go/chip8-emulator
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some checks to ensure stack consistency

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This commit is contained in:
Jairinho 2022-02-23 16:28:17 -03:00
parent e31a6a3b64
commit da804769c6
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GPG Key ID: 954589B18A21D5B6
1 changed files with 21 additions and 0 deletions
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21
chip8/stack_test.go
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@ -18,6 +18,17 @@ func TestEmulator_StackPush(t *testing.T) {
assert.Equal(t, chip8.StackAddress+2, emulator.SP) assert.Equal(t, chip8.StackAddress+2, emulator.SP)
} }
func TestEmulator_StackPush_Overflow(t *testing.T) {
emulator := chip8.NewEmulator()
defer func() {
assert.Equal(t, "chip8: stack overflow", recover())
}()
emulator.SP = chip8.StackAddress + chip8.StackSize*2
emulator.StackPush()
}
func TestEmulator_StackPop(t *testing.T) { func TestEmulator_StackPop(t *testing.T) {
emulator := chip8.NewEmulator() emulator := chip8.NewEmulator()
@ -29,3 +40,13 @@ func TestEmulator_StackPop(t *testing.T) {
assert.Equal(t, uint16(0xEEFF), emulator.PC) assert.Equal(t, uint16(0xEEFF), emulator.PC)
assert.Equal(t, chip8.StackAddress+30, emulator.SP) assert.Equal(t, chip8.StackAddress+30, emulator.SP)
} }
func TestEmulator_StackPop_Empty(t *testing.T) {
emulator := chip8.NewEmulator()
defer func() {
assert.Equal(t, "chip8: nothing to pop from stack", recover())
}()
emulator.StackPop()
}