Add test cases for numeric literals with underscores

1 files changed, 14 insertions, 0 deletions

diff --git a/tests/test_expression.h b/tests/test_expression.h
index 85d37d1460..8c026a35f5 100644
--- a/tests/test_expression.h
+++ b/tests/test_expression.h
@@ -148,6 +148,20 @@ TEST_CASE("[Expression] Scientific notation") {
 			"The expression should return the expected result.");
 }
 
+TEST_CASE("[Expression] Underscored numeric literals") {
+	Expression expression;
+
+	CHECK_MESSAGE(
+			expression.parse("1_000_000") == OK,
+			"The expression should parse successfully.");
+	CHECK_MESSAGE(
+			expression.parse("1_000.000") == OK,
+			"The expression should parse successfully.");
+	CHECK_MESSAGE(
+			expression.parse("0xff_99_00") == OK,
+			"The expression should parse successfully.");
+}
+
 TEST_CASE("[Expression] Built-in functions") {
 	Expression expression;