port some acceptance tests over to copy_example

testing/example_scripts/conftest_usageerror/conftest.py

@@ -0,0 +1,4 @@
+def pytest_configure(config):
+    import pytest
+
+    raise pytest.UsageError("hello")

testing/example_scripts/issue88_initial_file_multinodes/conftest.py

@@ -0,0 +1,14 @@
+import pytest
+
+
+class MyFile(pytest.File):
+    def collect(self):
+        return [MyItem("hello", parent=self)]
+
+
+def pytest_collect_file(path, parent):
+    return MyFile(path, parent)
+
+
+class MyItem(pytest.Item):
+    pass

testing/example_scripts/issue88_initial_file_multinodes/test_hello.py

@@ -0,0 +1,2 @@
+def test_hello():
+    pass