add self test

.github/workflows/ci.yml

@@ -15,9 +15,9 @@ on:
     types: [published]
 
 env:
-  CTEST_NO_TESTS_ACTION: "error"
-  CTEST_PARALLEL_LEVEL: 0
   CMAKE_BUILD_PARALLEL_LEVEL: 4
+  CTEST_NO_TESTS_ACTION: error
+  CTEST_PARALLEL_LEVEL: 0
 
 jobs:
 
@@ -62,10 +62,13 @@ jobs:
       run: cmake --install build
 
     - name: CMake configure examples
-      run: cmake -B demos/build -S demos -DCMAKE_PREFIX_PATH:PATH=${{ runner.temp }}
+      run: cmake -B builddemos -S demos -DCMAKE_PREFIX_PATH:PATH=${{ runner.temp }}
 
     - name: CMake build examples
-      run: cmake --build demos/build
+      run: cmake --build builddemos
+
+    - name: CTest
+      run: ctest --test-dir builddemos --output-on-failure
 
     - name: Create package
       if: github.event.action == 'published'
@@ -122,10 +125,19 @@ jobs:
       with:
         version: "2.0"
 
-    - uses: actions/checkout@v2
+    - uses: actions/checkout@v4
 
     - name: Configure
-      run: cmake -Bbuild --toolchain cmake/dos.cmake
+      run: cmake -Bbuild --toolchain cmake/dos.cmake --install-prefix=${{ runner.temp }}
 
     - name: Build
       run: cmake --build build
+
+    - name: CMake install (for examples)
+      run: cmake --install build
+
+    - name: CMake configure examples
+      run: cmake -B builddemos -S demos -DCMAKE_PREFIX_PATH=${{ runner.temp }} --toolchain ../cmake/dos.cmake
+
+    - name: CMake build examples
+      run: cmake --build builddemos

demos/CMakeLists.txt

@@ -7,15 +7,23 @@ endif()
 
 project(PDcursesDemos LANGUAGES C)
 
+enable_testing()
+
 find_package(PDCurses CONFIG REQUIRED)
 
-foreach(f IN ITEMS testcurs ozdemo xmas firework ptest rain worm)
+foreach(f IN ITEMS testcurs ozdemo xmas firework ptest rain worm test_init)
   add_executable(${f} ${f}.c)
   target_link_libraries(${f} PRIVATE CURSES::CURSES)
 endforeach()
 
 add_executable(tuidemo tui.c tuidemo.c)
 target_link_libraries(tuidemo PRIVATE CURSES::CURSES)
 
-# --- auto-ignore build directory
 file(GENERATE OUTPUT .gitignore CONTENT "*")
+
+add_test(NAME Init COMMAND test_init)
+set_tests_properties(Init PROPERTIES
+SKIP_REGULAR_EXPRESSION "Can't open display|no DISPLAY variable set"
+)
+
+# Note: using STDIN INPUT_FILE for CTest doesn't work as Curses wants an actual keypress, not pipe.

demos/test_init.c

@@ -0,0 +1,36 @@
+// test the very basics are working
+// no refresh() or getch() as this requires a terminal and wouldn't work on CI
+// without additional measures.
+
+#include <stdio.h>
+#include <stdlib.h>
+
+#include <curses.h>
+
+int main(void){
+    WINDOW* w = initscr();
+    if(w == NULL){
+        fprintf(stderr, "Error initialising ncurses.\n");
+        return 77;
+    }
+
+    int i = noecho();
+    if(i == ERR){
+        fprintf(stderr, "Error turning off echo.\n");
+        return 77;
+    }
+
+    i = printw("Hello, PDCurses!");
+    if(i == ERR){
+        fprintf(stderr, "Error printing to screen.\n");
+        return 77;
+    }
+
+    i = endwin();
+    if(i == ERR){
+        fprintf(stderr, "Error ending ncurses.\n");
+        return 77;
+    }
+
+    return EXIT_SUCCESS;
+}