test weirdness

 I suspect it's related to linking…  
 So, a while back Orlando had fixed some things in Foundation (which still haven't been merged yet).  
 The symptom is that you'll get an error from unwrapping a nil.  
 When I test OSULogger (b, in the example above) without the patched Foundation I get the error.  
 Once I patched it, the tests pass.  Then, with the same libraries and everything, 
 if I pull in OSUOpenCL (a) which depends on OSULogger, the tests in logger fail in the 
 same way as the unpatched Foundation
 
 wdillon@beast:~/OSULogger$ swift test
Compiling Swift Module 'OSULoggertest' (2 sources)
Linking test-Package.xctest
Test Case 'OSULogger_TestComplete.testSeverityComparable' started.
Test Case 'OSULogger_TestComplete.testSeverityComparable' passed (0.0 seconds).
Test Case 'OSULogger_TestComplete.testLoggerEquivalence' started.
Test Case 'OSULogger_TestComplete.testLoggerEquivalence' passed (0.0 seconds).
Test Case 'OSULogger_TestComplete.testSharedLogger' started.
Test Case 'OSULogger_TestComplete.testSharedLogger' passed (0.0 seconds).
Test Case 'OSULogger_TestComplete.testPerformanceXMLLoad' started.
Test Case 'OSULogger_TestComplete.testPerformanceXMLLoad' passed (0.005 seconds).
Test Case 'OSULogger_TestComplete.testPerformanceJSONLoad' started.
Test Case 'OSULogger_TestComplete.testPerformanceJSONLoad' passed (0.004 seconds).
Test Case 'OSULogger_TestComplete.testPerformanceXMLWrite' started.
Test Case 'OSULogger_TestComplete.testPerformanceXMLWrite' passed (0.003 seconds).
Test Case 'OSULogger_TestComplete.testPerformanceJSONWrite' started.
Test Case 'OSULogger_TestComplete.testPerformanceJSONWrite' passed (0.001 seconds).
Test Case 'OSULogger_TestComplete.testStringFromXML' started.
Test Case 'OSULogger_TestComplete.testStringFromXML' passed (0.001 seconds).
Test Case 'OSULogger_TestComplete.testXMLReadAndWrite' started.
Test Case 'OSULogger_TestComplete.testXMLReadAndWrite' passed (0.008 seconds).
Executed 9 tests, with 0 failures (0 unexpected) in 0.021 (0.149) seconds
Test Case 'OSULogger_TestSimple.testSimple' started.
Test Case 'OSULogger_TestSimple.testSimple' passed (0.0 seconds).
Executed 1 test, with 0 failures (0 unexpected) in 0.0 (0.0) seconds
Total executed 10 tests, with 0 failures (0 unexpected) in 0.021 (0.149) seconds

wdillon@beast:~/OSUOpenCL$ swift test
Linking test-Package.xctest
Test Case 'OSULogger_TestComplete.testSeverityComparable' started.
fatal error: unexpectedly found nil while unwrapping an Optional value
Current stack trace:
/usr/lib/swift/linux/libswiftCore.so(swift_reportError+0x8b) [0x7f03e4e877eb]
/usr/lib/swift/linux/libswiftCore.so(_swift_stdlib_reportFatalError+0x3d) [0x7f03e4e9856d]
/usr/lib/swift/linux/libswiftCore.so(+0x23b5df) [0x7f03e4de05df]
/usr/lib/swift/linux/libswiftCore.so(function signature specialization <Arg[0] = Exploded, Arg[1] = Exploded, Arg[2] = Dead, Arg[3] = Dead> of Swift._fatalErrorMessage (Swift.StaticString, Swift.StaticString, Swift.StaticString, Swift.UInt, flags : Swift.UInt32) -> ()+0x34) [0x7f03e4de06e4]
/home/wdillon/OSUOpenCL/.build/debug/test-Package() [0x40d8da]
/home/wdillon/OSUOpenCL/.build/debug/test-Package() [0x40d125]
/home/wdillon/OSUOpenCL/.build/debug/test-Package() [0x413a32]
/usr/lib/swift/linux/libXCTest.so(+0x151e8) [0x7f03e413e1e8]
/usr/lib/swift/linux/libXCTest.so(+0x15bdf) [0x7f03e413ebdf]
/usr/lib/swift/linux/libXCTest.so(+0x14b9a) [0x7f03e413db9a]
/usr/lib/swift/linux/libXCTest.so((extension in XCTest):XCTest.XCTestCase.invokeTest () -> ()+0x176) [0x7f03e413d666]
/usr/lib/swift/linux/libXCTest.so(+0x17ab0) [0x7f03e4140ab0]
/usr/lib/swift/linux/libXCTest.so(+0x14b9a) [0x7f03e413db9a]
/usr/lib/swift/linux/libXCTest.so(XCTest.XCTMain (Swift.Array<XCTest.XCTestCase>) -> ()+0x5a) [0x7f03e41402aa]
/home/wdillon/OSUOpenCL/.build/debug/test-Package() [0x40a542]
/lib/x86_64-linux-gnu/libc.so.6(__libc_start_main+0xf5) [0x7f03e2f40ec5]
/home/wdillon/OSUOpenCL/.build/debug/test-Package() [0x40a3b9]

