| // 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"; |
| |
| main() { |
| // Test replaceFirst. |
| Expect.equals("AtoBtoCDtoE", "AfromBtoCDtoE".replaceFirst("from", "to")); |
| |
| // Test with the replaced string at the beginning. |
| Expect.equals("toABtoCDtoE", "fromABtoCDtoE".replaceFirst("from", "to")); |
| |
| // Test with the replaced string at the end. |
| Expect.equals("toABtoCDtoEto", "fromABtoCDtoEto".replaceFirst("from", "to")); |
| |
| // Test when there are no occurrence of the string to replace. |
| Expect.equals("ABC", "ABC".replaceFirst("from", "to")); |
| |
| // Test when the string to change is the empty string. |
| Expect.equals("", "".replaceFirst("from", "to")); |
| |
| // Test when the string to change is a substring of the string to |
| // replace. |
| Expect.equals("fro", "fro".replaceFirst("from", "to")); |
| |
| // Test when the string to change is the replaced string. |
| Expect.equals("to", "from".replaceFirst("from", "to")); |
| |
| // Test when the string to change is the replacement string. |
| Expect.equals("to", "to".replaceFirst("from", "to")); |
| |
| // Test replacing by the empty string. |
| Expect.equals("", "from".replaceFirst("from", "")); |
| Expect.equals("AB", "AfromB".replaceFirst("from", "")); |
| |
| // Test changing the empty string. |
| Expect.equals("to", "".replaceFirst("", "to")); |
| |
| // Test replacing the empty string. |
| Expect.equals("toAtoBtoCto", "AtoBtoCto".replaceFirst("", "to")); |
| |
| // Test startIndex. |
| Expect.equals( |
| "foo-AAA-foo-bar", "foo-bar-foo-bar".replaceFirst("bar", "AAA", 4)); |
| |
| // Test startIndex skipping one case at the beginning. |
| Expect.equals( |
| "foo-bar-AAA-bar", "foo-bar-foo-bar".replaceFirst("foo", "AAA", 1)); |
| |
| // Test startIndex skipping one case at the beginning. |
| Expect.equals( |
| "foo-bar-foo-AAA", "foo-bar-foo-bar".replaceFirst("bar", "AAA", 5)); |
| |
| // Test startIndex replacing with the empty string. |
| Expect.equals("foo-bar--bar", "foo-bar-foo-bar".replaceFirst("foo", "", 1)); |
| |
| // Test startIndex with a RegExp with carat |
| Expect.equals("foo-bar-foo-bar", |
| "foo-bar-foo-bar".replaceFirst(new RegExp(r"^foo"), "", 8)); |
| |
| // Test startIndex with a RegExp |
| Expect.equals( |
| "aaa{3}X{3}", "aaa{3}aaa{3}".replaceFirst(new RegExp(r"a{3}"), "X", 1)); |
| |
| // Test startIndex with regexp-looking String |
| Expect.equals("aaa{3}aaX", "aaa{3}aaa{3}".replaceFirst("a{3}", "X", 3)); |
| |
| // Test negative startIndex |
| Expect.throwsRangeError(() => "hello".replaceFirst("h", "X", -1)); |
| |
| // Test startIndex too large |
| Expect.throwsRangeError(() => "hello".replaceFirst("h", "X", 6)); |
| |
| // Test null startIndex |
| Expect.throwsArgumentError(() => "hello".replaceFirst("h", "X", null)); |
| |
| // Test replaceFirstMapped. |
| Expect.equals( |
| "AtoBtoCDtoE", "AfromBtoCDtoE".replaceFirstMapped("from", (_) => "to")); |
| |
| // Test with the replaced string at the beginning. |
| Expect.equals( |
| "toABtoCDtoE", "fromABtoCDtoE".replaceFirstMapped("from", (_) => "to")); |
| |
| // Test with the replaced string at the end. |
| Expect.equals("toABtoCDtoEto", |
| "fromABtoCDtoEto".replaceFirstMapped("from", (_) => "to")); |
| |
| // Test when there are no occurrence of the string to replace. |
| Expect.equals("ABC", "ABC".replaceFirstMapped("from", (_) => "to")); |
| |
| // Test when the string to change is the empty string. |
| Expect.equals("", "".replaceFirstMapped("from", (_) => "to")); |
| |
| // Test when the string to change is a substring of the string to |
| // replace. |
| Expect.equals("fro", "fro".replaceFirstMapped("from", (_) => "to")); |
| |
| // Test when the string to change is the replaced string. |
| Expect.equals("to", "from".replaceFirstMapped("from", (_) => "to")); |
