added testcases.

appveyor.yml

@@ -40,7 +40,10 @@ build: off
 # to run your custom scripts instead of automatic MSBuild
 build_script:
   - cmd: call "%INIT_BAT%" %VCVARARG%
-  - cmd: set PATH=%QT_PATH%\bin;C:\tools\vcpkg\installed\x86-windows\tools;%PATH%
+  - cmd: set PATH=%QT_PATH%\bin;%PATH%
   - cmd: echo %PATH%
-  - cmd: qmake
+  - cmd: qmake CONFIG+=release
   - cmd: nmake
+  - cmd: release\cpi.exe tests\helloworld.cpp
+  - cmd: release\cpi.exe tests\sqrt.cpp 7
+  - cmd: release\cpi.exe tests\fibonacci.cpp 10

tests/fibonacci.cpp

@@ -0,0 +1,21 @@
+#include <functional>
+#include <iostream>
+
+
+int main(int argc, char *argv[])
+{
+    if (argc != 2) {
+        return 0;
+    }
+
+    std::function<int64_t(int64_t)> fib = [&fib](int64_t n) {
+        if (n == 0 || n == 1) {
+            return n;
+        } else {
+            return fib(n - 2) + fib(n - 1);
+        }
+    };
+
+    std::cout << "fibonacci: " << fib(atoi(argv[1])) << std::endl;
+    return 0;
+}

tests/helloworld.cpp

@@ -0,0 +1,7 @@
+#include <iostream>
+
+int main()
+{
+    std::cout << "Hello world\n";
+    return 0;
+}

tests/sqrt.cpp

@@ -0,0 +1,19 @@
+#include <cmath>
+#include <cstdlib>
+#include <iostream>
+
+
+int main(int argc, char *argv[])
+{
+    if (argc != 2) {
+        return 0;
+    }
+
+    auto square = [](int n) { return n * n; };  // lambda expressions
+
+    std::cout << "sqrt: " << sqrt(atoi(argv[1])) << std::endl;
+    std::cout << "square: " << square(atoi(argv[1])) << std::endl;
+    return 0;
+}
+
+// CompileOptions: -lm