I get:
libgdata:ERROR:general.c:537:test_entry_parse_xml: assertion failed: (_test_success == TRUE)
../../build-aux/test-driver: line 95:  7825 Aborted                 (core dumped) "$@" > $log_file 2>&1
FAIL: general
FAIL
GTester: last random seed: R02Sdd87cef5068d2ae9b8a62c0c3e3ed723
/bin/sh: line 1:  7774 Terminated              gtester --verbose general perf calendar client-login-authorizer contacts documents oauth1-authorizer picasaweb youtube
Makefile:1620: recipe for target 'test' failed
make[2]: *** [test] Error 143
make[2]: *** Waiting for unfinished jobs....
../../build-aux/test-driver: line 95:  7830 Aborted                 (core dumped) "$@" > $log_file 2>&1
FAIL: calendar
PASS: contacts
../../build-aux/test-driver: line 95:  8120 Aborted                 (core dumped) "$@" > $log_file 2>&1
FAIL: tasks
PASS: perf
PASS: picasaweb
PASS: authorization
PASS: documents
PASS: client-login-authorizer
PASS: oauth1-authorizer
PASS: streams
../../build-aux/test-driver: line 95:  7822 Aborted                 (core dumped) "$@" > $log_file 2>&1
FAIL: youtube
make[4]: Entering directory '/var/tmp/portage/dev-libs/libgdata-0.16.1/work/libgdata-0.16.1/gdata/tests'
make[4]: Nothing to be done for 'all'.
make[4]: Leaving directory '/var/tmp/portage/dev-libs/libgdata-0.16.1/work/libgdata-0.16.1/gdata/tests'
============================================================================
Testsuite summary for libgdata 0.16.1
============================================================================
# TOTAL: 12
# PASS:  8
# SKIP:  0
# XFAIL: 0
# FAIL:  4
# XPASS: 0
# ERROR: 0
============================================================================
See gdata/tests/test-suite.log
Please report to https://bugzilla.gnome.org/enter_bug.cgi?product=libgdata
============================================================================
Makefile:1234: recipe for target 'test-suite.log' failed
make[3]: *** [test-suite.log] Error 1
make[3]: Leaving directory '/var/tmp/portage/dev-libs/libgdata-0.16.1/work/libgdata-0.16.1/gdata/tests'
Makefile:1340: recipe for target 'check-TESTS' failed
make[2]: *** [check-TESTS] Error 2
make[2]: Leaving directory '/var/tmp/portage/dev-libs/libgdata-0.16.1/work/libgdata-0.16.1/gdata/tests'
Makefile:1490: recipe for target 'check-am' failed
make[1]: *** [check-am] Error 2
make[1]: Leaving directory '/var/tmp/portage/dev-libs/libgdata-0.16.1/work/libgdata-0.16.1/gdata/tests'
Makefile:3084: recipe for target 'check-recursive' failed
make: *** [check-recursive] Error 1