| // Copyright (c) 2011, the Dart project authors. Please see the AUTHORS file |
| // for details. All rights reserved. Use of this source code is governed by a |
| // BSD-style license that can be found in the LICENSE file. |
| |
| // @dart = 2.9 |
| |
| import "package:expect/expect.dart"; |
| |
| void main() { |
| testOutOfRange(); |
| testConcat(); |
| testIndex(); |
| testCodeUnitAt(); |
| testEquals(); |
| testEndsWith(); |
| testStartsWith(); |
| testIndexOf(); |
| testLastIndexOf(); |
| testContains(); |
| testReplaceAll(); |
| testCompareTo(); |
| testCharCodes(); |
| testRepeat(); |
| testPadLeft(); |
| testPadRight(); |
| } |
| |
| void testLength() { |
| String str = ""; |
| for (var i = 0; i < 20; i++) { |
| testStringLength(i, str); |
| str += " "; |
| } |
| } |
| |
| void testOutOfRange() { |
| String a = "Hello"; |
| bool exception_caught = false; |
| try { |
| var c = a[20]; // Throw exception. |
| } on RangeError catch (e) { |
| exception_caught = true; |
| } |
| Expect.isTrue(exception_caught); |
| } |
| |
| void testIndex() { |
| String str = "string"; |
| for (int i = 0; i < str.length; i++) { |
| Expect.isTrue(str[i] is String); |
| testStringLength(1, str[i]); |
| } |
| } |
| |
| void testCodeUnitAt() { |
| String str = "string"; |
| for (int i = 0; i < str.length; i++) { |
| Expect.isTrue(str.codeUnitAt(i) is int); |
| } |
| } |
| |
| void testConcat() { |
| var a = "One"; |
| var b = "Four"; |
| var c = a + b; |
| testStringLength(7, c); |
| Expect.equals("OneFour", c); |
| } |
| |
| void testEquals() { |
| Expect.equals("str", "str"); |
| |
| Expect.equals("str", "s" + "t" + "r"); |
| Expect.equals("s" + "t" + "r", "str"); |
| |
| Expect.isFalse("str" == "s"); |
| Expect.isFalse("str" == "r"); |
| Expect.isFalse("str" == "st"); |
| Expect.isFalse("str" == "tr"); |
| |
| Expect.isFalse("s" == "str"); |
| Expect.isFalse("r" == "str"); |
| Expect.isFalse("st" == "str"); |
| Expect.isFalse("tr" == "str"); |
| |
| Expect.isFalse("" == "s"); |
| Expect.equals("", ""); |
| } |
| |
| void testEndsWith() { |
| Expect.isTrue("str".endsWith("r")); |
| Expect.isTrue("str".endsWith("tr")); |
| Expect.isTrue("str".endsWith("str")); |
| |
| Expect.isFalse("str".endsWith("stri")); |
| Expect.isFalse("str".endsWith("t")); |
| Expect.isFalse("str".endsWith("st")); |
| Expect.isFalse("str".endsWith("s")); |
| |
| Expect.isTrue("".endsWith("")); |
| Expect.isFalse("".endsWith("s")); |
| } |
| |
| void testStartsWith() { |
| Expect.isTrue("str".startsWith("s")); |
| Expect.isTrue("str".startsWith("st")); |
| Expect.isTrue("str".startsWith("str")); |
| |
| Expect.isFalse("str".startsWith("stri")); |
| Expect.isFalse("str".startsWith("r")); |
| Expect.isFalse("str".startsWith("tr")); |
| Expect.isFalse("str".startsWith("t")); |
| |
| Expect.isTrue("".startsWith("")); |
| Expect.isFalse("".startsWith("s")); |
| |
| Expect.isFalse("strstr".startsWith("s", 1)); |
| Expect.isFalse("strstr".startsWith("s", 2)); |
| Expect.isTrue("strstr".startsWith("s", 3)); |
| Expect.isFalse("strstr".startsWith("s", 4)); |
| |
| Expect.isFalse("strstr".startsWith("st", 1)); |
