[test] Convert submission and validators from C++ to Python, to avoid…

… compile time for every test

test/problems/skel/generators/generators.yaml

@@ -1,4 +1,4 @@
-solution: /submissions/accepted/hello.cpp
+solution: /submissions/accepted/hello.py
 #visualizer: /visualizers/asy.sh
 # By default, generated files are not ignored.
 #gitignore_generated: false

test/problems/skel/input_validators/input_validator.py

@@ -0,0 +1,11 @@
+#!/usr/bin/env python3
+
+try:
+    if 0 <= int(input()) < 1_000_000:
+        exit(42)
+    else:
+        print("Out of range")
+        exit(43)
+except Exception as e:
+    print(e)
+    exit(43)

test/problems/skel/output_validators/output_validator.py

@@ -0,0 +1,19 @@
+#!/usr/bin/env python3
+import math
+import sys
+
+try:
+    # Do not use the default_output_validator.cpp, because it's wasteful to compile it for every test
+    if math.isclose(
+        4 * float(open(sys.argv[1]).read()) ** 0.5,
+        float(open(sys.argv[2]).read()),
+        rel_tol=1e-6,
+        abs_tol=1e-6,
+    ):
+        exit(42)
+    else:
+        print("WA")
+        exit(43)
+except Exception as e:
+    print(e)
+    exit(43)

test/problems/skel/problem.yaml

@@ -8,15 +8,15 @@ uuid: 8ee7605a-9391-8727-1ee4-61028b8de953
 license: cc by-sa
 rights_owner: author
 # 'default', 'custom', or 'custom interactive'
-validation: default
+validation: custom  # Do not use the default_output_validator.cpp, because it's wasteful to compile it for every test
 
 # One or more of:
 # case_sensitive
 # space_change_sensitive
 # float_absolute_tolerance eps
 # float_relative_tolerance eps
 # float_tolerance eps
-validator_flags: float_tolerance 1e-6
+#validator_flags:
 
 # To change the time limit factors for problemtools/Kattis, use:
 limits:

test/problems/skel/submissions/accepted/hello.py

@@ -0,0 +1,2 @@
+#!/usr/bin/env python3
+print(4 * int(input()) ** 0.5)

test/test_unit.py

@@ -30,9 +30,9 @@ def setup_skel_problem(request):
 @pytest.mark.usefixtures('setup_skel_problem')
 class TestUnit:
     def test_memory(self):
-        shutil.copy('submissions/accepted/hello.cpp', 'submissions/run_time_error/hello.cpp')
+        shutil.copy('submissions/accepted/hello.py', 'submissions/run_time_error/hello.py')
         os.system(
-            'sed -i "s/cin >> n/auto huge = new int[100000000]; cin >> huge[42]; n = huge[42]/" submissions/run_time_error/hello.cpp'
+            'sed -i "s/print/list(range(int(1e8)));print/" submissions/run_time_error/hello.py'
         )
         tools.test('run --no-generate -m 256'.split())