test: Don't run sakila test by default; set variables for tests

Sakila needs a MySQL database running. Set DBPATH and SOURCEFILE for the
sqlite-env.load and csv-districts-env.out tests.

debian/tests/testsuite

@@ -0,0 +1,9 @@
+#!/bin/sh
+
+set -eux
+
+pg_virtualenv << EOF
+	set -eux
+	cd test
+	PGSUPERUSER=\$PGUSER make -k all
+EOF

test/Makefile

@@ -44,6 +44,8 @@ REGRESS= allcols.load 		    \
 
 PGLOADER ?= ../build/bin/pgloader
 PGSUPERUSER ?= postgres
+export DBPATH = sqlite/sqlite.db # needed by sqlite-env.load
+export SOURCEFILE = data/2013_Gaz_113CDs_national.txt # needed by csv-districts-env.out
 
 EXTRA_OPTS =
 ifneq (,$(findstring ccl,$(CL)))
@@ -61,7 +63,7 @@ remote: prepare $(REMOTE:.load=.out)
 
 all: prepare $(OUT)
 
-prepare: bossa.sql sakila
+prepare: bossa.sql
 	-dropdb -U $(PGSUPERUSER) pgloader
 	-dropdb -U $(PGSUPERUSER) stocks
 	-dropdb -U $(PGSUPERUSER) ip4r