Add Python script to test the challenges directly

tests/challenges.py

@@ -0,0 +1,79 @@
+#!/usr/bin/env python3
+from typing import List
+import subprocess
+
+
+def run_challenge(challenge: int, inputs: List[str], expected: List[str]) -> None:
+    print(f"[challenge {challenge:02}]", end=" ")
+    res = subprocess.run(
+        [f"../build/ex{challenge:02}", *inputs],
+        capture_output=True,
+        check=True,
+        text=True,
+    )
+
+    if not expected:
+        print(res.stdout)
+        return
+
+    assert all(
+        out in res.stdout for out in expected
+    ), f"Expected output:\n{expected}\nActual output:\n{res.stdout}"
+
+    print("OK")
+
+
+def main():
+    run_challenge(
+        challenge=1,
+        inputs=[
+            "49276d206b696c6c696e6720796f757220627261696e206c69"
+            "6b65206120706f69736f6e6f7573206d757368726f6f6d"
+        ],
+        expected=["SSdtIGtpbGxpbmcgeW91ciBicmFpbiBsaWtlIGEgcG9pc29ub3VzIG11c2hyb29t"],
+    )
+
+    run_challenge(
+        challenge=2,
+        inputs=[
+            "1c0111001f010100061a024b53535009181c",
+            "686974207468652062756c6c277320657965",
+        ],
+        expected=["746865206b696420646f6e277420706c6179"],
+    )
+
+    run_challenge(
+        challenge=3,
+        inputs=["1b37373331363f78151b7f2b783431333d78397828372d363c78373e783a393b3736"],
+        expected=["Cooking MC's like a pound of bacon"],
+    )
+
+    run_challenge(
+        challenge=4, inputs=["../data/4.txt"], expected=["Now that the party is jumping\\n"],
+    )
+
+    run_challenge(
+        challenge=5,
+        inputs=["ICE", "../data/5.txt"],
+        expected=[
+            "0b3637272a2b2e63622c2e69692a23693a2a3c6324202d623d"
+            "63343c2a26226324272765272a282b2f20430a652e2c652a31"
+            "24333a653e2b2027630c692b20283165286326302e27282f"
+        ],
+    )
+
+    with open("output6.txt", "r") as f:
+        output6 = f.read()
+    run_challenge(
+        challenge=6,
+        inputs=["../data/6.txt"],
+        expected=["Terminator X: Bring the noise", output6],
+    )
+
+    run_challenge(
+        challenge=7, inputs=["YELLOW SUBMARINE", "../data/7.txt"], expected=[output6],
+    )
+
+
+if __name__ == "__main__":
+    main()