Add more tests to improve test coverage

Author: domdfcoding

tests/demo_code.py

@@ -7,3 +7,11 @@
 	pass
 else:  # pragma: no cover (<py38)
 	pass
+
+import platform
+
+if platform.processor() != "x86_64":  # pragma: no cover
+	pass
+
+if platform.python_branch():  # pragma: no cover (hard to test)
+	pass

tests/test_grammar.py

@@ -1,7 +1,7 @@
 # stdlib
 import platform
 import sys
-from typing import Tuple
+from typing import Tuple, Type
 
 # 3rd party
 import pytest
@@ -80,13 +80,17 @@ def test_grammar_current_platform_etc():
 	assert evaluate_exclude(f"{platform.system()}")
 
 
-@pytest.mark.parametrize("expression", [
-		"36",
-		"36 and",
-		"py36 and",
-		"windows and",
-		"!bpython and pypy",
+@pytest.mark.parametrize("expression, exception", [
+		("36", ParseBaseException),
+		("36 and", ParseBaseException),
+		("py36 and", ParseBaseException),
+		("windows and", ParseBaseException),
+		("!bpython and pypy", ParseBaseException),
+		("<py38+", SyntaxError),
 		])
-def test_bad_grammar(expression: str):
-	with pytest.raises(ParseBaseException):
+def test_bad_grammar(expression: str, exception: Type[Exception]):
+	with pytest.raises(exception):
 		evaluate_exclude(expression)
+
+
+# TODO: tests for LogicalOp classes

tests/test_plugin_/test_plugin_3_6_.txt

@@ -1,5 +1,5 @@
 Name                 Stmts   Miss  Cover
 ----------------------------------------
-tests/demo_code.py       3      0   100%
+tests/demo_code.py       4      0   100%
 ----------------------------------------
-TOTAL                    3      0   100%
+TOTAL                    4      0   100%