CI: Replace pytest with pre-commit hook

tests/python_build/validate_builders.py

@@ -0,0 +1,63 @@
+#!/usr/bin/env python3
+from __future__ import annotations
+
+if __name__ != "__main__":
+    raise ImportError(f"{__name__} should not be used as a module.")
+
+import os
+import sys
+from typing import Any, Callable
+
+sys.path.insert(0, os.path.join(os.path.dirname(os.path.abspath(__file__)), "../../"))
+
+from gles3_builders import build_gles3_header
+from glsl_builders import build_raw_header, build_rd_header
+
+FUNC_PATH_KWARGS: list[tuple[Callable[..., None], str, dict[str, Any]]] = [
+    (
+        build_gles3_header,
+        "tests/python_build/fixtures/gles3/vertex_fragment.out",
+        {"shader": "tests/python_build/fixtures/gles3/vertex_fragment.glsl"},
+    ),
+    (
+        build_raw_header,
+        "tests/python_build/fixtures/glsl/compute.out",
+        {"shader": "tests/python_build/fixtures/glsl/compute.glsl"},
+    ),
+    (
+        build_raw_header,
+        "tests/python_build/fixtures/glsl/vertex_fragment.out",
+        {"shader": "tests/python_build/fixtures/glsl/vertex_fragment.glsl"},
+    ),
+    (
+        build_rd_header,
+        "tests/python_build/fixtures/rd_glsl/compute.out",
+        {"shader": "tests/python_build/fixtures/rd_glsl/compute.glsl"},
+    ),
+    (
+        build_rd_header,
+        "tests/python_build/fixtures/rd_glsl/vertex_fragment.out",
+        {"shader": "tests/python_build/fixtures/rd_glsl/vertex_fragment.glsl"},
+    ),
+]
+
+
+def main() -> int:
+    ret = 0
+
+    for func, path, kwargs in FUNC_PATH_KWARGS:
+        if os.path.exists(out_path := os.path.abspath(path)):
+            with open(out_path, "rb") as file:
+                raw = file.read()
+            func(path, **kwargs)
+            with open(out_path, "rb") as file:
+                if raw != file.read():
+                    ret += 1
+        else:
+            func(path, **kwargs)
+            ret += 1
+
+    return ret
+
+
+sys.exit(main())