Here are the results of running t/Acquisition.t without a database set up:

t/Acquisition.t .. unable to locate Koha configuration file koha-conf.xml at C4/Context.pm line 244.
unable to locate Koha configuration file koha-conf.xml at C4/Context.pm line 244.
unable to locate Koha configuration file koha-conf.xml at C4/Context.pm line 244.
unable to locate Koha configuration file koha-conf.xml at C4/Context.pm line 244.
unable to locate Koha configuration file koha-conf.xml at C4/Context.pm line 244.
unable to locate Koha configuration file koha-conf.xml at C4/Context.pm line 244.
Use of uninitialized value in concatenation (.) or string at C4/Templates.pm line 154.
unable to locate Koha configuration file koha-conf.xml at C4/Context.pm line 244.
unable to locate Koha configuration file koha-conf.xml at C4/Context.pm line 244.
Use of uninitialized value in concatenation (.) or string at C4/Auth_with_cas.pm line 42.
unable to locate Koha configuration file koha-conf.xml at C4/Context.pm line 244.
t/Acquisition.t .. 1/3 unable to locate Koha configuration file koha-conf.xml at C4/Context.pm line 244.
Can't call method "config" on unblessed reference at Koha/Database.pm line 56.
    # Child (Test for get_rounded_price) exited without calling finalize()

#   Failed test 'Test for get_rounded_price'
#   at /usr/local/share/perl/5.20.2/Test/Builder.pm line 279.
# Looks like you failed 1 test of 3.
# Looks like your test exited with 2 just after 3.
t/Acquisition.t .. Dubious, test returned 2 (wstat 512, 0x200)
Failed 1/3 subtests

Test Summary Report
-------------------
t/Acquisition.t (Wstat: 512 Tests: 3 Failed: 1)
  Failed test:  3
  Non-zero exit status: 2
Files=1, Tests=3,  3 wallclock secs ( 0.03 usr  0.02 sys +  2.11 cusr  0.13 csys =  2.29 CPU)
Result: FAIL

These tests should be moved to a file in t/db_dependent