Refactoring main_function_test.py

unit_test/main_util_fixtures.py

@@ -0,0 +1,43 @@
+import pytest
+
+import sys
+import os
+import subprocess
+
+from cibuildwheel import linux, macos, windows
+
+
+class ArgsInterceptor(object):
+    def __call__(self, *args, **kwargs):
+        self.args = args
+        self.kwargs = kwargs
+
+
+MOCK_PROJECT_DIR = 'some_project_dir'
+
+@pytest.fixture(autouse=True)
+def mock_protection(monkeypatch):
+    def fail_on_call(*args, **kwargs):
+        raise RuntimeError("This should never be called")
+
+    monkeypatch.setattr(subprocess, 'Popen', fail_on_call)
+    monkeypatch.setattr(windows, 'urlopen', fail_on_call)
+    monkeypatch.setattr(windows, 'build', fail_on_call)
+    monkeypatch.setattr(linux, 'build', fail_on_call)
+    monkeypatch.setattr(macos, 'build', fail_on_call)
+    monkeypatch.setattr(os.path, 'exists', lambda x: True)
+    monkeypatch.setattr(sys, 'argv', ['cibuildwheel', MOCK_PROJECT_DIR])
+
+
+@pytest.fixture(params=['linux', 'macos', 'windows'])
+def platform(request, monkeypatch):
+    platform_value = request.param
+    monkeypatch.setenv('CIBW_PLATFORM', platform_value)
+    return platform_value
+
+
+@pytest.fixture
+def intercepted_build_args(platform, monkeypatch):
+    intercepted = ArgsInterceptor()
+    monkeypatch.setattr(globals()[platform], 'build', intercepted)
+    return intercepted