Test module:

From OSUOpenCL

<OSULogger.test.module>:
  tool: swift-compiler
  executable: /usr/bin/swiftc
  module-name: OSULoggertest
  module-output-path: /home/wdillon/OSUOpenCL/.build/debug/OSULoggertest.swiftmodule
  inputs: [<PMJSON.module>, <OSULogger.module>]
  outputs: [<OSULogger.test.module>, /home/wdillon/OSUOpenCL/.build/debug/OSULoggertest.build/TestSimple.swift.o, 
    /home/wdillon/OSUOpenCL/.build/debug/OSULoggertest.build/TestComplete.swift.o]
  import-paths: /home/wdillon/OSUOpenCL/.build/debug
  temps-path: /home/wdillon/OSUOpenCL/.build/debug/OSULoggertest.build
  objects: [/home/wdillon/OSUOpenCL/.build/debug/OSULoggertest.build/TestSimple.swift.o, 
    /home/wdillon/OSUOpenCL/.build/debug/OSULoggertest.build/TestComplete.swift.o]
  other-args: ["-j8", "-Onone", "-g", "-D", SWIFT_PACKAGE, "-enable-testing"]
  sources: ["/home/wdillon/OSUOpenCL/Packages/OSULogger-1.0.0/Tests/OSULogger/TestSimple.swift", 
    "/home/wdillon/OSUOpenCL/Packages/OSULogger-1.0.0/Tests/OSULogger/TestComplete.swift"]
  is-library: true

From OSULogger

<OSULogger.test.module>:
  tool: swift-compiler
  executable: /usr/bin/swiftc
  module-name: OSULoggertest
  module-output-path: /home/wdillon/OSULogger/.build/debug/OSULoggertest.swiftmodule
  inputs: [<PMJSON.module>, <OSULogger.module>]
  outputs: [<OSULogger.test.module>, /home/wdillon/OSULogger/.build/debug/OSULoggertest.build/TestSimple.swift.o, /home/wdillon/OSULogger/.build/debug/OSULoggertest.build/TestComplete.swift.o]
  import-paths: /home/wdillon/OSULogger/.build/debug
  temps-path: /home/wdillon/OSULogger/.build/debug/OSULoggertest.build
  objects: [/home/wdillon/OSULogger/.build/debug/OSULoggertest.build/TestSimple.swift.o, /home/wdillon/OSULogger/.build/debug/OSULoggertest.build/TestComplete.swift.o]
  other-args: ["-j8", "-Onone", "-g", "-D", SWIFT_PACKAGE, "-enable-testing"]
  sources: [/home/wdillon/OSULogger/Tests/OSULogger/TestSimple.swift, /home/wdillon/OSULogger/Tests/OSULogger/TestComplete.swift]
  is-library: true

As far as I can see, these are identical.

