.pick(original, ["a"])
result["a"] = 2
asserts.equals(env, 1, original["a"])
return unittest.end(env)
pick_test = unittest.make(_pick_test)
def dicts_test_suite():
"""Creates the test targets and test suite for dicts.bzl tests."""
unittest.suite(
"dicts_tests",
add_test,
omit_test,
pick_test,
)
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