| Expect.isFalse("strstr".startsWith("st", 2)); |
| Expect.isTrue("strstr".startsWith("st", 3)); |
| Expect.isFalse("strstr".startsWith("st", 4)); |
| |
| Expect.isFalse("strstr".startsWith("str", 1)); |
| Expect.isFalse("strstr".startsWith("str", 2)); |
| Expect.isTrue("strstr".startsWith("str", 3)); |
| Expect.isFalse("strstr".startsWith("str", 4)); |
| |
| Expect.isTrue("str".startsWith("", 0)); |
| Expect.isTrue("str".startsWith("", 1)); |
| Expect.isTrue("str".startsWith("", 2)); |
| Expect.isTrue("str".startsWith("", 3)); |
| |
| Expect.throws(() => "str".startsWith("", -1)); |
| Expect.throws(() => "str".startsWith("", 4)); |
| |
| var regexp = new RegExp("s(?:tr?)?"); |
| Expect.isTrue("s".startsWith(regexp)); |
| Expect.isTrue("st".startsWith(regexp)); |
| Expect.isTrue("str".startsWith(regexp)); |
| Expect.isTrue("sX".startsWith(regexp)); |
| Expect.isTrue("stX".startsWith(regexp)); |
| Expect.isTrue("strX".startsWith(regexp)); |
| |
| Expect.isFalse("".startsWith(regexp)); |
| Expect.isFalse("astr".startsWith(regexp)); |
| |
| Expect.isTrue("".startsWith(new RegExp(""))); |
| Expect.isTrue("".startsWith(new RegExp("a?"))); |
| |
| Expect.isFalse("strstr".startsWith(regexp, 1)); |
| Expect.isFalse("strstr".startsWith(regexp, 2)); |
| Expect.isTrue("strstr".startsWith(regexp, 3)); |
| Expect.isFalse("strstr".startsWith(regexp, 4)); |
| |
| Expect.isTrue("str".startsWith(new RegExp(""), 0)); |
| Expect.isTrue("str".startsWith(new RegExp(""), 1)); |
| Expect.isTrue("str".startsWith(new RegExp(""), 2)); |
| Expect.isTrue("str".startsWith(new RegExp(""), 3)); |
| Expect.isTrue("str".startsWith(new RegExp("a?"), 0)); |
| Expect.isTrue("str".startsWith(new RegExp("a?"), 1)); |
| Expect.isTrue("str".startsWith(new RegExp("a?"), 2)); |
| Expect.isTrue("str".startsWith(new RegExp("a?"), 3)); |
| |
| Expect.throws(() => "str".startsWith(regexp, -1)); |
| Expect.throws(() => "str".startsWith(regexp, 4)); |
| |
| regexp = new RegExp("^str"); |
| Expect.isTrue("strstr".startsWith(regexp)); |
| Expect.isTrue("strstr".startsWith(regexp, 0)); |
| Expect.isFalse("strstr".startsWith(regexp, 1)); |
| Expect.isFalse("strstr".startsWith(regexp, 2)); |
| Expect.isFalse("strstr".startsWith(regexp, 3)); // Second "str" isn't at ^. |
| } |
| |
| void testIndexOf() { |
| Expect.equals(0, "str".indexOf("", 0)); |
| Expect.equals(0, "".indexOf("", 0)); |
| Expect.equals(-1, "".indexOf("a", 0)); |
| |
| Expect.equals(1, "str".indexOf("t", 0)); |
| Expect.equals(1, "str".indexOf("tr", 0)); |
| Expect.equals(0, "str".indexOf("str", 0)); |
| Expect.equals(0, "str".indexOf("st", 0)); |
| Expect.equals(0, "str".indexOf("s", 0)); |
| Expect.equals(2, "str".indexOf("r", 0)); |
| Expect.equals(-1, "str".indexOf("string", 0)); |
| |
| Expect.equals(1, "strstr".indexOf("t", 0)); |
| Expect.equals(1, "strstr".indexOf("tr", 0)); |
| Expect.equals(0, "strstr".indexOf("str", 0)); |
| Expect.equals(0, "strstr".indexOf("st", 0)); |
| Expect.equals(0, "strstr".indexOf("s", 0)); |
| Expect.equals(2, "strstr".indexOf("r", 0)); |
| Expect.equals(-1, "str".indexOf("string", 0)); |
