diff --git a/tests/test_parse.py b/tests/test_parse.py
index dc60985..b54fb4d 100644
--- a/tests/test_parse.py
+++ b/tests/test_parse.py
@@ -1,5 +1,5 @@
 from hypothesis import given
-from hypothesis.strategies import text, booleans
+from hypothesis.strategies import text, booleans, sampled_from
 
 from src import parse
 
@@ -49,3 +49,27 @@
     assert tokens[0].type == "bool"
     assert tokens[0].value == bool
     assert tokens[1].type == "EOF"
+
+
+# List of keywords the lexer understands
+keywords = [
+    "NewLang",
+    "Done",
+    "Set",
+    "To",
+    "EndSet",
+    "If",
+    "Then",
+    "Else",
+    "EndIf",
+]
+
+# Test that we can read keywords properly
+@given(sampled_from(keywords))
+def test_lexer_boolean(keyword):
+    code = keyword
+    tokenizer = parse.Tokenizer(code, "")
+    tokens = tokenizer.tokenize()
+    assert tokens[0].type == "keyword"
+    assert tokens[0].value == keyword
+    assert tokens[1].type == "EOF"