adding perftest script

perftest/depth.py

@@ -0,0 +1,53 @@
+import subprocess
+import time
+
+def do_timing():
+    bis = subprocess.Popen(['cargo', 'run', '--release'], 
+                            stdout=subprocess.PIPE,
+                            stdin=subprocess.PIPE)
+
+    bis.stdin.write(b'isready\n')
+    bis.stdin.flush()
+    for line in bis.stdout:
+        if line[:7] == b'readyok':
+            break
+
+    bis.stdin.write(b'position fen r3kb1r/pppqn1p1/2n4p/5b2/3PQ3/5NP1/PPP2PBP/R1B2RK1 w kq - 1 13\n')
+    bis.stdin.write(b'go depth 8\n')
+    bis.stdin.flush()
+    start = time.time()
+
+    for line in bis.stdout:
+        print("line: " + str(line))
+        if line[:8] == b'bestmove':
+            break
+
+    bis.stdin.write(b'position fen 3r4/2p2r1k/p5p1/Pp5p/3BRP2/bqP4P/6PK/2Q1R3 w - - 6 40\n')
+    bis.stdin.write(b'go depth 7\n')
+    bis.stdin.flush()
+
+    for line in bis.stdout:
+        print("line: " + str(line))
+        if line[:8] == b'bestmove':
+            break
+
+    bis.stdin.write(b'position fen 8/6k1/7N/5p2/1R1P1B1P/2P5/4PP1P/6K1 w - - 0 52\n')
+    bis.stdin.write(b'go depth 9\n')
+    bis.stdin.flush()
+
+    for line in bis.stdout:
+        print("line: " + str(line))
+        if line[:8] == b'bestmove':
+            break
+        
+    end = time.time()
+    return end - start
+
+measure = 0
+nMes = 3
+for i in range(0, nMes):
+    measure = measure + do_timing()
+
+measure = measure / nMes
+
+print(f"finished in {round(measure, 3)} s")