With patches for bug 668349 and 668351, xpcshell tests can be run on an Android device, and the majority of tests pass. However, uriloader/exthandler/tests/unit/test_handlerService.js consistently fails when run on Android.

geoff@geoff-MacBookPro:~/src/mozilla-central/objdir-droid$ make SOLO_FILE=test_handlerService.js -C uriloader/exthandler/tests check-one-remote make: Entering directory `/home/geoff/src/mozilla-central/objdir-droid/uriloader/exthandler/tests' /usr/bin/python2.6 -u ../../../../config/pythonpath.py \ -I../../../../build \ -I../../../../build/mobile \ ../../../../testing/xpcshell/remotexpcshelltests.py \ --symbols-path=../../../dist/crashreporter-symbols \ --build-info-json=../../../mozinfo.json \ --test-path=test_handlerService.js \ --profile-name=fennec \ --verbose \ \ --dm_trans=adb \ --deviceIP= \ --objdir=../../.. \ --apk=../../../dist/fennec-8.0a1.en-US.eabi-arm.apk \ --noSetup \ ../../../_tests/xpcshell/uriloader/exthandler/tests/unit ../../../_tests/xpcshell/uriloader/exthandler/tests/unit_ipc package set: org.mozilla.fennec_unofficial chmod /data/local/tests/xpcshell/p TEST-INFO | profile dir is /data/local/tests/xpcshell/p TEST-INFO | /home/geoff/src/mozilla-central/objdir-droid/_tests/xpcshell/uriloader/exthandler/tests/unit/test_handlerService.js | running test ... cd /data/local/tests/xpcshell/uriloader/exthandler/tests/unit; LD_LIBRARY_PATH=/data/local/tests/xpcshell/b; export CACHE_PATH=/data/local/tests/xpcshell/b; export GRE_HOME=/data/data/org.mozilla.fennec_unofficial; export XPCSHELL_TEST_PROFILE_DIR=/data/local/tests/xpcshell/p; /data/local/tests/xpcshell/b/xpcshell -r /data/local/tests/xpcshell/c/httpd.manifest --greomni /data/local/tests/xpcshell/b/fennec-8.0a1.en-US.eabi-arm.apk -j -s -e 'const _HTTPD_JS_PATH = "/data/local/tests/xpcshell/c/httpd.js";' -e 'const _HEAD_JS_PATH = "/data/local/tests/xpcshell/head.js";' -f /data/local/tests/xpcshell/head.js -e 'const _SERVER_ADDR = "localhost"' -e 'const _HEAD_FILES = ["head_handlerService.js"];' -e 'const _TAIL_FILES = ["tail_handlerService.js"];' -e 'const _TEST_FILE = ["test_handlerService.js"];' -e '_execute_test(); quit(0);' TEST-KNOWN-FAIL | /home/geoff/src/mozilla-central/objdir-droid/_tests/xpcshell/uriloader/exthandler/tests/unit/test_handlerService.js | test passed >>>>>>> WARNING: XPCOM objects created/destroyed from static ctor/dtor: file /home/geoff/src/mozilla-central/xpcom/base/nsTraceRefcntImpl.cpp, line 172 WARNING: No default pref files found.: file /home/geoff/src/mozilla-central/modules/libpref/src/Preferences.cpp, line 923 WARNING: GetIsLinkUp is not supported without a bridge connection: file /home/geoff/src/mozilla-central/netwerk/system/android/nsAndroidNetworkLinkService.cpp, line 61 *** HandlerServiceTest: getFile: requesting UMimTyp *** HandlerServiceTest: getFile: requesting CurProcD *** HandlerServiceTest: the following NS_ERROR_FAILURE exception in nsIDirectoryServiceProvider::getFile is expected, as we don't provide the 'CurProcD' file TEST-INFO | (xpcshell/head.js) | test 1 pending *** HandlerServiceTest: getFile: requesting ProfLDS *** HandlerServiceTest: the following NS_ERROR_FAILURE exception in nsIDirectoryServiceProvider::getFile is expected, as we don't provide the 'ProfLDS' file JS Component Loader: ERROR (null):0 uncaught exception: 2147500037 *** HandlerServiceTest: getFile: requesting TmpD *** HandlerServiceTest: the following NS_ERROR_FAILURE exception in nsIDirectoryServiceProvider::getFile is expected, as we don't provide the 'TmpD' file *** HandlerServiceTest: getFile: requesting ProfLDS *** HandlerServiceTest: the following NS_ERROR_FAILURE exception in nsIDirectoryServiceProvider::getFile is expected, as we don't provide the 'ProfLDS' file JS Component Loader: ERROR (null):0 uncaught exception: 2147500037 ###!!! ASSERTION: no extension: '!aExtension.IsEmpty()', file /home/geoff/src/mozilla-central/uriloader/exthandler/android/nsMIMEInfoAndroid.cpp, line 341 TEST-PASS | test_handlerService.js | [run_test : 118] true == true TEST-PASS | test_handlerService.js | [run_test : 120] nonexistent/type == nonexistent/type TEST-PASS | test_handlerService.js | [run_test : 123] nonexistent/type == nonexistent/type TEST-UNEXPECTED-FAIL | test_handlerService.js | 2 == 0 - See following stack: JS frame :: /data/local/tests/xpcshell/head.js :: do_throw :: line 445 JS frame :: /data/local/tests/xpcshell/head.js :: _do_check_eq :: line 539 JS frame :: /data/local/tests/xpcshell/head.js :: do_check_eq :: line 560 JS frame :: test_handlerService.js :: run_test :: line 126 JS frame :: /data/local/tests/xpcshell/head.js :: _execute_test :: line 326 JS frame :: -e :: <TOP_LEVEL> :: line 1 TEST-INFO | (xpcshell/head.js) | exiting test WARNING: nsExceptionService ignoring thread destruction after shutdown: file /home/geoff/src/mozilla-central/xpcom/base/nsExceptionService.cpp, line 197 WARNING: unable to Flush() diry datasource during XPCOM shutdown: file /home/geoff/src/mozilla-central/rdf/base/src/nsRDFXMLDataSource.cpp, line 776 WARNING: OOPDeinit() without successful OOPInit(): file /home/geoff/src/mozilla-central/toolkit/crashreporter/nsExceptionHandler.cpp, line 1830 nsStringStats => mAllocCount: 1604 => mReallocCount: 22 => mFreeCount: 1604 => mShareCount: 7080 => mAdoptCount: 73 => mAdoptFreeCount: 73 WARNING: XPCOM objects created/destroyed from static ctor/dtor: file /home/geoff/src/mozilla-central/xpcom/base/nsTraceRefcntImpl.cpp, line 172 <<<<<<< INFO | Result summary: INFO | Passed: 0 INFO | Failed: 0 INFO | Todo: 1 make: Leaving directory `/home/geoff/src/mozilla-central/objdir-droid/uriloader/exthandler/tests'

The failing test calls: var handlerInfo = mimeSvc.getFromTypeAndExtension("nonexistent/type", null); and fails because handlerInfo.preferredAction != Ci.nsIHandlerInfo.saveToDisk. I suspect that the assertion about a non-empty extension is inappropriate. From nsIMIMEService: "One of aMIMEType and aFileExt can be an empty string. At least one of aMIMEType and aFileExt must be nonempty."