mirror of
https://github.com/TomHarte/CLK.git
synced 2024-11-05 06:05:27 +00:00
97 lines
3.7 KiB
Plaintext
97 lines
3.7 KiB
Plaintext
//
|
|
// PCMSegmentEventSourceTests.m
|
|
// Clock Signal
|
|
//
|
|
// Created by Thomas Harte on 17/12/2016.
|
|
// Copyright 2016 Thomas Harte. All rights reserved.
|
|
//
|
|
|
|
#import <XCTest/XCTest.h>
|
|
|
|
#include "PCMSegment.hpp"
|
|
|
|
@interface PCMSegmentEventSourceTests : XCTestCase
|
|
@end
|
|
|
|
@implementation PCMSegmentEventSourceTests
|
|
|
|
- (Storage::Disk::PCMSegmentEventSource)segmentSource {
|
|
std::vector<uint8_t> data = {0xff, 0x00, 0xff, 0x00};
|
|
Storage::Disk::PCMSegment alternatingFFs(Storage::Time(1, 10), data.size()*8, data);
|
|
return Storage::Disk::PCMSegmentEventSource(alternatingFFs);
|
|
}
|
|
|
|
- (void)testCentring {
|
|
Storage::Disk::PCMSegmentEventSource segmentSource = self.segmentSource;
|
|
[self assertFirstTwoEventLengthsForSource:segmentSource];
|
|
}
|
|
|
|
- (void)assertFirstTwoEventLengthsForSource:(Storage::Disk::PCMSegmentEventSource &)segmentSource {
|
|
Storage::Disk::Track::Event first_event = segmentSource.get_next_event();
|
|
Storage::Disk::Track::Event second_event = segmentSource.get_next_event();
|
|
|
|
first_event.length.simplify();
|
|
second_event.length.simplify();
|
|
XCTAssertTrue(first_event.length.length == 1 && first_event.length.clock_rate == 20, @"First event should occur half a bit's length in");
|
|
XCTAssertTrue(second_event.length.length == 1 && second_event.length.clock_rate == 10, @"Second event should occur a whole bit's length after the first");
|
|
}
|
|
|
|
- (void)testLongerGap {
|
|
Storage::Disk::PCMSegmentEventSource segmentSource = self.segmentSource;
|
|
|
|
// skip first eight flux transitions
|
|
for(int c = 0; c < 8; c++) segmentSource.get_next_event();
|
|
|
|
Storage::Disk::Track::Event next_event = segmentSource.get_next_event();
|
|
next_event.length.simplify();
|
|
|
|
XCTAssertTrue(next_event.length.length == 9 && next_event.length.clock_rate == 10, @"Zero byte should give a nine bit length event gap");
|
|
}
|
|
|
|
- (void)testTermination {
|
|
Storage::Disk::PCMSegmentEventSource segmentSource = self.segmentSource;
|
|
Storage::Time total_time;
|
|
for(int c = 0; c < 16; c++) total_time += segmentSource.get_next_event().length;
|
|
|
|
Storage::Disk::Track::Event final_event = segmentSource.get_next_event();
|
|
total_time += final_event.length;
|
|
total_time.simplify();
|
|
|
|
XCTAssertTrue(final_event.type == Storage::Disk::Track::Event::IndexHole, @"Segment should end with an index hole");
|
|
XCTAssertTrue(total_time.length == 16 && total_time.clock_rate == 5, @"Should have taken 32 bit lengths to finish the segment");
|
|
}
|
|
|
|
- (void)testReset {
|
|
Storage::Disk::PCMSegmentEventSource segmentSource = self.segmentSource;
|
|
for(int c = 0; c < 8; c++) segmentSource.get_next_event();
|
|
segmentSource.reset();
|
|
[self assertFirstTwoEventLengthsForSource:segmentSource];
|
|
}
|
|
|
|
- (void)testSeekToSecondBit {
|
|
Storage::Disk::PCMSegmentEventSource segmentSource = self.segmentSource;
|
|
|
|
const float found_time = segmentSource.seek_to(1.0f / 10.0f);
|
|
XCTAssertTrue(fabsf(found_time - 1.0f / 20.0f) < 0.01f, @"A request to seek to 1/10th should have seeked to 1/20th");
|
|
|
|
Storage::Disk::Track::Event next_event = segmentSource.get_next_event();
|
|
next_event.length.simplify();
|
|
|
|
XCTAssertTrue(next_event.length.length == 1 && next_event.length.clock_rate == 10, @"Next event should be 1/10th later");
|
|
}
|
|
|
|
- (void)testSeekBeyondFinalBit {
|
|
Storage::Disk::PCMSegmentEventSource segmentSource = self.segmentSource;
|
|
const float found_time = segmentSource.seek_to(2.4f);
|
|
|
|
XCTAssertTrue(fabsf(found_time - 47.0f / 20.0f) < 0.01f, @"A request to seek to 24/10ths should have seeked to 47/20ths");
|
|
|
|
Storage::Disk::Track::Event next_event = segmentSource.get_next_event();
|
|
next_event.length.simplify();
|
|
|
|
XCTAssertTrue(next_event.length.length == 17 && next_event.length.clock_rate == 20, @"Next event should be 17/20ths later");
|
|
XCTAssertTrue(next_event.type == Storage::Disk::Track::Event::IndexHole, @"End should have been reached");
|
|
}
|
|
|
|
@end
|