Revert "travis. remove tests, go module problem workaroud"

This reverts commit 712b52d.

Author: Amygos

.travis.yml

@@ -12,6 +12,7 @@ matrix:
       script:
         - cp $TRAVIS_BUILD_DIR/wax/testdata/config.json $TRAVIS_BUILD_DIR/sun/sun-api
         - cp $TRAVIS_BUILD_DIR/wax/testdata/*png $TRAVIS_BUILD_DIR/sun/sun-api
+        - cd $TRAVIS_BUILD_DIR/sun/sun-api && go test
         - cd $TRAVIS_BUILD_DIR/sun/sun-api && go build
 
     - language: go
@@ -34,6 +35,7 @@ matrix:
       script:
         - cp $TRAVIS_BUILD_DIR/wax/testdata/config.json $TRAVIS_BUILD_DIR/wax
         - cp $TRAVIS_BUILD_DIR/wax/testdata/*png $TRAVIS_BUILD_DIR/wax
+        - cd $TRAVIS_BUILD_DIR/wax && go test
         - cd $TRAVIS_BUILD_DIR/wax && go build
 
     - language: go