Tests crash when run without a network connection

[lispwitch]

If the unit tests from test/libdigidoc_boost.cpp are run without a network connection, an attempted network connection to fails during a call to the TS constructor from within the DocSuite/signature<digidoc__ASiCE> test, leading to error messages and ultimately a segfault. (I found this while packaging qdigidoc4 for GNU Guix, where the build environment is restricted from network access and tests are run during the build if possible.)

The connection attempt occurs in the execution of BOOST_CHECK_NO_THROW(d->sign(&signer1)) on libdigidoc_boost.cpp:297, during a call to the TS constructor which tries to connect to http://demo.sk.ee/tsa/, and the segfault happens on line 344, when d->signatures().back() is called with signatures().size() == 0.

The network-dependent tests are DocSuite/files<digidoc__ASiCE>, DocSuite/signature<digidoc__ASiCE>, and DocSuite/signatureParameters<digidoc__ASiCE> (for the Guix package I'm skipping these with BOOST_TEST_RUN_FILTERS so that most of the tests can still be run).

I've attached a log of a test run and a gdb session, including backtraces for calls to connect and thrown exceptions. (Excluding throws from "exception raised as expected" checks, and a couple early connection attempts from getpwuid_r. The first two catchpoint hits are probably unrelated, too.)

Partial backtrace from the connect breakpoint:

#11 0x00007ffff7f76a24 in digidoc::Connect::Connect (this=this@entry=0x7fffffffcda0, _url=..., _method=..., _timeout=_timeout@entry=0, certs=..., userAgentData=...)
    at /tmp/guix-build-libdigidocpp-4.1.0.drv-0/source/src/crypto/Connect.cpp:119
#12 0x00007ffff7f6d588 in digidoc::TS::TS (this=this@entry=0x7fffffffcf90, digest=..., userAgent=...)
    at /tmp/guix-build-libdigidocpp-4.1.0.drv-0/source/src/crypto/TS.cpp:90
#13 0x00007ffff7f5d7ac in digidoc::SignatureXAdES_T::extendSignatureProfile (this=this@entry=0x51d340, signer=signer@entry=0x7fffffffd300)
    at /tmp/guix-build-libdigidocpp-4.1.0.drv-0/source/src/SignatureXAdES_T.cpp:76
#14 0x00007ffff7f604ac in digidoc::SignatureXAdES_LT::extendSignatureProfile (this=this@entry=0x51d340, signer=signer@entry=0x7fffffffd300)
    at /tmp/guix-build-libdigidocpp-4.1.0.drv-0/source/src/SignatureXAdES_LT.cpp:208
#15 0x00007ffff7f63a7c in digidoc::SignatureXAdES_LTA::extendSignatureProfile (this=this@entry=0x51d340, signer=signer@entry=0x7fffffffd300)
    at /tmp/guix-build-libdigidocpp-4.1.0.drv-0/source/src/SignatureXAdES_LTA.cpp:106
#16 0x00007ffff7f190a2 in digidoc::ASiC_E::sign (this=0x58f110, signer=0x7fffffffd300) at /tmp/guix-build-libdigidocpp-4.1.0.drv-0/source/src/ASiC_E.cpp:267
#17 0x000000000047c128 in DocSuite::signature<digidoc::ASiCE>::test_method (this=<synthetic pointer>)
    at /tmp/guix-build-libdigidocpp-4.1.0.drv-0/source/test/libdigidocpp_boost.cpp:297

[metsma]

This is known issue. The network is required currently to run unittests.

[apteryks]

Ideal resolution for me would be to detect whether network is available, else skip the tests which require it.

[metsma]

I majority of test require network.
There is built in OCSP server in OpenSSL that can be used.
Need to figure out how to implement TimeStamp server with OpenSSL.

