diff options
Diffstat (limited to 'src/vm/instruction.test.js')
| -rw-r--r-- | src/vm/instruction.test.js | 39 |
1 files changed, 38 insertions, 1 deletions
diff --git a/src/vm/instruction.test.js b/src/vm/instruction.test.js index 8efa47f..6175ab2 100644 --- a/src/vm/instruction.test.js +++ b/src/vm/instruction.test.js @@ -4,7 +4,7 @@ const { Core } = require('./core.js'); const { DAT, MOV, ADD, SUB, CMP, SLT, - JMP, + JMP, JMZ, JMN, DJN, SPL, } = require('./instruction.js'); @@ -391,3 +391,40 @@ test('JMP correctly jumps', () => { expect(JMP(core, pc, ins)).toEqual([CORESIZE-1]); }); + + +test('JMZ correctly jumps in non-immediate mode', () => { + const core = new Core(CORESIZE); + const pc = 2; + core.data[pc] = { + opcode: 'JMZ', + a: { mode: 'direct', value: -3 }, + b: { mode: 'direct', value: 1 }, + }; + core.data[pc+1] = { + opcode: 'JMZ', + a: { mode: 'direct', value: -3 }, + b: { mode: 'direct', value: 1 }, + }; + const ins = core.data[pc]; + + expect(JMZ(core, pc, ins)).toEqual([pc+1]); + core.data[pc+1].b.value = 0; + expect(JMZ(core, pc, ins)).toEqual([CORESIZE-1]); +}); + + +test('JMZ correctly jumps in immediate mode', () => { + const core = new Core(CORESIZE); + const pc = 2; + core.data[pc] = { + opcode: 'JMZ', + a: { mode: 'direct', value: -3 }, + b: { mode: 'immediate', value: 1 }, + }; + const ins = core.data[pc]; + + expect(JMZ(core, pc, ins)).toEqual([pc+1]); + core.data[pc].b.value = 0; + expect(JMZ(core, pc, ins)).toEqual([CORESIZE-1]); +}); |