From 11f2d3cea700662beb95c53a3bdb0119c2e720b1 Mon Sep 17 00:00:00 2001
From: Thomas Harte <thomas.harte@gmail.com>
Date: Mon, 24 Jun 2019 22:12:29 -0400
Subject: [PATCH] Imports EXT tests.

---
 .../Mac/Clock SignalTests/68000Tests.mm       | 60 +++++++++++++++++++
 1 file changed, 60 insertions(+)

diff --git a/OSBindings/Mac/Clock SignalTests/68000Tests.mm b/OSBindings/Mac/Clock SignalTests/68000Tests.mm
index d2f209d86..8480102a5 100644
--- a/OSBindings/Mac/Clock SignalTests/68000Tests.mm	
+++ b/OSBindings/Mac/Clock SignalTests/68000Tests.mm	
@@ -1401,6 +1401,66 @@ class CPU::MC68000::ProcessorStorageTests {
 	XCTAssertEqual(6, _machine->get_cycle_count());
 }
 
+// MARK: EXT
+
+- (void)performEXTwd3:(uint32_t)d3 {
+	_machine->set_program({
+		0x4883		// EXT.W D3
+	});
+
+	auto state = _machine->get_processor_state();
+	state.data[3] = d3;
+	state.status = 0x13;
+
+	_machine->set_processor_state(state);
+	_machine->run_for_instructions(1);
+
+	XCTAssertEqual(4, _machine->get_cycle_count());
+}
+
+- (void)testEXTw_78 {
+	[self performEXTwd3:0x12345678];
+
+	const auto state = _machine->get_processor_state();
+	XCTAssertEqual(state.data[3], 0x12340078);
+	XCTAssertEqual(state.status & Flag::ConditionCodes, Flag::Extend);
+}
+
+- (void)testEXTw_00 {
+	[self performEXTwd3:0x12345600];
+
+	const auto state = _machine->get_processor_state();
+	XCTAssertEqual(state.data[3], 0x12340000);
+	XCTAssertEqual(state.status & Flag::ConditionCodes, Flag::Extend | Flag::Zero);
+}
+
+- (void)testEXTw_f0 {
+	[self performEXTwd3:0x123456f0];
+
+	const auto state = _machine->get_processor_state();
+	XCTAssertEqual(state.data[3], 0x1234fff0);
+	XCTAssertEqual(state.status & Flag::ConditionCodes, Flag::Extend | Flag::Negative);
+}
+
+- (void)testEXTl {
+	_machine->set_program({
+		0x48c3		// EXT.L D3
+	});
+
+	auto state = _machine->get_processor_state();
+	state.data[3] = 0x1234f6f0;
+	state.status = 0x13;
+
+	_machine->set_processor_state(state);
+	_machine->run_for_instructions(1);
+
+	XCTAssertEqual(4, _machine->get_cycle_count());
+
+	state = _machine->get_processor_state();
+	XCTAssertEqual(state.data[3], 0xfffff6f0);
+	XCTAssertEqual(state.status & Flag::ConditionCodes, Flag::Extend | Flag::Negative);
+}
+
 // MARK: JMP
 
 - (void)testJMP_A1 {