verify_snippet: Attempting to add csharp

Moving some bits around for readability

Author: calaldees

teachprogramming/lib/verify_snippets/conftest.py

@@ -8,6 +8,7 @@
 from types import MappingProxyType
 import subprocess
 import logging
+import shutil
 
 import pytest
 
@@ -16,11 +17,28 @@
 
 PATH_PROJECTS = Path("projects").absolute()
 PATH_LANGUAGES = Path('languages').absolute()
-LOOKUP_LANGUAGE_FOLDER = MappingProxyType({
+LANGUAGE_TO_FOLDER_MAPPING = MappingProxyType({
     'py': 'python',
     'cs': 'csharp',
 })
 
+# `tempdir` creates 'secure' temp folders.
+# These are not available to other users.
+# docker on mac runs as a different user.
+# None of the temp folders from env work because again - owned by the user
+#   environ.get('TMPDIR') or environ.get('TEMP') or environ.get('TMP') or
+tempdir = Path('.').joinpath('_language_runner')
+tempdir.mkdir(exist_ok=True)
+def clear(path: Path):
+    # https://docs.python.org/3/library/pathlib.html#pathlib.Path.walk
+    for root, dirs, files in path.walk(top_down=False):
+        for name in files:
+            (root / name).unlink()
+        for name in dirs:
+            (root / name).rmdir()
+
+
+# Docker -----------------------------------------------------------------------
 
 def get_built_docker_language_runners() -> set[str]:
     result = subprocess.run(
@@ -32,41 +50,30 @@ def get_built_docker_language_runners() -> set[str]:
     )
     return {container['Tag'] for container in map(json.loads, filter(None, result.stdout.split('\n')))}
 
-BUILT_LANGUAGES = get_built_docker_language_runners()
+BUILT_LANGUAGES_RUNNERS = get_built_docker_language_runners()
+
+def get_docker_folder_for_language(language: str) -> Path:
+    return PATH_LANGUAGES.joinpath(LANGUAGE_TO_FOLDER_MAPPING.get(language, language))
 
 def build_docker_language_runner(language) -> subprocess.CompletedProcess:
     return subprocess.run(
-        ("docker", "build", PATH_LANGUAGES.joinpath(LOOKUP_LANGUAGE_FOLDER.get(language, language)), "--tag", f"language_runner:{language}"),
+        ("docker", "build", get_docker_folder_for_language(language), "--tag", f"language_runner:{language}"),
         capture_output=True,
         timeout=120,
         text=True,
         check=True,
     )
 
 
-# `tempdir` creates 'secure' temp folders.
-# These are not available to other users.
-# docker on mac runs as a different user.
-# None of the temp folders from env work because again - owned by the user
-#   environ.get('TMPDIR') or environ.get('TEMP') or environ.get('TMP') or
-tempdir = Path('.').joinpath('_language_runner')
-tempdir.mkdir(exist_ok=True)
-def clear(path: Path):
-    # https://docs.python.org/3/library/pathlib.html#pathlib.Path.walk
-    for root, dirs, files in path.walk(top_down=False):
-        for name in files:
-            (root / name).unlink()
-        for name in dirs:
-            (root / name).rmdir()
-
+# Project Compile --------------------------------------------------------------
 
 class ProjectItemSpec(NamedTuple):
     name: str
     language: str
     version: str
     code: str
 
-    def exec_language(self, language_args: tuple[str]):
+    def exec_language(self, language_args: tuple[str]=()):
         workdir = f"/{self.language}"
         docker_args = (
             "docker", "run", "--rm",
@@ -103,15 +110,21 @@ def get_java_main_classname(code: str) -> str:
     if match := re.search(r'class (\w+?) .*public static void main', code, re.DOTALL):
         return match.group(1)
     raise Exception('unable to find top level classname for filename', code)
-
 def compile_test_java(spec: ProjectItemSpec):
     path_code_file = tempdir.joinpath(get_java_main_classname(spec.code) + ".java")
     path_code_file.write_text(spec.code)
     spec.exec_language(("javac", path_code_file.name))
 
+
+def copy_cs_file_to_workdir(filename: str):
+    shutil.copyfile(get_docker_folder_for_language('cs').joinpath(filename), tempdir.joinpath(filename))
 def compile_test_csharp(spec: ProjectItemSpec):
-    # csharp create manifest?
-    raise NotImplementedError('')
+    copy_cs_file_to_workdir('main.csproj')
+    copy_cs_file_to_workdir('packages.log.json')
+    path_code_file = tempdir.joinpath(spec.name)
+    path_code_file.write_text(spec.code)
+    # TODO: edit `main.csproj` to point to top level cs class
+    spec.exec_language()  # The containers base command is already `dotnet run`
 
 
 LANGUAGES: MappingProxyType[str, Callable] = MappingProxyType(
@@ -159,11 +172,11 @@ def pytest_collection_finish(session: pytest.Session):
         for item in session.items
         if hasattr(item, 'spec')
     }
-    language_runners_to_build = (languages_in_items - BUILT_LANGUAGES) & LANGUAGES.keys()
+    language_runners_to_build = (languages_in_items - BUILT_LANGUAGES_RUNNERS) & LANGUAGES.keys()
     for language in language_runners_to_build:
         print(f"docker build --tag language_runner:{language}")  #log.info
         build_docker_language_runner(language)
-        BUILT_LANGUAGES.add(language)
+        BUILT_LANGUAGES_RUNNERS.add(language)
 
 
 def pytest_sessionfinish(session: pytest.Session, exitstatus: int):