Test Package

From OSUOpenCL

<Package.test>:
  tool: shell
  description: Linking test-Package.xctest
  inputs: [<OSULogger.test.module>, <PMJSON.module>, <OSULogger.module>]
  outputs: [<Package.test>, "/home/wdillon/OSUOpenCL/.build/debug/test-Package"]
  args: [/usr/bin/swiftc, "/home/wdillon/OSUOpenCL/Packages/OSULogger-1.0.0/Tests/LinuxMain.swift", "-emit-executable", "-I", /home/wdillon/OSUOpenCL/.build/debug, "-o", "/home/wdillon/OSUOpenCL/.build/debug/test-Package", /home/wdillon/OSUOpenCL/.build/debug/OSULoggertest.build/TestSimple.swift.o, /home/wdillon/OSUOpenCL/.build/debug/OSULoggertest.build/TestComplete.swift.o, /home/wdillon/OSUOpenCL/.build/debug/PMJSON.build/Decoder.swift.o, /home/wdillon/OSUOpenCL/.build/debug/PMJSON.build/ObjectiveC.swift.o, /home/wdillon/OSUOpenCL/.build/debug/PMJSON.build/JSON.swift.o, /home/wdillon/OSUOpenCL/.build/debug/PMJSON.build/JSONObject.swift.o, /home/wdillon/OSUOpenCL/.build/debug/PMJSON.build/DecimalNumber.swift.o, /home/wdillon/OSUOpenCL/.build/debug/PMJSON.build/Accessors.swift.o, /home/wdillon/OSUOpenCL/.build/debug/PMJSON.build/Parser.swift.o, /home/wdillon/OSUOpenCL/.build/debug/PMJSON.build/JSONError.swift.o, /home/wdillon/OSUOpenCL/.build/debug/PMJSON.build/Encoder.swift.o, /home/wdillon/OSUOpenCL/.build/debug/OSULogger.build/StringExtension.swift.o, /home/wdillon/OSUOpenCL/.build/debug/OSULogger.build/CBridge.swift.o, /home/wdillon/OSUOpenCL/.build/debug/OSULogger.build/OSULogger+XML.swift.o, /home/wdillon/OSUOpenCL/.build/debug/OSULogger.build/OSULogger+JSON.swift.o, /home/wdillon/OSUOpenCL/.build/debug/OSULogger.build/OSULoggerObserver.swift.o, /home/wdillon/OSUOpenCL/.build/debug/OSULogger.build/OSUConsoleLoggerObserver.swift.o, /home/wdillon/OSUOpenCL/.build/debug/OSULogger.build/OSULog.swift.o, /home/wdillon/OSUOpenCL/.build/debug/OSULogger.build/OSULogger.swift.o]

From OSULogger

<Package.test>:
  tool: shell
  description: Linking test-Package.xctest
  inputs: [<OSULogger.test.module>, <PMJSON.module>, <OSULogger.module>]
  outputs: [<Package.test>, "/home/wdillon/OSULogger/.build/debug/test-Package"]
  args: [/usr/bin/swiftc, /home/wdillon/OSULogger/Tests/LinuxMain.swift, "-emit-executable", "-I", /home/wdillon/OSULogger/.build/debug, "-o", "/home/wdillon/OSULogger/.build/debug/test-Package", /home/wdillon/OSULogger/.build/debug/OSULoggertest.build/TestSimple.swift.o, /home/wdillon/OSULogger/.build/debug/OSULoggertest.build/TestComplete.swift.o, /home/wdillon/OSULogger/.build/debug/PMJSON.build/Decoder.swift.o, /home/wdillon/OSULogger/.build/debug/PMJSON.build/ObjectiveC.swift.o, /home/wdillon/OSULogger/.build/debug/PMJSON.build/JSON.swift.o, /home/wdillon/OSULogger/.build/debug/PMJSON.build/JSONObject.swift.o, /home/wdillon/OSULogger/.build/debug/PMJSON.build/DecimalNumber.swift.o, /home/wdillon/OSULogger/.build/debug/PMJSON.build/Accessors.swift.o, /home/wdillon/OSULogger/.build/debug/PMJSON.build/Parser.swift.o, /home/wdillon/OSULogger/.build/debug/PMJSON.build/JSONError.swift.o, /home/wdillon/OSULogger/.build/debug/PMJSON.build/Encoder.swift.o, /home/wdillon/OSULogger/.build/debug/OSULogger.build/StringExtension.swift.o, /home/wdillon/OSULogger/.build/debug/OSULogger.build/CBridge.swift.o, /home/wdillon/OSULogger/.build/debug/OSULogger.build/OSULogger+XML.swift.o, /home/wdillon/OSULogger/.build/debug/OSULogger.build/OSULogger+JSON.swift.o, /home/wdillon/OSULogger/.build/debug/OSULogger.build/OSULoggerObserver.swift.o, /home/wdillon/OSULogger/.build/debug/OSULogger.build/OSUConsoleLoggerObserver.swift.o, /home/wdillon/OSULogger/.build/debug/OSULogger.build/OSULog.swift.o, /home/wdillon/OSULogger/.build/debug/OSULogger.build/OSULogger.swift.o]

