[tests] simplify test targets

no more moving and restoring of the conf.xml
Test targets available now:
- test_math: doesn't care about conf nor needs any other pprz code built
- test_examples: compiles all aircrafts in conf_tests.xml, doesn't care about conf.xml
- test_sim: needs a valid conf.xml with the appropriate aircrafts (Microjet for now)
- test: only calls test_math and test_examples for now (no X needed, conf.xml is not read)

.travis.yml

@@ -9,9 +9,7 @@ before_install:
 install:
   - sudo apt-get install paparazzi-dev paparazzi-jsbsim gcc-arm-none-eabi libipc-run-perl
 script:
-  - make
-  - make -C tests/math test
-  - PAPARAZZI_SRC=$PWD PAPARAZZI_HOME=$PWD CONF_XML=$PWD/conf/conf_tests.xml prove tests/examples/
+  - make test
 
 notifications:
   webhooks:

Makefile

@@ -304,25 +304,24 @@ ab_clean:
 #
 # Tests
 #
+test: test_math test_examples
 
-replace_current_conf_xml:
-	test conf/conf.xml && mv conf/conf.xml conf/conf.xml.backup.$(BUILD_DATETIME)
-	cp conf/conf_tests.xml conf/conf.xml
-
-restore_conf_xml:
-	test conf/conf.xml.backup.$(BUILD_DATETIME) && mv conf/conf.xml.backup.$(BUILD_DATETIME) conf/conf.xml
-
-run_tests:
-	cd tests; $(MAKE) test
-
-test: all replace_current_conf_xml run_tests restore_conf_xml
-
+# compiles all aircrafts in conf_tests.xml
 test_examples: all
 	CONF_XML=conf/conf_tests.xml prove tests/examples/
 
+# run some math tests that don't need whole paparazzi to be built
+test_math:
+	make -C tests/math
+
+# super simple simulator test, needs X
+# always uses conf/conf.xml, so that needs to contain the appropriate aircrafts
+# (only Microjet right now)
+test_sim: all
+	prove tests/sim
 
 .PHONY: all print_build_version _print_building _save_build_version update_google_version dox ground_segment ground_segment.opt \
 subdirs $(SUBDIRS) conf ext libpprz multimon cockpit cockpit.opt tmtc tmtc.opt generators\
 static sim_static lpctools commands \
 clean cleanspaces ab_clean dist_clean distclean dist_clean_irreversible \
-test replace_current_conf_xml run_tests restore_conf_xml test_examples
+test test_examples test_math test_sim