[apteryks]

Only a test called runtest appears to fail; if I skip just this one, I get 24 tests passing:

starting phase `check'
Test project /tmp/guix-build-libdigidocpp-4.2.0.drv-0/build
      Start  1: TSLTest_CA-non-qa
      Start  2: TSLTest_no_QCStatement
      Start  3: TSLTest_no_QCSD
      Start  4: TSLTest_CA-invalid-type
      Start  5: TSLTest_CA-withdrawn
      Start  6: TSLTest_CA-granted-later
      Start  7: TSLTest_CA-withdrawn-granted-later
      Start  8: TSLTest_CA-noqscd-granted-later
      Start  9: TSLTest_OCSP-invalid-type
      Start 10: TSLTest_OCSP-withdrawn
      Start 11: TSLTest_OCSP-granted-later
      Start 12: TSLTest_OCSP-withdrawn-granted-later
      Start 13: TSLTest_OCSP-noqscd-granted-later
      Start 14: TSLTest_TSA-invalid-type
      Start 15: TSLTest_TSA-withdrawn
      Start 16: TSLTest_TSA-granted-later
      Start 17: TSLTest_TSA-withdrawn-granted-later
      Start 18: TSLTest_TSA-noqscd-granted-later
      Start 19: TSLTest_CA-withdrawn-granted-before
      Start 20: TSLTest_CA-noqscd-granted-before
      Start 21: TSLTest_OCSP-withdrawn-granted-before
      Start 22: TSLTest_OCSP-noqscd-granted-before
      Start 23: TSLTest_TSA-withdrawn-granted-before
      Start 24: TSLTest_TSA-noqscd-granted-before
 1/24 Test  #2: TSLTest_no_QCStatement ..................   Passed    0.01 sec
 2/24 Test  #3: TSLTest_no_QCSD .........................   Passed    0.01 sec
 3/24 Test  #1: TSLTest_CA-non-qa .......................   Passed    0.01 sec
 4/24 Test  #4: TSLTest_CA-invalid-type .................   Passed    0.01 sec
 5/24 Test  #5: TSLTest_CA-withdrawn ....................   Passed    0.01 sec
 6/24 Test  #6: TSLTest_CA-granted-later ................   Passed    0.01 sec
 7/24 Test  #7: TSLTest_CA-withdrawn-granted-later ......   Passed    0.01 sec
 8/24 Test  #9: TSLTest_OCSP-invalid-type ...............   Passed    0.01 sec
 9/24 Test #11: TSLTest_OCSP-granted-later ..............   Passed    0.01 sec
10/24 Test  #8: TSLTest_CA-noqscd-granted-later .........   Passed    0.02 sec
11/24 Test #12: TSLTest_OCSP-withdrawn-granted-later ....   Passed    0.01 sec
12/24 Test #18: TSLTest_TSA-noqscd-granted-later ........   Passed    0.01 sec
13/24 Test #14: TSLTest_TSA-invalid-type ................   Passed    0.01 sec
14/24 Test #13: TSLTest_OCSP-noqscd-granted-later .......   Passed    0.01 sec
15/24 Test #10: TSLTest_OCSP-withdrawn ..................   Passed    0.02 sec
16/24 Test #19: TSLTest_CA-withdrawn-granted-before .....   Passed    0.01 sec
17/24 Test #16: TSLTest_TSA-granted-later ...............   Passed    0.01 sec
18/24 Test #15: TSLTest_TSA-withdrawn ...................   Passed    0.02 sec
19/24 Test #17: TSLTest_TSA-withdrawn-granted-later .....   Passed    0.01 sec
20/24 Test #21: TSLTest_OCSP-withdrawn-granted-before ...   Passed    0.01 sec
21/24 Test #20: TSLTest_CA-noqscd-granted-before ........   Passed    0.01 sec
22/24 Test #23: TSLTest_TSA-withdrawn-granted-before ....   Passed    0.01 sec
23/24 Test #24: TSLTest_TSA-noqscd-granted-before .......   Passed    0.01 sec
24/24 Test #22: TSLTest_OCSP-noqscd-granted-before ......   Passed    0.02 sec

100% tests passed, 0 tests failed out of 24

maybe runtest alone would account for the bulk of the tests?