101 lines
2.7 KiB
Java
101 lines
2.7 KiB
Java
package android.emu6502;
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import com.google.common.collect.ImmutableList;
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import android.emu6502.instructions.Symbols;
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import org.junit.Before;
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import org.junit.Test;
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import java.util.List;
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import static org.hamcrest.CoreMatchers.equalTo;
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import static org.junit.Assert.assertThat;
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public class AssemblerTest {
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private Assembler assembler;
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@Before public void setUp() {
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assembler = new Assembler(new Memory(new Display()), new Symbols());
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}
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@Test public void testSimple() {
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List<String> lines = ImmutableList.of(
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"LDA #$01",
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"STA $0200",
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"LDA #$05",
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"STA $0201",
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"LDA #$08",
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"STA $0202");
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assembler.assembleCode(lines);
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assertThat(assembler.hexdump(), equalTo("0600: A9 01 8D 00 02 A9 05 8D 01 02 A9 08 8D 02 02"));
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}
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@Test public void testWithComments() {
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List<String> lines = ImmutableList.of(
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"LDA #$c0 ;Load the hex value $c0 into the A register",
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"TAX ;Transfer the value in the A register to X",
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"INX ;Increment the value in the X register",
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"ADC #$c4 ;Add the hex value $c4 to the A register",
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"BRK ;Break - we're done");
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assembler.assembleCode(lines);
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assertThat(assembler.hexdump(), equalTo("0600: A9 C0 AA E8 69 C4 00"));
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}
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@Test public void testBranchAndLabel() {
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List<String> lines = ImmutableList.of(
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"LDX #$08",
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"decrement:",
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"DEX",
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"STX $0200",
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"CPX #$03",
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"BNE decrement",
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"STX $0201",
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"BRK");
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assembler.assembleCode(lines);
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assertThat(assembler.hexdump(), equalTo("0600: A2 08 CA 8E 00 02 E0 03 D0 F8 8E 01 02 00"));
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}
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@Test public void testRelative() {
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List<String> lines = ImmutableList.of(
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"LDA #$01",
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"CMP #$02",
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"BNE notequal",
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"STA $22",
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"notequal:",
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"BRK");
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assembler.assembleCode(lines);
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assertThat(assembler.hexdump(), equalTo("0600: A9 01 C9 02 D0 02 85 22 00"));
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}
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@Test public void testIndirect() {
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List<String> lines = ImmutableList.of(
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"LDA #$01",
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"STA $f0",
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"LDA #$cc",
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"STA $f1",
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"JMP ($00f0) ;dereferences to $cc01");
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assembler.assembleCode(lines);
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assertThat(assembler.hexdump(), equalTo("0600: A9 01 85 F0 A9 CC 85 F1 6C F0 00"));
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}
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@Test public void testIndexedIndirect() {
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List<String> lines = ImmutableList.of(
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"LDX #$01",
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"LDA #$05",
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"STA $01",
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"LDA #$06",
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"STA $02",
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"LDY #$0a",
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"STY $0605",
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"LDA ($00,X)");
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assembler.assembleCode(lines);
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assertThat(assembler.hexdump(),
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equalTo("0600: A2 01 A9 05 85 01 A9 06 85 02 A0 0A 8C 05 06 A1 \n0610: 00"));
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}
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}
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