Compile actual test files

.travis.yml

@@ -5,4 +5,4 @@ before_install:
   - docker pull yglukhov/nim-base
 script:
   - docker run yglukhov/nim-base nim --version
-  - docker run -v "$(pwd):/project" -w /project yglukhov/nim-base nimble install -y;./test.sh
+  - docker run -v "$(pwd):/project" -w /project yglukhov/nim-base nimble install -y;./tests/test.sh

tests/test.sh

@@ -1,9 +1,9 @@
 #!/bin/bash
 
-# nim c tests/code_stream_test.nim
-# nim c tests/gas_meter_test.nim
-# nim c tests/memory_test.nim
-# nim c tests/stack_test.nim
+nim c tests/code_stream_test.nim
+nim c tests/gas_meter_test.nim
+nim c tests/memory_test.nim
+nim c tests/stack_test.nim
 ./tests/code_stream_test
 ./tests/gas_meter_test
 ./tests/memory_test