core/tests/RingBufferTests.cpp

#include "tests/RingBufferTests.h"

#include "data/RingBuffer.h"
#include "test/Test.h"

static void testReadAndWrite() {
    Core::RingBuffer<int, 5> buffer;
    CORE_TEST_FALSE(buffer.canRemove());
    CORE_TEST_EQUAL(0, buffer.getLength());
    buffer.add(4);
    CORE_TEST_EQUAL(1, buffer.getLength());
    CORE_TEST_TRUE(buffer.canRemove());
    CORE_TEST_EQUAL(4, buffer[0]);
    CORE_TEST_FALSE(buffer.remove());
    CORE_TEST_FALSE(buffer.canRemove());
    CORE_TEST_EQUAL(0, buffer.getLength());
}

static void testOverflow() {
    Core::RingBuffer<int, 3> buffer;
    bool r1 = buffer.add(1);
    bool r2 = buffer.add(2);
    bool r3 = buffer.add(3);
    bool r4 = buffer.add(4);
    bool r5 = buffer.add(5);
    CORE_TEST_EQUAL(3, buffer.getLength());
    CORE_TEST_FALSE(r1);
    CORE_TEST_FALSE(r2);
    CORE_TEST_FALSE(r3);
    CORE_TEST_TRUE(r4);
    CORE_TEST_TRUE(r5);
    CORE_TEST_EQUAL(1, buffer[0]);
    CORE_TEST_FALSE(buffer.remove());
    CORE_TEST_EQUAL(2, buffer.getLength());
    CORE_TEST_EQUAL(2, buffer[0]);
    CORE_TEST_FALSE(buffer.remove());
    CORE_TEST_EQUAL(1, buffer.getLength());
    CORE_TEST_EQUAL(3, buffer[0]);
    CORE_TEST_FALSE(buffer.remove());
    CORE_TEST_FALSE(buffer.canRemove());
    CORE_TEST_EQUAL(0, buffer.getLength());
}

static void testRefill() {
    Core::RingBuffer<int, 3> buffer;
    buffer.add(1);
    buffer.add(2);
    buffer.add(3);
    buffer.add(4);
    CORE_TEST_EQUAL(3, buffer.getLength());
    CORE_TEST_TRUE(buffer.canRemove());
    CORE_TEST_EQUAL(1, buffer[0]);
    CORE_TEST_FALSE(buffer.remove());
    CORE_TEST_EQUAL(2, buffer[0]);
    CORE_TEST_FALSE(buffer.remove());
    CORE_TEST_EQUAL(3, buffer[0]);
    CORE_TEST_FALSE(buffer.remove());
    CORE_TEST_EQUAL(0, buffer.getLength());

    CORE_TEST_FALSE(buffer.canRemove());
    buffer.add(5);
    buffer.add(6);
    CORE_TEST_EQUAL(2, buffer.getLength());
    CORE_TEST_TRUE(buffer.canRemove());
    CORE_TEST_EQUAL(5, buffer[0]);
    CORE_TEST_FALSE(buffer.remove());
    CORE_TEST_EQUAL(6, buffer[0]);
    CORE_TEST_FALSE(buffer.remove());
    CORE_TEST_FALSE(buffer.canRemove());
    CORE_TEST_EQUAL(0, buffer.getLength());
}

static void testClear() {
    Core::RingBuffer<int, 3> buffer;
    buffer.add(1);
    buffer.add(2);
    CORE_TEST_EQUAL(2, buffer.getLength());
    buffer.clear();
    CORE_TEST_FALSE(buffer.canRemove());
    CORE_TEST_EQUAL(0, buffer.getLength());
}

void Core::RingBufferTests::test() {
    testReadAndWrite();
    testOverflow();
    testRefill();
    testClear();
}