| |
| Expect.equals(4, "strstr".indexOf("t", 2)); |
| Expect.equals(4, "strstr".indexOf("tr", 2)); |
| Expect.equals(3, "strstr".indexOf("str", 1)); |
| Expect.equals(3, "strstr".indexOf("str", 2)); |
| Expect.equals(3, "strstr".indexOf("str", 3)); |
| Expect.equals(3, "strstr".indexOf("st", 1)); |
| Expect.equals(3, "strstr".indexOf("s", 3)); |
| Expect.equals(5, "strstr".indexOf("r", 3)); |
| Expect.equals(5, "strstr".indexOf("r", 4)); |
| Expect.equals(5, "strstr".indexOf("r", 5)); |
| |
| String str = "hello"; |
| for (int i = 0; i < 10; i++) { |
| if (i > str.length) { |
| Expect.throws(() => str.indexOf("", i)); |
| } else { |
| int result = str.indexOf("", i); |
| Expect.equals(i, result); |
| } |
| } |
| |
| var re = new RegExp("an?"); |
| Expect.equals(1, "banana".indexOf(re)); |
| Expect.equals(1, "banana".indexOf(re, 0)); |
| Expect.equals(1, "banana".indexOf(re, 1)); |
| Expect.equals(3, "banana".indexOf(re, 2)); |
| Expect.equals(3, "banana".indexOf(re, 3)); |
| Expect.equals(5, "banana".indexOf(re, 4)); |
| Expect.equals(5, "banana".indexOf(re, 5)); |
| Expect.equals(-1, "banana".indexOf(re, 6)); |
| Expect.throws(() => "banana".indexOf(re, -1)); |
| Expect.throws(() => "banana".indexOf(re, 7)); |
| re = new RegExp("x?"); |
| for (int i = 0; i <= str.length; i++) { |
| Expect.equals(i, str.indexOf(re, i)); |
| } |
| } |
| |
| void testLastIndexOf() { |
| Expect.equals(2, "str".lastIndexOf("", 2)); |
| Expect.equals(0, "".lastIndexOf("", 0)); |
| Expect.equals(-1, "".lastIndexOf("a", 0)); |
| |
| Expect.equals(1, "str".lastIndexOf("t", 2)); |
| Expect.equals(1, "str".lastIndexOf("tr", 2)); |
| Expect.equals(0, "str".lastIndexOf("str", 2)); |
| Expect.equals(0, "str".lastIndexOf("st", 2)); |
| Expect.equals(0, "str".lastIndexOf("s", 2)); |
| Expect.equals(2, "str".lastIndexOf("r", 2)); |
| Expect.equals(-1, "str".lastIndexOf("string", 2)); |
| |
| Expect.equals(4, "strstr".lastIndexOf("t", 5)); |
| Expect.equals(4, "strstr".lastIndexOf("tr", 5)); |
| Expect.equals(3, "strstr".lastIndexOf("str", 5)); |
| Expect.equals(3, "strstr".lastIndexOf("st", 5)); |
| Expect.equals(3, "strstr".lastIndexOf("s", 5)); |
| Expect.equals(5, "strstr".lastIndexOf("r", 5)); |
| Expect.throws(() { |
| "str".lastIndexOf("string", 5); |
| }); |
| Expect.equals(4, "strstr".lastIndexOf("t", 5)); |
| Expect.equals(4, "strstr".lastIndexOf("tr", 5)); |
| Expect.equals(3, "strstr".lastIndexOf("str", 5)); |
| Expect.equals(3, "strstr".lastIndexOf("str", 5)); |
| Expect.equals(3, "strstr".lastIndexOf("str", 5)); |
| Expect.equals(3, "strstr".lastIndexOf("st", 5)); |
| Expect.equals(3, "strstr".lastIndexOf("s", 5)); |
| Expect.equals(5, "strstr".lastIndexOf("r", 5)); |
| Expect.equals(2, "strstr".lastIndexOf("r", 4)); |
| Expect.equals(2, "strstr".lastIndexOf("r", 3)); |
| Expect.equals(5, "strstr".lastIndexOf("r")); |
| Expect.equals(5, "strstr".lastIndexOf("r", null)); |
| |
| String str = "hello"; |
| for (int i = 0; i < 10; i++) { |
| if (i > str.length) { |
| Expect.throws(() => str.indexOf("", i)); |
| } else { |
| int result = str.lastIndexOf("", i); |
