run tests in travis

.travis.yml

@@ -11,4 +11,5 @@ script:
   - sudo unlink /usr/bin/gcc && sudo ln -s /usr/bin/gcc-5 /usr/bin/gcc
   - export VROOT=$(pwd)
   - cd ./compiler
-  - make
+  - make
+  - make test

compiler/Makefile

@@ -7,5 +7,8 @@ v: v.c
 v.c:
 	wget https://raw.githubusercontent.com/vlang/vc/master/v.c
 
+test:
+	find .. -name '*_test.v' | xargs v {}
+
 clean:
 	-rm vc v.c