//
//  m68kDecoderTests.m
//  Clock Signal
//
//  Created by Thomas Harte on 18/04/2022.
//  Copyright 2022 Thomas Harte. All rights reserved.
//

#import <XCTest/XCTest.h>

#include "../../../InstructionSets/68k/Decoder.hpp"

using namespace InstructionSet::M68k;

@interface m68kDecoderTests : XCTestCase
@end

@implementation m68kDecoderTests

- (void)testInstructionSpecs {
	NSData *const testData =
		[NSData dataWithContentsOfURL:
			[[NSBundle bundleForClass:[self class]]
				URLForResource:@"68000ops"
				withExtension:@"json"
				subdirectory:@"68000 Decoding"]];

	NSDictionary<NSString *, NSString *> *const decodings = [NSJSONSerialization JSONObjectWithData:testData options:0 error:nil];
	XCTAssertNotNil(decodings);

	Predecoder<Model::M68000> decoder;
	for(int instr = 0; instr < 65536; instr++) {
		NSString *const instrName = [NSString stringWithFormat:@"%04x", instr];
		NSString *const expected = decodings[instrName];
		XCTAssertNotNil(expected);

		const auto found = decoder.decode(uint16_t(instr));

		// Hatch off no-instruction as a special case,
		// at least temporarily.
		if(found.operation == Operation::Undefined) {
			XCTAssertEqualObjects(@"None", expected);
			continue;
		}
	}

}

@end