These are identical, other than the paths.

I tried making a shell script that compiles the test executable and I can change the objects that it pulls from easily:

#!/bin/bash

#LIBRARY_PREFIX=/home/wdillon/OSULogger
LIBRARY_PREFIX=/home/wdillon/OSUOpenCL
OBJECT_PREFIX=${LIBRARY_PREFIX}/.build/debug

rm test-package

/usr/bin/swiftc /home/wdillon/OSULogger/Tests/LinuxMain.swift -emit-executable -I ${LIBRARY_PREFIX}/.build/debug -o test-package \
${OBJECT_PREFIX}/OSULoggertest.build/TestSimple.swift.o \
${OBJECT_PREFIX}/OSULoggertest.build/TestComplete.swift.o \
${OBJECT_PREFIX}/PMJSON.build/Decoder.swift.o \
${OBJECT_PREFIX}/PMJSON.build/ObjectiveC.swift.o \
${OBJECT_PREFIX}/PMJSON.build/JSON.swift.o \
${OBJECT_PREFIX}/PMJSON.build/JSONObject.swift.o \
${OBJECT_PREFIX}/PMJSON.build/DecimalNumber.swift.o \
${OBJECT_PREFIX}/PMJSON.build/Accessors.swift.o \
${OBJECT_PREFIX}/PMJSON.build/Parser.swift.o \
${OBJECT_PREFIX}/PMJSON.build/JSONError.swift.o \
${OBJECT_PREFIX}/PMJSON.build/Encoder.swift.o \
${OBJECT_PREFIX}/OSULogger.build/StringExtension.swift.o \
${OBJECT_PREFIX}/OSULogger.build/CBridge.swift.o \
${OBJECT_PREFIX}/OSULogger.build/OSULogger+XML.swift.o \
${OBJECT_PREFIX}/OSULogger.build/OSULogger+JSON.swift.o \
${OBJECT_PREFIX}/OSULogger.build/OSULoggerObserver.swift.o \
${OBJECT_PREFIX}/OSULogger.build/OSUConsoleLoggerObserver.swift.o \
${OBJECT_PREFIX}/OSULogger.build/OSULog.swift.o \
${OBJECT_PREFIX}/OSULogger.build/OSULogger.swift.o

./test-package

It doesn't matter where it pulls the objects from, the same problem occurs in either case.

It makes a difference how the test program is called:

