43 lines
1.2 KiB
C++
43 lines
1.2 KiB
C++
#include "ring_buffer.h"
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#include <gmock/gmock.h>
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#include <gtest/gtest.h>
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#include <array>
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using namespace ::testing;
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TEST(RingBuffer, BasicStoreLoad) {
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std::array<char, 20> arr;
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RingBuffer rb{.buffer = std::as_writable_bytes(std::span{arr})};
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std::array<char, 10> a0 = {0, 1, 2, 3, 4, 5, 6, 7, 8, 9};
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std::array<char, 10> a1 = {};
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ASSERT_TRUE(rb.Store(std::as_bytes(std::span{a0})));
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ASSERT_TRUE(rb.Load(std::as_writable_bytes(std::span{a1})));
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EXPECT_THAT(a1, ElementsAre(0, 1, 2, 3, 4, 5, 6, 7, 8, 9));
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}
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TEST(RingBuffer, StoreOverflow) {
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std::array<char, 10> arr;
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RingBuffer rb{.buffer = std::as_writable_bytes(std::span{arr})};
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std::array<char, 8> a0 = {0, 1, 2, 3, 4, 5, 6, 7};
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std::array<char, 8> a1 = {};
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ASSERT_TRUE(rb.Store(std::as_bytes(std::span{a0})));
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ASSERT_FALSE(rb.Store(std::as_bytes(std::span{a0})));
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EXPECT_EQ(rb.AvailableData(), 8);
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ASSERT_TRUE(rb.Pop(7));
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EXPECT_EQ(rb.AvailableData(), 1);
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EXPECT_TRUE(rb.Store(std::as_bytes(std::span{a0})));
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ASSERT_TRUE(rb.Load(std::as_writable_bytes(std::span{a1})));
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// one byte leftover from first run, then 7 more
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EXPECT_THAT(a1, ElementsAre(7, 0, 1, 2, 3, 4, 5, 6));
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}
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