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Realised I was actually testing PCMSegmentEventSource, not PCMSegment; implemented a spread of tests; hence fixed PCMSegmentEventSource.

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This commit is contained in:
Thomas Harte 2016-12-17 21:47:13 -05:00
parent 254cc41fd6
commit 3116a2cf4c
3 changed files with 89 additions and 4 deletions
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6
OSBindings/Mac/Clock Signal.xcodeproj/project.pbxproj
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@ -12,6 +12,7 @@
4B0CCC451C62D0B3001CAC5F /* CRT.cpp in Sources */ = {isa = PBXBuildFile; fileRef = 4B0CCC421C62D0B3001CAC5F /* CRT.cpp */; };
4B121F951E05E66800BFDA12 /* PCMPatchedTrackTests.mm in Sources */ = {isa = PBXBuildFile; fileRef = 4B121F941E05E66800BFDA12 /* PCMPatchedTrackTests.mm */; };
4B121F981E060CF000BFDA12 /* PCMSegment.cpp in Sources */ = {isa = PBXBuildFile; fileRef = 4B121F961E060CF000BFDA12 /* PCMSegment.cpp */; };
4B121F9B1E06293F00BFDA12 /* PCMSegmentEventSourceTests.mm in Sources */ = {isa = PBXBuildFile; fileRef = 4B121F9A1E06293F00BFDA12 /* PCMSegmentEventSourceTests.mm */; };
4B14145B1B58879D00E04248 /* CPU6502.cpp in Sources */ = {isa = PBXBuildFile; fileRef = 4B1414571B58879D00E04248 /* CPU6502.cpp */; };
4B14145D1B5887A600E04248 /* CPU6502.cpp in Sources */ = {isa = PBXBuildFile; fileRef = 4B1414571B58879D00E04248 /* CPU6502.cpp */; };
4B14145E1B5887AA00E04248 /* CPU6502AllRAM.cpp in Sources */ = {isa = PBXBuildFile; fileRef = 4B1414591B58879D00E04248 /* CPU6502AllRAM.cpp */; };
@ -430,6 +431,7 @@
4B121F941E05E66800BFDA12 /* PCMPatchedTrackTests.mm */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.cpp.objcpp; path = PCMPatchedTrackTests.mm; sourceTree = "<group>"; };
4B121F961E060CF000BFDA12 /* PCMSegment.cpp */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.cpp.cpp; path = PCMSegment.cpp; sourceTree = "<group>"; };
4B121F971E060CF000BFDA12 /* PCMSegment.hpp */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.cpp.h; path = PCMSegment.hpp; sourceTree = "<group>"; };
4B121F9A1E06293F00BFDA12 /* PCMSegmentEventSourceTests.mm */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.cpp.objcpp; path = PCMSegmentEventSourceTests.mm; sourceTree = "<group>"; };
4B1414501B58848C00E04248 /* ClockSignal-Bridging-Header.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; path = "ClockSignal-Bridging-Header.h"; sourceTree = "<group>"; };
4B1414571B58879D00E04248 /* CPU6502.cpp */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.cpp.cpp; path = CPU6502.cpp; sourceTree = "<group>"; };
4B1414581B58879D00E04248 /* CPU6502.hpp */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.cpp.h; path = CPU6502.hpp; sourceTree = "<group>"; };
@ -1684,8 +1686,9 @@
4BB73EB51B587A5100552FC2 /* Clock SignalTests */ = {
isa = PBXGroup;
children = (
4B121F941E05E66800BFDA12 /* PCMPatchedTrackTests.mm */,
4B5073091DDFCFDF00C48FBD /* ArrayBuilderTests.mm */,
4B121F9A1E06293F00BFDA12 /* PCMSegmentEventSourceTests.mm */,
4B121F941E05E66800BFDA12 /* PCMPatchedTrackTests.mm */,
4BB73EB81B587A5100552FC2 /* Info.plist */,
4BC9E1ED1D23449A003FCEE4 /* 6502InterruptTests.swift */,
4B92EAC91B7C112B00246143 /* 6502TimingTests.swift */,
@ -2452,6 +2455,7 @@
4B92EACA1B7C112B00246143 /* 6502TimingTests.swift in Sources */,
4BB73EB71B587A5100552FC2 /* AllSuiteATests.swift in Sources */,
4B121F981E060CF000BFDA12 /* PCMSegment.cpp in Sources */,
4B121F9B1E06293F00BFDA12 /* PCMSegmentEventSourceTests.mm in Sources */,
4BEF6AAC1D35D1C400E73575 /* DPLLTests.swift in Sources */,
4B3BA0CF1D318B44005DD7A7 /* MOS6522Bridge.mm in Sources */,
4BC751B21D157E61006C31D9 /* 6522Tests.swift in Sources */,

80
OSBindings/Mac/Clock SignalTests/PCMSegmentEventSourceTests.mm Normal file
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@ -0,0 +1,80 @@
//
// 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
{
Storage::Disk::PCMSegment alternatingFFs;
alternatingFFs.data = {0xff, 0x00, 0xff, 0x00};
alternatingFFs.length_of_a_bit.length = 1;
alternatingFFs.length_of_a_bit.clock_rate = 10;
alternatingFFs.number_of_bits = 32;
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];
}
@end

7
Storage/Disk/PCMSegment.cpp
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@ -25,13 +25,13 @@ PCMSegmentEventSource::PCMSegmentEventSource(const PCMSegment &segment) :
void PCMSegmentEventSource::reset()
{
bit_pointer_ = 0;
next_event_.length.length = -(segment_.length_of_a_bit.length >> 1);
next_event_.type = Track::Event::FluxTransition;
}
Storage::Disk::Track::Event PCMSegmentEventSource::get_next_event()
{
Storage::Disk::Track::Event next_event;
size_t initial_bit_pointer = bit_pointer_;
next_event_.length.length = bit_pointer_ ? 0 : -(segment_.length_of_a_bit.length >> 1);
const uint8_t *segment_data = segment_.data.data();
while(bit_pointer_ < segment_.number_of_bits)
@ -43,6 +43,7 @@ Storage::Disk::Track::Event PCMSegmentEventSource::get_next_event()
if(bit) return next_event_;
}
if(initial_bit_pointer < segment_.number_of_bits) next_event_.length.length += (segment_.length_of_a_bit.length >> 1);
next_event_.type = Track::Event::IndexHole;
return next_event;
return next_event_;
}