#include "tst_machine.h"
#include "memory.h"

void MachineTests::memory_data() {
    QTest::addColumn<std::uint32_t>("address");

    QTest::newRow("memory begin") << (std::uint32_t)0x00;
    QTest::newRow("memory end") << (std::uint32_t)0xFFFFFFFC;
    QTest::newRow("memory midle start") << (std::uint32_t)0xFFFF00;
    QTest::newRow("memory midle end") << (std::uint32_t)0xFFFFFF;
}

void MachineTests::memory() {
    Memory m;

   QFETCH(std::uint32_t, address);

   // Uninitialize memory should read as zero
   QCOMPARE(m.read_byte(address), (std::uint8_t)0);
   QCOMPARE(m.read_hword(address), (std::uint16_t)0);
   QCOMPARE(m.read_word(address), (std::uint32_t)0);
   // Just a byte
   m.write_byte(address, 0x42);
   QCOMPARE(m.read_byte(address), (std::uint8_t)0x42);
   // Half word
   m.write_hword(address, 0x4243);
   QCOMPARE(m.read_hword(address), (std::uint16_t)0x4243);
   // Word
   m.write_word(address, 0x42434445);
   QCOMPARE(m.read_word(address), (std::uint32_t)0x42434445);
}

void MachineTests::memory_section_data() {
    QTest::addColumn<std::uint32_t>("address");

    QTest::newRow("memory begin") << (std::uint32_t)0x00;
    QTest::newRow("memory end") << (std::uint32_t)0xFFFFFFFF;
    QTest::newRow("memory midle start") << (std::uint32_t)0xFFFF00;
    QTest::newRow("memory midle end") << (std::uint32_t)0xFFFFFF;
}

void MachineTests::memory_section() {
   Memory m;

   QFETCH(std::uint32_t, address);

   // First section shouldn't exists
   QCOMPARE(m.get_section(address, false), (MemorySection*)nullptr);
   // Create section
   MemorySection *s = m.get_section(address, true);
   QVERIFY(s != nullptr);

   // Write some data to memory
   m.write_byte(address, 0x42);
   // Read it trough section (mask bits outside of the memory section)
   QCOMPARE(s->read_byte(address & ((1 << MEMORY_SECTION_BITS)  - 1)), (std::uint8_t)0x42);
   // Write some other data trough section
   s->write_byte(address & ((1 << MEMORY_SECTION_BITS)  - 1), 0x66);
   // Read trough memory
   QCOMPARE(m.read_byte(address), (std::uint8_t)0x66);
}