Add windows to Travis CI matrix

Because Windows builds also matters! Also, cleanup too old XCode because
nobody use them.

.travis.yml

@@ -1,10 +1,9 @@
-sudo: false
 language: cpp
 
 script:
   - eval "CXX=${COMPILER}"
   - cmake -DTERMCOLOR_TESTS=ON .
-  - make
+  - cmake --build .
   - ./test_termcolor
 
 jobs:
@@ -106,18 +105,24 @@ jobs:
           packages: clang-9
       env: COMPILER="clang++-9"
 
-    - os: osx
-      osx_image: xcode8.3
-
-    - os: osx
-      osx_image: xcode9.4
-
     - os: osx
       osx_image: xcode10
 
     - os: osx
       osx_image: xcode11
 
+    - os: windows
+      script:
+        - cmake -DTERMCOLOR_TESTS=ON .
+        - cmake --build .
+        - ./Debug/test_termcolor.exe
+
+    - os: windows
+      script:
+        - cmake -DCMAKE_SH="CMAKE_SH-NOTFOUND" -DTERMCOLOR_TESTS=ON -G "MinGW Makefiles" .
+        - cmake --build .
+        - ./test_termcolor
+
     - script:
         - mkdir -p /tmp/termcolor && cd "$_"
         - cmake $TRAVIS_BUILD_DIR

test/test.cpp

@@ -9,6 +9,10 @@
 //! :license: BSD, see LICENSE for details
 //!
 
+#if defined(_WIN32) || defined(_WIN64)
+#   define NO_ANSI_ESCAPE_SEQUENCES
+#endif
+
 // Cygwin's C++ libraries seem to be stricter than other unix platforms.
 // Strict standard conformance must be disabled by passing -U__STRICT_ANSI__
 // (or equivalent option) to the compiler, or by #undef __STRICT_ANSI__
@@ -83,12 +87,14 @@ int main(int /*argc*/, char** /*argv*/)
     if (s1.str() != "termcolor")
         return 1;
 
+#ifndef NO_ANSI_ESCAPE_SEQUENCES
     // test ansi escape characters are preserved for streams if asked
     std::stringstream s2;
     s2 << colorize << red << "term" << nocolorize << blue << "color";
 
     if (s2.str() != "\033[31m" "termcolor")
         return 2;
+#endif  // NO_ANSI_ESCAPE_SEQUENCES
 
     return 0;
 }