| |
| // Test when the string to change is the replacement string. |
| Expect.equals("to", "to".replaceFirstMapped("from", (_) => "to")); |
| |
| // Test replacing by the empty string. |
| Expect.equals("", "from".replaceFirstMapped("from", (_) => "")); |
| Expect.equals("AB", "AfromB".replaceFirstMapped("from", (_) => "")); |
| |
| // Test changing the empty string. |
| Expect.equals("to", "".replaceFirstMapped("", (_) => "to")); |
| |
| // Test replacing the empty string. |
| Expect.equals("toAtoBtoCto", "AtoBtoCto".replaceFirstMapped("", (_) => "to")); |
| |
| // Test startIndex. |
| Expect.equals("foo-AAA-foo-bar", |
| "foo-bar-foo-bar".replaceFirstMapped("bar", (_) => "AAA", 4)); |
| |
| // Test startIndex skipping one case at the beginning. |
| Expect.equals("foo-bar-AAA-bar", |
| "foo-bar-foo-bar".replaceFirstMapped("foo", (_) => "AAA", 1)); |
| |
| // Test startIndex skipping one case at the beginning. |
| Expect.equals("foo-bar-foo-AAA", |
| "foo-bar-foo-bar".replaceFirstMapped("bar", (_) => "AAA", 5)); |
| |
| // Test startIndex replacing with the empty string. |
| Expect.equals("foo-bar--bar", |
| "foo-bar-foo-bar".replaceFirstMapped("foo", (_) => "", 1)); |
| |
| // Test startIndex with a RegExp with carat |
| Expect.equals("foo-bar-foo-bar", |
| "foo-bar-foo-bar".replaceFirstMapped(new RegExp(r"^foo"), (_) => "", 8)); |
| |
| // Test startIndex with a RegExp |
| Expect.equals("aaa{3}X{3}", |
| "aaa{3}aaa{3}".replaceFirstMapped(new RegExp(r"a{3}"), (_) => "X", 1)); |
| |
| // Test startIndex with regexp-looking String |
| Expect.equals( |
| "aaa{3}aaX", "aaa{3}aaa{3}".replaceFirstMapped("a{3}", (_) => "X", 3)); |
| |
| // Test negative startIndex |
| Expect.throwsRangeError( |
| () => "hello".replaceFirstMapped("h", (_) => "X", -1)); |
| |
| // Test startIndex too large |
| Expect.throwsRangeError(() => "hello".replaceFirstMapped("h", (_) => "X", 6)); |
| |
| // Test null startIndex |
| Expect.throwsArgumentError( |
| () => "hello".replaceFirstMapped("h", (_) => "X", null)); |
| |
| // Test replacement depending on argument. |
| Expect.equals("foo-BAR-foo-bar", |
| "foo-bar-foo-bar".replaceFirstMapped("bar", (v) => v[0].toUpperCase())); |
| |
| Expect.equals("foo-[bar]-foo-bar", |
| "foo-bar-foo-bar".replaceFirstMapped("bar", (v) => "[${v[0]}]")); |
| |
| Expect.equals("foo-foo-bar-foo-bar-foo-bar", |
| "foo-bar-foo-bar".replaceFirstMapped("bar", (v) => v.input)); |
| |
| // Test replacement throwing. |
| Expect.throws(() => "foo-bar".replaceFirstMapped("bar", (v) => throw 42), |
| (e) => e == 42); |
| |
| // Test replacement returning non-String. |
| var o = new Object(); |
| Expect.equals( |
| "foo-$o", |
| "foo-bar".replaceFirstMapped("bar", (v) { |
| // TODO(jmesserly): in strong mode, this function must return a string. |
| // If we want to allow any Object, we'll have to fix the API signature. |
| // See https://github.com/dart-lang/sdk/issues/30248. |
| return '$o'; |
| })); |
| |
| for (var string in ["", "x", "foo", "x\u2000z"]) { |
| for (var replacement in ["", "foo", string]) { |
| for (int start = 0; start <= string.length; start++) { |
| var expect; |
| for (int end = start; end <= string.length; end++) { |
| expect = |
| string.substring(0, start) + replacement + string.substring(end); |
| Expect.equals(expect, string.replaceRange(start, end, replacement), |
| '"$string"[$start:$end]="$replacement"'); |
| } |
| // Reuse expect from "end == string.length" case when omitting end. |
| Expect.equals(expect, string.replaceRange(start, null, replacement), |
| '"$string"[$start:]="$replacement"'); |
| } |
| } |
| Expect.throws(() => string.replaceRange(0, 0, null)); |
| Expect.throws(() => string.replaceRange(-1, 0, "x")); |
| Expect.throws(() => string.replaceRange(0, string.length + 1, "x")); |
| } |
| } |