diff --git a/stdlib/test/builtin/test_string_literal.mojo b/stdlib/test/builtin/test_string_literal.mojo
index 28ca91a1af..bec6a72b04 100644
--- a/stdlib/test/builtin/test_string_literal.mojo
+++ b/stdlib/test/builtin/test_string_literal.mojo
@@ -369,64 +369,87 @@ def test_center():
 
 
 def test_split():
-    var d = "hello world".split()
-    assert_true(len(d) == 2)
-    assert_true(d[0] == "hello")
-    assert_true(d[1] == "world")
-    d = "hello \t\n\n\v\fworld".split("\n")
-    assert_true(len(d) == 3)
-    assert_true(d[0] == "hello \t" and d[1] == "" and d[2] == "\v\fworld")
+    fn st(value: StringLiteral) -> StringLiteral:
+        return value
+
+    # Should add all whitespace-like chars as one
+    # test all unicode separators
+    # 0 is to build a String with null terminator
+    # alias next_line = List[UInt8](0xC2, 0x85, 0)
+    # """TODO: \\x85"""
+    # alias unicode_line_sep = List[UInt8](0xE2, 0x80, 0xA8, 0)
+    # """TODO: \\u2028"""
+    # alias unicode_paragraph_sep = List[UInt8](0xE2, 0x80, 0xA9, 0)
+    # """TODO: \\u2029"""
+    # TODO add line and paragraph separator as StringLiteral once unicode
+    # escape secuences are accepted
+    univ_sep_var = (
+        st(" ")
+        + st("\t")
+        + st("\n")
+        + st("\r")
+        + st("\v")
+        + st("\f")
+        + st("\x1c")
+        + st("\x1d")
+        + st("\x1e")
+        # + st(next_line)
+        # + st(unicode_line_sep)
+        # + st(unicode_paragraph_sep)
+    )
+    s = univ_sep_var + "hello" + univ_sep_var + "world" + univ_sep_var
+    assert_equal(s.split(), List[String]("hello", "world"))
 
     # should split into empty strings between separators
-    d = "1,,,3".split(",")
-    assert_true(len(d) == 4)
-    assert_true(d[0] == "1" and d[1] == "" and d[2] == "" and d[3] == "3")
-    d = "abababaaba".split("aba")
-    assert_true(len(d) == 4)
-    assert_true(d[0] == "" and d[1] == "b" and d[2] == "" and d[3] == "")
+    assert_equal(st("1,,,3").split(","), List[String]("1", "", "", "3"))
+    assert_equal(st(",,,").split(","), List[String]("", "", "", ""))
+    assert_equal(st(" a b ").split(" "), List[String]("", "a", "b", ""))
+    assert_equal(st("abababaaba").split("aba"), List[String]("", "b", "", ""))
+    assert_true(len(st("").split()) == 0)
+    assert_true(len(st(" ").split()) == 0)
+    assert_true(len(st("").split(" ")) == 1)
+    assert_true(len(st(",").split(",")) == 2)
+    assert_true(len(st(" ").split(" ")) == 2)
+    assert_true(len(st("").split("")) == 2)
+    assert_true(len(st("  ").split(" ")) == 3)
+    assert_true(len(st("   ").split(" ")) == 4)
 
     # should split into maxsplit + 1 items
-    d = "1,2,3".split(",", 0)
-    assert_true(len(d) == 1)
-    assert_true(d[0] == "1,2,3")
-    d = "1,2,3".split(",", 1)
-    assert_true(len(d) == 2)
-    assert_true(d[0] == "1" and d[1] == "2,3")
-
-    assert_true(len("".split()) == 0)
-    assert_true(len(" ".split()) == 0)
-    assert_true(len("".split(" ")) == 1)
-    assert_true(len(" ".split(" ")) == 2)
-    assert_true(len("  ".split(" ")) == 3)
-    assert_true(len("   ".split(" ")) == 4)
+    assert_equal(st("1,2,3").split(",", 0), List[String]("1,2,3"))
+    assert_equal(st("1,2,3").split(",", 1), List[String]("1", "2,3"))
 
