52 lines
1.2 KiB
C++
52 lines
1.2 KiB
C++
//===-- FunctionTests.cpp -------------------------------------------------===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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#include "support/Function.h"
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#include "gmock/gmock.h"
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#include "gtest/gtest.h"
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namespace clang {
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namespace clangd {
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namespace {
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TEST(EventTest, Subscriptions) {
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Event<int> E;
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int N = 0;
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{
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Event<int>::Subscription SubA;
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// No subscriptions are active.
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E.broadcast(42);
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EXPECT_EQ(0, N);
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Event<int>::Subscription SubB = E.observe([&](int) { ++N; });
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// Now one is active.
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E.broadcast(42);
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EXPECT_EQ(1, N);
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SubA = E.observe([&](int) { ++N; });
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// Both are active.
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EXPECT_EQ(1, N);
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E.broadcast(42);
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EXPECT_EQ(3, N);
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SubA = std::move(SubB);
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// One is active.
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EXPECT_EQ(3, N);
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E.broadcast(42);
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EXPECT_EQ(4, N);
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}
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// None are active.
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EXPECT_EQ(4, N);
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E.broadcast(42);
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EXPECT_EQ(4, N);
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}
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} // namespace
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} // namespace clangd
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} // namespace clang
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