Add test checker (finally!)

Author: boriel

tests/runtime/check_test.py

@@ -0,0 +1,45 @@
+#!/usr/bin/env python3
+# -*- coding: utf-8 -*-
+
+import sys
+import zx
+
+
+class Tester(zx.Emulator):
+    def __init__(self):
+        # speed_factor=None results in maximum speed and
+        # suppresses showing the emulator window.
+        # super().__init__(speed_factor=0.01)
+        super().__init__(speed_factor=None)
+
+    def on_breakpoint(self):
+        self.done = True
+
+    def run_test(self, tape_filename, ram_filename):
+        # Auto-load the tape.
+        self.load_tape(tape_filename)
+
+        # Catch the end of test.
+        self.set_breakpoint(8)
+
+        # Run the main loop until self.done is raised.
+        self.main()
+
+        # Get view to the video memory.
+        screen = self.get_memory_view(0x4000, 6 * 1024 + 768)
+
+        # Compare it with the etalon screenshot.
+        with open(ram_filename, 'rb') as f:
+            if screen != f.read():
+                print('FAIL')
+                sys.exit(1)
+
+
+def main():
+    with Tester() as t:
+        t.run_test(sys.argv[1], sys.argv[2])
+    print('OK')
+
+
+if __name__ == "__main__":
+    main()