-    with assert_raises():
-        _ = "".split("")
-
-    # Matches should be properly split in multiple case
-    var d2 = " "
-    var in2 = "modcon is coming soon"
-    var res2 = in2.split(d2)
-    assert_equal(len(res2), 4)
-    assert_equal(res2[0], "modcon")
-    assert_equal(res2[1], "is")
-    assert_equal(res2[2], "coming")
-    assert_equal(res2[3], "soon")
+    # Split in middle
+    assert_equal(st("faang").split(st("n")), List[String]("faa", "g"))
 
     # No match from the delimiter
-    var d3 = "x"
-    var in3 = "hello world"
-    var res3 = in3.split(d3)
-    assert_equal(len(res3), 1)
-    assert_equal(res3[0], "hello world")
+    assert_equal(st("hello world").split(st("x")), List[String]("hello world"))
 
     # Multiple character delimiter
-    var d4 = "ll"
-    var in4 = "hello"
-    var res4 = in4.split(d4)
-    assert_equal(len(res4), 2)
-    assert_equal(res4[0], "he")
-    assert_equal(res4[1], "o")
+    assert_equal(st("hello").split(st("ll")), List[String]("he", "o"))
+
+    res = List[String]("", "bb", "", "", "", "bbb", "")
+    assert_equal(st("abbaaaabbba").split("a"), res)
+    assert_equal(st("abbaaaabbba").split("a", 8), res)
+    s1 = st("abbaaaabbba").split("a", 5)
+    assert_equal(s1, List[String]("", "bb", "", "", "", "bbba"))
+    assert_equal(st("aaa").split("a", 0), List[String]("aaa"))
+    assert_equal(st("a").split("a"), List[String]("", ""))
+    assert_equal(st("1,2,3").split("3", 0), List[String]("1,2,3"))
+    assert_equal(st("1,2,3").split("3", 1), List[String]("1,2,", ""))
+    assert_equal(st("1,2,3,3").split("3", 2), List[String]("1,2,", ",", ""))
+    assert_equal(st("1,2,3,3,3").split("3", 2), List[String]("1,2,", ",", ",3"))
+
+    assert_equal(st("Hello 🔥!").split(), List[String]("Hello", "🔥!"))
+
+    s2 = st("Лорем ипсум долор сит амет").split(" ")
+    assert_equal(s2, List[String]("Лорем", "ипсум", "долор", "сит", "амет"))
+    s3 = st("Лорем ипсум долор сит амет").split("м")
+    assert_equal(s3, List[String]("Лоре", " ипсу", " долор сит а", "ет"))
+
+    assert_equal(st("123").split(""), List[String]("", "1", "2", "3", ""))
+    assert_equal("".join(st("123").split("")), "123")
+    assert_equal(st(",1,2,3,").split(","), st("123").split(""))
+    assert_equal(",".join(st("123").split("")), ",1,2,3,")
 
 
 def test_splitlines():
diff --git a/stdlib/test/collections/test_string.mojo b/stdlib/test/collections/test_string.mojo
index 4d9151b279..b6e83ccc74 100644
--- a/stdlib/test/collections/test_string.mojo
+++ b/stdlib/test/collections/test_string.mojo
@@ -702,14 +702,8 @@ def test_rfind():
 
 
 def test_split():
-    # empty separators default to whitespace
-    var d = String("hello world").split()
-    assert_true(len(d) == 2)
-    assert_true(d[0] == "hello")
-    assert_true(d[1] == "world")
-    d = String("hello \t\n\n\v\fworld").split("\n")
-    assert_true(len(d) == 3)
-    assert_true(d[0] == "hello \t" and d[1] == "" and d[2] == "\v\fworld")
+    fn st(value: StringLiteral) -> String:
+        return value
 