| Expect.equals(i, result); |
| } |
| } |
| |
| var re = new RegExp("an?"); |
| Expect.equals(5, "banana".lastIndexOf(re)); |
| Expect.equals(5, "banana".lastIndexOf(re, 6)); |
| Expect.equals(5, "banana".lastIndexOf(re, 5)); |
| Expect.equals(3, "banana".lastIndexOf(re, 4)); |
| Expect.equals(3, "banana".lastIndexOf(re, 3)); |
| Expect.equals(1, "banana".lastIndexOf(re, 2)); |
| Expect.equals(1, "banana".lastIndexOf(re, 1)); |
| Expect.equals(-1, "banana".lastIndexOf(re, 0)); |
| Expect.throws(() => "banana".lastIndexOf(re, -1)); |
| Expect.throws(() => "banana".lastIndexOf(re, 7)); |
| re = new RegExp("x?"); |
| for (int i = 0; i <= str.length; i++) { |
| Expect.equals(i, str.indexOf(re, i)); |
| } |
| } |
| |
| void testContains() { |
| Expect.isTrue("str".contains("s", 0)); |
| Expect.isTrue("str".contains("st", 0)); |
| Expect.isTrue("str".contains("str", 0)); |
| Expect.isTrue("str".contains("t", 0)); |
| Expect.isTrue("str".contains("r", 0)); |
| Expect.isTrue("str".contains("tr", 0)); |
| |
| Expect.isFalse("str".contains("sr", 0)); |
| Expect.isFalse("str".contains("string", 0)); |
| |
| Expect.isTrue("str".contains("", 0)); |
| Expect.isTrue("".contains("", 0)); |
| Expect.isFalse("".contains("s", 0)); |
| } |
| |
| void testReplaceAll() { |
| Expect.equals("AtoBtoCDtoE", "AfromBfromCDfromE".replaceAll("from", "to")); |
| |
| // Test with the replaced string at the beginning. |
| Expect.equals("toABtoCDtoE", "fromABfromCDfromE".replaceAll("from", "to")); |
| |
| // Test with the replaced string at the end. |
| Expect.equals( |
| "toABtoCDtoEto", "fromABfromCDfromEfrom".replaceAll("from", "to")); |
| |
| // Test when there are no occurrence of the string to replace. |
| Expect.equals("ABC", "ABC".replaceAll("from", "to")); |
| |
| // Test when the string to change is the empty string. |
| Expect.equals("", "".replaceAll("from", "to")); |
| |
| // Test when the string to change is a substring of the string to |
| // replace. |
| Expect.equals("fro", "fro".replaceAll("from", "to")); |
| |
| // Test when the string to change is the replaced string. |
| Expect.equals("to", "from".replaceAll("from", "to")); |
| |
| // Test when the string to change is the replacement string. |
| Expect.equals("to", "to".replaceAll("from", "to")); |
| |
| // Test replacing by the empty string. |
| Expect.equals("", "from".replaceAll("from", "")); |
| Expect.equals("AB", "AfromB".replaceAll("from", "")); |
| |
| // Test changing the empty string. |
| Expect.equals("to", "".replaceAll("", "to")); |
| |
| // Test replacing the empty string. |
| Expect.equals("toAtoBtoCto", "ABC".replaceAll("", "to")); |
| } |
| |
| void testCompareTo() { |
| Expect.equals(0, "".compareTo("")); |
| Expect.equals(0, "str".compareTo("str")); |
| Expect.equals(-1, "str".compareTo("string")); |
| Expect.equals(1, "string".compareTo("str")); |
| Expect.equals(1, "string".compareTo("")); |
| Expect.equals(-1, "".compareTo("string")); |
| } |
| |
| void testCharCodes() { |
| test(str) { |
| var list = str.codeUnits; |
| Expect.equals(str.length, list.length); |
