Seth J. Morabito
ac88786df7
- Device read and write may now throw MemoryAccessException, and appropriate throws clauses have been added throughout the code.
124 lines
3.6 KiB
Java
124 lines
3.6 KiB
Java
package com.loomcom.symon;
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import junit.framework.*;
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import com.loomcom.symon.devices.*;
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import com.loomcom.symon.exceptions.*;
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/**
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*
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*/
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public class BusTest extends TestCase {
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public BusTest(String testName) {
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super(testName);
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}
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public static Test suite() {
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return new TestSuite(BusTest.class);
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}
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public void testCreatingWithStartAndEndAddresses() {
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Bus b = null;
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b = new Bus(0x00, 0xff);
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assertEquals(0x00, b.startAddress());
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assertEquals(0xff, b.endAddress());
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b = new Bus(0x20, 0xea);
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assertEquals(0x20, b.startAddress());
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assertEquals(0xea, b.endAddress());
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}
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public void testCreatingWithSize() {
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Bus b = null;
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b = new Bus(256);
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assertEquals(0x00, b.startAddress());
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assertEquals(0xff, b.endAddress());
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b = new Bus(4096);
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assertEquals(0x000, b.startAddress());
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assertEquals(0xfff, b.endAddress());
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b = new Bus(65536);
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assertEquals(0x0000, b.startAddress());
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assertEquals(0xffff, b.endAddress());
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}
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public void testAddDevice() throws MemoryRangeException {
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Device memory = new Memory(0x0000, 0x0100, true);
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Device rom = new Memory(0x0100, 0x0200, false);
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Bus b = new Bus(0x0000, 0xffff);
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assertEquals(0, b.getDevices().size());
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b.addDevice(memory);
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assertEquals(1, b.getDevices().size());
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b.addDevice(rom);
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assertEquals(2, b.getDevices().size());
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}
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public void testOverlappingDevicesShouldFail() throws MemoryRangeException {
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Device memory = new Memory(0x0000, 0x0100, true);
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Device rom = new Memory(0x00ff, 0x0200, false);
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Bus b = new Bus(0x0000, 0xffff);
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b.addDevice(memory);
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try {
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b.addDevice(rom);
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fail("Should have thrown a MemoryRangeException.");
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} catch (MemoryRangeException ex) {
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// expected
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}
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}
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public void testIsCompleteWithFirstDeviceNotStartingAtStartAddress() throws MemoryRangeException {
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Device memory = new Memory(0x00ff, 0xff00, true);
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Bus b = new Bus(0x0000, 0xffff);
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assertFalse("Address space was unexpectedly complete!", b.isComplete());
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b.addDevice(memory);
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assertFalse("Address space was unexpectedly complete!", b.isComplete());
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}
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public void testIsCompleteWithOneDevice() throws MemoryRangeException {
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Device memory = new Memory(0x0000, 0x10000, true);
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Bus b = new Bus(0x0000, 0xffff);
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assertFalse("Address space was unexpectedly complete!", b.isComplete());
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b.addDevice(memory);
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assertTrue("Address space should have been complete!", b.isComplete());
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}
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public void testIsCompleteWithTwoDevices() throws MemoryRangeException {
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Device memory = new Memory(0x0000, 0x8000, true);
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Device rom = new Memory(0x8000, 0x8000, false);
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Bus b = new Bus(0x0000, 0xffff);
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assertFalse("Address space was unexpectedly complete!", b.isComplete());
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b.addDevice(memory);
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assertFalse("Address space was unexpectedly complete!", b.isComplete());
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b.addDevice(rom);
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assertTrue("Address space should have been complete!", b.isComplete());
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}
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public void testIsCompleteWithThreeDevices() throws MemoryRangeException {
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Device memory = new Memory(0x0000, 0x8000, true);
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Device rom1 = new Memory(0x8000, 0x4000, false);
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Device rom2 = new Memory(0xC000, 0x4000, false);
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Bus b = new Bus(0x0000, 0xffff);
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assertFalse("Address space was unexpectedly complete!", b.isComplete());
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b.addDevice(memory);
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assertFalse("Address space was unexpectedly complete!", b.isComplete());
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b.addDevice(rom1);
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assertFalse("Address space was unexpectedly complete!", b.isComplete());
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b.addDevice(rom2);
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assertTrue("Address space should have been complete!", b.isComplete());
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}
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}
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