     # Should add all whitespace-like chars as one
     # test all unicode separators
@@ -722,130 +716,73 @@ def test_split():
     """TODO: \\u2029"""
     # TODO add line and paragraph separator as StringLiteral once unicode
     # escape secuences are accepted
-    var univ_sep_var = (
-        String(" ")
-        + String("\t")
-        + String("\n")
-        + String("\r")
-        + String("\v")
-        + String("\f")
-        + String("\x1c")
-        + String("\x1d")
-        + String("\x1e")
+    univ_sep_var = (
+        st(" ")
+        + st("\t")
+        + st("\n")
+        + st("\r")
+        + st("\v")
+        + st("\f")
+        + st("\x1c")
+        + st("\x1d")
+        + st("\x1e")
         + String(next_line)
         + String(unicode_line_sep)
         + String(unicode_paragraph_sep)
     )
-    var s = univ_sep_var + "hello" + univ_sep_var + "world" + univ_sep_var
-    d = s.split()
-    assert_true(len(d) == 2)
-    assert_true(d[0] == "hello" and d[1] == "world")
+    s = univ_sep_var + "hello" + univ_sep_var + "world" + univ_sep_var
+    assert_equal(s.split(), List[String]("hello", "world"))
 
     # should split into empty strings between separators
-    d = String("1,,,3").split(",")
-    assert_true(len(d) == 4)
-    assert_true(d[0] == "1" and d[1] == "" and d[2] == "" and d[3] == "3")
-    d = String(",,,").split(",")
-    assert_true(len(d) == 4)
-    assert_true(d[0] == "" and d[1] == "" and d[2] == "" and d[3] == "")
-    d = String(" a b ").split(" ")
-    assert_true(len(d) == 4)
-    assert_true(d[0] == "" and d[1] == "a" and d[2] == "b" and d[3] == "")
-    d = String("abababaaba").split("aba")
-    assert_true(len(d) == 4)
-    assert_true(d[0] == "" and d[1] == "b" and d[2] == "" and d[3] == "")
+    assert_equal(st("1,,,3").split(","), List[String]("1", "", "", "3"))
+    assert_equal(st(",,,").split(","), List[String]("", "", "", ""))
+    assert_equal(st(" a b ").split(" "), List[String]("", "a", "b", ""))
+    assert_equal(st("abababaaba").split("aba"), List[String]("", "b", "", ""))
+    assert_true(len(st("").split()) == 0)
+    assert_true(len(st(" ").split()) == 0)
+    assert_true(len(st("").split(" ")) == 1)
+    assert_true(len(st(",").split(",")) == 2)
+    assert_true(len(st(" ").split(" ")) == 2)
+    assert_true(len(st("").split("")) == 2)
+    assert_true(len(st("  ").split(" ")) == 3)
+    assert_true(len(st("   ").split(" ")) == 4)
 
     # should split into maxsplit + 1 items
-    d = String("1,2,3").split(",", 0)
-    assert_true(len(d) == 1)
-    assert_true(d[0] == "1,2,3")
-    d = String("1,2,3").split(",", 1)
-    assert_true(len(d) == 2)
-    assert_true(d[0] == "1" and d[1] == "2,3")
-
-    assert_true(len(String("").split()) == 0)
-    assert_true(len(String(" ").split()) == 0)
-    assert_true(len(String("").split(" ")) == 1)
-    assert_true(len(String(" ").split(" ")) == 2)
-    assert_true(len(String("  ").split(" ")) == 3)
-    assert_true(len(String("   ").split(" ")) == 4)
-
-    with assert_raises():
-        _ = String("").split("")
+    assert_equal(st("1,2,3").split(",", 0), List[String]("1,2,3"))
+    assert_equal(st("1,2,3").split(",", 1), List[String]("1", "2,3"))
 
     # Split in middle
-    var d1 = String("n")
-    var in1 = String("faang")
-    var res1 = in1.split(d1)
-    assert_equal(len(res1), 2)
-    assert_equal(res1[0], "faa")
-    assert_equal(res1[1], "g")
-
-    # Matches should be properly split in multiple case
-    var d2 = String(" ")
-    var in2 = String("modcon is coming soon")
-    var res2 = in2.split(d2)
-    assert_equal(len(res2), 4)
-    assert_equal(res2[0], "modcon")
-    assert_equal(res2[1], "is")
-    assert_equal(res2[2], "coming")
-    assert_equal(res2[3], "soon")
+    assert_equal(st("faang").split(st("n")), List[String]("faa", "g"))
 
