diff --git a/compiler/erg_parser/tests/tokenize_test.rs b/compiler/erg_parser/tests/tokenize_test.rs
index 425801ff..47744926 100644
--- a/compiler/erg_parser/tests/tokenize_test.rs
+++ b/compiler/erg_parser/tests/tokenize_test.rs
@@ -58,6 +58,7 @@ fn test_lexer_for_basic() -> ParseResult<()> {
         (BoolLit, "True"),
         (Comma, ","),
         (Symbol, "do!"),
+        (Colon, ":"),
         (Newline, newline),
         (Indent, "    "),
         (Symbol, "print!"),
@@ -67,6 +68,7 @@ fn test_lexer_for_basic() -> ParseResult<()> {
         (Dot, "."),
         (Symbol, "times!"),
         (Symbol, "do!"),
+        (Colon, ":"),
         (Newline, newline),
         (Indent, "    "),
         (Symbol, "if!"),
@@ -77,6 +79,7 @@ fn test_lexer_for_basic() -> ParseResult<()> {
         (Symbol, "z"),
         (Comma, ","),
         (Symbol, "do!"),
+        (Colon, ":"),
         (Newline, newline),
         (Indent, "    "),
         (Symbol, "print!"),
@@ -134,73 +137,6 @@ fn test_lexer_for_advanced() -> ParseResult<()> {
         (Newline, newline),
         (Newline, newline),
         (Newline, newline),
-        (Symbol, "f"),
-        (Symbol, "x"),
-        (Equal, "="),
-        (NatLit, "1"),
-        (Plus, "+"),
-        (Symbol, "x"),
-        (Plus, "+"),
-        (NatLit, "2"),
-        (Newline, newline),
-        (Symbol, "f"),
-        (Symbol, "x"),
-        (Comma, ","),
-        (Symbol, "y"),
-        (Equal, "="),
-        (Newline, newline),
-        (Indent, "    "),
-        (NatLit, "1"),
-        (Plus, "+"),
-        (Symbol, "x"),
-        (Plus, "+"),
-        (Symbol, "y"),
-        (Newline, newline),
-        (Dedent, ""),
-        (Symbol, "f"),
-        (Symbol, "x"),
-        (Comma, ","),
-        (Symbol, "y"),
-        (Comma, ","),
-        (Symbol, "z"),
-        (Equal, "="),
-        (Newline, newline),
-        (Indent, "    "),
-        (NatLit, "1"),
-        (Plus, "+"),
-        (Symbol, "x"),
-        (Plus, "+"),
-        (Symbol, "y"),
-        (Plus, "+"),
-        (Symbol, "z"),
-        (Newline, newline),
-        (Dedent, ""),
-        (Symbol, "assert"),
-        (NatLit, "4"),
-        (DblEq, "=="),
-        (Symbol, "f"),
-        (NatLit, "1"),
-        (Newline, newline),
-        (Symbol, "assert"),
-        (NatLit, "4"),
-        (DblEq, "=="),
-        (Symbol, "f"),
-        (NatLit, "1"),
-        (Comma, ","),
-        (NatLit, "1"),
-        (Newline, newline),
-        (Symbol, "assert"),
-        (NatLit, "3"),
-        (DblEq, "=="),
-        (Symbol, "f"),
-        (NatLit, "1"),
-        (Comma, ","),
-        (NatLit, "1"),
-        (Comma, ","),
-        (NatLit, "1"),
-        (Newline, newline),
-        (Newline, newline),
-        (Newline, newline),
         (Symbol, "fib"),
         (NatLit, "0"),
         (Equal, "="),
@@ -244,11 +180,11 @@ fn test_lexer_for_advanced() -> ParseResult<()> {
         (Newline, newline),
         (Indent, "    "),
         (Symbol, "then"),
-        (Colon, ":"),
+        (Walrus, ":="),
         (NatLit, "1"),
         (Newline, newline),
         (Symbol, "else"),
-        (Colon, ":"),
+        (Walrus, ":="),
         (NatLit, "2"),
         (Newline, newline),
         (Dedent, ""),
@@ -267,6 +203,8 @@ fn test_lexer_for_advanced() -> ParseResult<()> {
         (Newline, newline),
         (LBrace, "{"),
         (Symbol, "pi"),
+        (Comma, ","),
+        (EllipsisLit, "..."),
         (RBrace, "}"),
         (Equal, "="),
         (Symbol, "import"),