wdillon@beast:~$ ./OSULogger/.build/debug/test-Package
Test Case 'OSULogger_TestComplete.testSeverityComparable' started.
fatal error: unexpectedly found nil while unwrapping an Optional value
Current stack trace:
/usr/lib/swift/linux/libswiftCore.so(swift_reportError+0x8b) [0x7fdcc9c7e7eb]
/usr/lib/swift/linux/libswiftCore.so(_swift_stdlib_reportFatalError+0x3d) [0x7fdcc9c8f56d]
/usr/lib/swift/linux/libswiftCore.so(+0x23b5df) [0x7fdcc9bd75df]
/usr/lib/swift/linux/libswiftCore.so(function signature specialization <Arg[0] = Exploded, Arg[1] = Exploded, Arg[2] = Dead, Arg[3] = Dead> of Swift._fatalErrorMessage (Swift.StaticString, Swift.StaticString, Swift.StaticString, Swift.UInt, flags : Swift.UInt32) -> ()+0x34) [0x7fdcc9bd76e4]
./OSULogger/.build/debug/test-Package() [0x40d8da]
./OSULogger/.build/debug/test-Package() [0x40d125]
./OSULogger/.build/debug/test-Package() [0x413a42]
/usr/lib/swift/linux/libXCTest.so(+0x151e8) [0x7fdcc8f351e8]
/usr/lib/swift/linux/libXCTest.so(+0x15bdf) [0x7fdcc8f35bdf]
/usr/lib/swift/linux/libXCTest.so(+0x14b9a) [0x7fdcc8f34b9a]
/usr/lib/swift/linux/libXCTest.so((extension in XCTest):XCTest.XCTestCase.invokeTest () -> ()+0x176) [0x7fdcc8f34666]
/usr/lib/swift/linux/libXCTest.so(+0x17ab0) [0x7fdcc8f37ab0]
/usr/lib/swift/linux/libXCTest.so(+0x14b9a) [0x7fdcc8f34b9a]
/usr/lib/swift/linux/libXCTest.so(XCTest.XCTMain (Swift.Array<XCTest.XCTestCase>) -> ()+0x5a) [0x7fdcc8f372aa]
./OSULogger/.build/debug/test-Package() [0x40a542]
/lib/x86_64-linux-gnu/libc.so.6(__libc_start_main+0xf5) [0x7fdcc7d37ec5]
./OSULogger/.build/debug/test-Package() [0x40a3b9]
Illegal instruction (core dumped)
wdillon@beast:~$ cd OSULogger/
wdillon@beast:~/OSULogger$ swift test
Test Case 'OSULogger_TestComplete.testSeverityComparable' started.
Test Case 'OSULogger_TestComplete.testSeverityComparable' passed (0.0 seconds).
Test Case 'OSULogger_TestComplete.testLoggerEquivalence' started.
Test Case 'OSULogger_TestComplete.testLoggerEquivalence' passed (0.0 seconds).
Test Case 'OSULogger_TestComplete.testSharedLogger' started.
Test Case 'OSULogger_TestComplete.testSharedLogger' passed (0.0 seconds).
Test Case 'OSULogger_TestComplete.testPerformanceXMLLoad' started.
Test Case 'OSULogger_TestComplete.testPerformanceXMLLoad' passed (0.005 seconds).
Test Case 'OSULogger_TestComplete.testPerformanceJSONLoad' started.
Test Case 'OSULogger_TestComplete.testPerformanceJSONLoad' passed (0.004 seconds).
Test Case 'OSULogger_TestComplete.testPerformanceXMLWrite' started.
Test Case 'OSULogger_TestComplete.testPerformanceXMLWrite' passed (0.004 seconds).
Test Case 'OSULogger_TestComplete.testPerformanceJSONWrite' started.
Test Case 'OSULogger_TestComplete.testPerformanceJSONWrite' passed (0.001 seconds).
Test Case 'OSULogger_TestComplete.testStringFromXML' started.
Test Case 'OSULogger_TestComplete.testStringFromXML' passed (0.001 seconds).
Test Case 'OSULogger_TestComplete.testXMLReadAndWrite' started.
Test Case 'OSULogger_TestComplete.testXMLReadAndWrite' passed (0.012 seconds).
Executed 9 tests, with 0 failures (0 unexpected) in 0.027 (0.179) seconds
Test Case 'OSULogger_TestSimple.testSimple' started.
Test Case 'OSULogger_TestSimple.testSimple' passed (0.0 seconds).
Executed 1 test, with 0 failures (0 unexpected) in 0.0 (0.0) seconds
Total executed 10 tests, with 0 failures (0 unexpected) in 0.027 (0.18) seconds

It's failing to find the exemplar files