     # No match from the delimiter
-    var d3 = String("x")
-    var in3 = String("hello world")
-    var res3 = in3.split(d3)
-    assert_equal(len(res3), 1)
-    assert_equal(res3[0], "hello world")
+    assert_equal(st("hello world").split(st("x")), List[String]("hello world"))
 
     # Multiple character delimiter
-    var d4 = String("ll")
-    var in4 = String("hello")
-    var res4 = in4.split(d4)
-    assert_equal(len(res4), 2)
-    assert_equal(res4[0], "he")
-    assert_equal(res4[1], "o")
-
-    # related to #2879
-    # TODO: replace string comparison when __eq__ is implemented for List
-    assert_equal(
-        String("abbaaaabbba").split("a").__str__(),
-        "['', 'bb', '', '', '', 'bbb', '']",
-    )
-    assert_equal(
-        String("abbaaaabbba").split("a", 8).__str__(),
-        "['', 'bb', '', '', '', 'bbb', '']",
-    )
-    assert_equal(
-        String("abbaaaabbba").split("a", 5).__str__(),
-        "['', 'bb', '', '', '', 'bbba']",
-    )
-    assert_equal(String("aaa").split("a", 0).__str__(), "['aaa']")
-    assert_equal(String("a").split("a").__str__(), "['', '']")
-    assert_equal(String("1,2,3").split("3", 0).__str__(), "['1,2,3']")
-    assert_equal(String("1,2,3").split("3", 1).__str__(), "['1,2,', '']")
-    assert_equal(String("1,2,3,3").split("3", 2).__str__(), "['1,2,', ',', '']")
-    assert_equal(
-        String("1,2,3,3,3").split("3", 2).__str__(), "['1,2,', ',', ',3']"
-    )
-
-    var in5 = String("Hello 🔥!")
-    var res5 = in5.split()
-    assert_equal(len(res5), 2)
-    assert_equal(res5[0], "Hello")
-    assert_equal(res5[1], "🔥!")
-
-    var in6 = String("Лорем ипсум долор сит амет")
-    var res6 = in6.split(" ")
-    assert_equal(len(res6), 5)
-    assert_equal(res6[0], "Лорем")
-    assert_equal(res6[1], "ипсум")
-    assert_equal(res6[2], "долор")
-    assert_equal(res6[3], "сит")
-    assert_equal(res6[4], "амет")
-
-    with assert_raises(contains="Separator cannot be empty."):
-        _ = String("1, 2, 3").split("")
+    assert_equal(st("hello").split(st("ll")), List[String]("he", "o"))
+
+    res = List[String]("", "bb", "", "", "", "bbb", "")
+    assert_equal(st("abbaaaabbba").split("a"), res)
+    assert_equal(st("abbaaaabbba").split("a", 8), res)
+    s1 = st("abbaaaabbba").split("a", 5)
+    assert_equal(s1, List[String]("", "bb", "", "", "", "bbba"))
+    assert_equal(st("aaa").split("a", 0), List[String]("aaa"))
+    assert_equal(st("a").split("a"), List[String]("", ""))
+    assert_equal(st("1,2,3").split("3", 0), List[String]("1,2,3"))
+    assert_equal(st("1,2,3").split("3", 1), List[String]("1,2,", ""))
+    assert_equal(st("1,2,3,3").split("3", 2), List[String]("1,2,", ",", ""))
+    assert_equal(st("1,2,3,3,3").split("3", 2), List[String]("1,2,", ",", ",3"))
+
+    assert_equal(st("Hello 🔥!").split(), List[String]("Hello", "🔥!"))
+
+    s2 = st("Лорем ипсум долор сит амет").split(" ")
+    assert_equal(s2, List[String]("Лорем", "ипсум", "долор", "сит", "амет"))
+    s3 = st("Лорем ипсум долор сит амет").split("м")
+    assert_equal(s3, List[String]("Лоре", " ипсу", " долор сит а", "ет"))
+
+    assert_equal(st("123").split(""), List[String]("", "1", "2", "3", ""))
+    assert_equal("".join(st("123").split("")), "123")
+    assert_equal(st(",1,2,3,").split(","), st("123").split(""))
+    assert_equal(",".join(st("123").split("")), ",1,2,3,")
 
 
 def test_splitlines():