| for (int i = 0; i < str.length; i++) { |
| Expect.equals(str.codeUnitAt(i), list[i]); |
| } |
| } |
| |
| test("abc"); |
| test(""); |
| test(" "); |
| } |
| |
| void testStringLength(int length, String str) { |
| Expect.equals(length, str.length); |
| (length == 0 ? Expect.isTrue : Expect.isFalse)(str.isEmpty); |
| (length != 0 ? Expect.isTrue : Expect.isFalse)(str.isNotEmpty); |
| } |
| |
| void testRepeat() { |
| List<String> testStrings = [ |
| "", |
| "\x00", |
| "a", |
| "ab", |
| "\x80", |
| "\xff", |
| "\u2028", |
| "abcdef\u2028", |
| "\u{10002}", |
| "abcdef\u{10002}" |
| ]; |
| List<int> counts = [ |
| 0, |
| 1, |
| 2, |
| 3, |
| 4, |
| 5, |
| 6, |
| 7, |
| 8, |
| 9, |
| 10, |
| 11, |
| 12, |
| 13, |
| 14, |
| 15, |
| 16, |
| 17, |
| 127, |
| 128, |
| 129 |
| ]; |
| void testRepeat(str, repeat) { |
| String expect; |
| if (repeat <= 0) { |
| expect = ""; |
| } else if (repeat == 1) { |
| expect = str; |
| } else { |
| StringBuffer buf = new StringBuffer(); |
| for (int i = 0; i < repeat; i++) { |
| buf.write(str); |
| } |
| expect = buf.toString(); |
| } |
| String actual = str * repeat; |
| Expect.equals(expect, actual, "$str#${str.length} * $repeat"); |
| } |
| |
| for (String str in testStrings) { |
| for (int repeat in counts) { |
| testRepeat(str, repeat); |
| } |
| } |
| } |
| |
| void testPadLeft() { |
| Expect.equals(" 1", "1".padLeft(5, ' ')); |
| Expect.equals(" 11", "11".padLeft(5, ' ')); |
| Expect.equals(" 111", "111".padLeft(5, ' ')); |
| Expect.equals(" 1111", "1111".padLeft(5, ' ')); |
| Expect.equals("11111", "11111".padLeft(5, ' ')); |
| Expect.equals("111111", "111111".padLeft(5, ' ')); |
| Expect.equals(" \u{10002}", "\u{10002}".padLeft(5, ' ')); |
| Expect.equals('', ''.padLeft(0, 'a')); |
| Expect.equals('a', ''.padLeft(1, 'a')); |
| Expect.equals('aaaaa', ''.padLeft(5, 'a')); |
| Expect.equals('', ''.padLeft(-2, 'a')); |
| |
| Expect.equals('xyzxyzxyzxyzxyz', ''.padLeft(5, 'xyz')); |
| Expect.equals('xyzxyzxyzxyza', 'a'.padLeft(5, 'xyz')); |
| Expect.equals('xyzxyzxyzaa', 'aa'.padLeft(5, 'xyz')); |
| Expect.equals('\u{10002}\u{10002}\u{10002}aa', 'aa'.padLeft(5, '\u{10002}')); |
| Expect.equals('a', 'a'.padLeft(10, '')); |
| } |
| |
| void testPadRight() { |
| Expect.equals("1 ", "1".padRight(5, ' ')); |
| Expect.equals("11 ", "11".padRight(5, ' ')); |
| Expect.equals("111 ", "111".padRight(5, ' ')); |
| Expect.equals("1111 ", "1111".padRight(5, ' ')); |
| Expect.equals("11111", "11111".padRight(5, ' ')); |
| Expect.equals("111111", "111111".padRight(5, ' ')); |
| Expect.equals("\u{10002} ", "\u{10002}".padRight(5, ' ')); |
| Expect.equals('', ''.padRight(0, 'a')); |
| Expect.equals('a', ''.padRight(1, 'a')); |
| Expect.equals('aaaaa', ''.padRight(5, 'a')); |
| Expect.equals('', ''.padRight(-2, 'a')); |
| |
| Expect.equals('xyzxyzxyzxyzxyz', ''.padRight(5, 'xyz')); |
| Expect.equals('axyzxyzxyzxyz', 'a'.padRight(5, 'xyz')); |
| Expect.equals('aaxyzxyzxyz', 'aa'.padRight(5, 'xyz')); |
| Expect.equals('aa\u{10002}\u{10002}\u{10002}', 'aa'.padRight(5, '\u{10002}')); |
| Expect.equals('a', 'a'.padRight(10, '')); |
| } |