added test for accepting a file as input

tests/CMakeLists.txt

@@ -7,3 +7,4 @@ set(CTEST_BINARY_DIRECTORY ${PROJECT_BINARY_DIR}/tests)
 # Provide test to run here or include another CMakeLists.txt
 
 add_subdirectory(logging)
+add_subdirectory(input_file)

tests/input_file/CMakeLists.txt

@@ -0,0 +1,9 @@
+include(CTest)
+
+# ------------------------------------------------------- #
+# CTEST 1
+# test if the program accepts a file as input
+
+add_test(NAME input_file_check
+        WORKING_DIRECTORY ${PROJECT_SOURCE_DIR}/bin/check
+        COMMAND python ${GEMSTONE_TEST_DIR}/input_file/test_input_file.py ${GEMSTONE_TEST_DIR}/input_file/test.gem)

tests/input_file/test.gem

@@ -0,0 +1,6 @@
+
+import "std.io"
+
+fun main {
+    print("Hello, World!!!")
+}

tests/input_file/test_input_file.py

@@ -0,0 +1,36 @@
+import os.path
+import subprocess
+import sys
+import logging
+from logging import info
+
+
+def check_accept():
+    info("testing handling of input file...")
+
+    logging.basicConfig(level=logging.INFO)
+
+    test_file_name = sys.argv[1]
+
+    p = subprocess.run(["./gsc", test_file_name], capture_output=True, text=True)
+
+    assert p.returncode == 0
+
+
+def check_abort():
+    info("testing handling of missing input file...")
+
+    logging.basicConfig(level=logging.INFO)
+
+    p = subprocess.run("./gsc", capture_output=True, text=True)
+
+    assert p.returncode == 1
+
+
+if __name__ == "__main__":
+    logging.basicConfig(level=logging.INFO)
+    info("check if binary exists...")
+    assert os.path.exists("./gsc")
+
+    check_accept()
+    check_abort()