58 lines
1.4 KiB
C++
58 lines
1.4 KiB
C++
#include <gtest/gtest.h>
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#include <sled/futures/promise.h>
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TEST(Promise, Basic)
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{
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auto p = sled::Promise<int>();
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auto v = p.Then([](int v) {
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EXPECT_EQ(v, 1);
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return v + 10;
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})
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.Tap([](int v) {
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EXPECT_EQ(v, 11);
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// no effect
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return v + 1;
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})
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.Then([](int v) {
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EXPECT_EQ(v, 11);
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return v + 10;
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});
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p.Resolve(1);
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}
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TEST(Future, Basic)
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{
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auto p = sled::Promise<int>();
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auto future = p.GetFuture()
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.Then([](int v) {
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EXPECT_EQ(v, 1);
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return v + 10;
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})
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.Then([](int v) {
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EXPECT_EQ(v, 11);
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return v + 10;
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});
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p.Resolve(1);
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EXPECT_EQ(future.Get(), 21);
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}
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TEST(Future, Except)
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{
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auto p = sled::Promise<int>();
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p.Resolve(1);
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p.GetFuture()
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.Then([](int) {
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return 1;
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// throw std::runtime_error("test");
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})
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.Except([](std::exception_ptr e) {
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try {
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std::rethrow_exception(e);
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} catch (const std::exception &e) {
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EXPECT_STREQ(e.what(), "test");
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}
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return false;
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})
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.Get();
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}
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