/*
 * Utils_test.cpp
 *
 *  Created on: Mar 14, 2014
 *      Author: jonny
 */

#include <gtest/gtest.h>
#include "core/utils/Utils.h"
#include "core/utils/RingBuffer.h"

//using namespace testing;

namespace core {

TEST(UtilsTest, clkAlignWorks)
{
	sc_time clk(6, SC_NS);
	sc_time aligned = 2* clk;
	sc_time not_aligned = 2.5*clk;

	EXPECT_EQ(aligned, clkAlign(aligned, clk, Alignment::UP));
	EXPECT_EQ(aligned, clkAlign(aligned, clk, Alignment::DOWN));
	EXPECT_EQ(aligned+clk, clkAlign(not_aligned, clk, Alignment::UP));
	EXPECT_EQ(aligned+clk, clkAlign(not_aligned, clk));
	EXPECT_EQ(aligned, clkAlign(not_aligned, clk, Alignment::DOWN));
}

TEST(UtilsTest, isClkAlignedWorks)
{
	sc_time clk(6, SC_NS);
	sc_time aligned = 2*clk;
	sc_time not_aligned = 2.5 * clk;

	EXPECT_TRUE(isClkAligned(aligned, clk));
	EXPECT_FALSE(isClkAligned(not_aligned, clk));
}

TEST(UtilsTest, delayByConstraintWorks)
{
	sc_time start(10, SC_NS);
	sc_time previous(8, SC_NS);
	sc_time constraint(4, SC_NS);

	EXPECT_EQ(sc_time(2, SC_NS), delayByConstraint(previous, start, constraint));
	EXPECT_EQ(sc_time(4, SC_NS), delayByConstraint(previous, sc_time(8, SC_NS), constraint));
	EXPECT_EQ(sc_time(6, SC_NS), delayByConstraint(previous, sc_time(6, SC_NS), constraint));
	EXPECT_EQ(sc_time(0, SC_NS), delayByConstraint(previous, sc_time(12, SC_NS), constraint));
	EXPECT_EQ(sc_time(0, SC_NS), delayByConstraint(previous, sc_time(14, SC_NS), constraint));
}

TEST(UtilsTest, RingBufferWorks)
{
	RingBuffer<int> buffer(4);
	EXPECT_TRUE(buffer.isEmpty());
	EXPECT_EQ(0, buffer.getSize());
	EXPECT_DEATH(buffer.get(0), ".*");
	EXPECT_FALSE(buffer.isFull());
	buffer.put(3);
	EXPECT_EQ(1, buffer.getSize());
	EXPECT_FALSE(buffer.isFull());
	buffer.put(5);
	buffer.put(4);
	EXPECT_EQ(4, buffer.getNewest());
	EXPECT_EQ(3, buffer.getOldest());
	EXPECT_FALSE(buffer.isFull());
	buffer.put(9);
	buffer.put(10);
	EXPECT_EQ(10, buffer.getNewest());
	EXPECT_EQ(5, buffer.getOldest());
	EXPECT_EQ(9, buffer.get(2));
	EXPECT_TRUE(buffer.isFull());
}

TEST(UtilsTest,getBurstLengthInBytesWorks)
{
	//tlm::tlm_generic_payload payload;
//	payload.set_data_length(4);
//	EXPECT_EQ(4,getBurstLengthInBytes(payload,128));
}

} /* namespace controller */