| // 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. |
| |
| import "package:expect/expect.dart"; |
| |
| // TODO(srdjan): Move StringBuffer to visible names. |
| |
| void testConstructor() { |
| StringBuffer bf = new StringBuffer(""); |
| testBufferLength(0, bf); |
| |
| bf = new StringBuffer("abc"); |
| testBufferLength(3, bf); |
| Expect.equals("abc", bf.toString()); |
| |
| bf = new StringBuffer("\x00"); |
| } |
| |
| void testWrite() { |
| StringBuffer bf = new StringBuffer(""); |
| Expect.equals(true, bf.isEmpty); |
| |
| bf.write("a"); |
| testBufferLength(1, bf); |
| Expect.equals("a", bf.toString()); |
| |
| bf = new StringBuffer(""); |
| bf.write("a"); |
| bf.write("b"); |
| Expect.equals("ab", bf.toString()); |
| |
| bf = new StringBuffer("abc"); |
| bf.write("d"); |
| bf.write("e"); |
| bf.write("f"); |
| bf.write("g"); |
| bf.write("h"); |
| bf.write("i"); |
| bf.write("j"); |
| bf.write("k"); |
| bf.write("l"); |
| bf.write("m"); |
| bf.write("n"); |
| bf.write("o"); |
| bf.write("p"); |
| bf.write("q"); |
| bf.write("r"); |
| bf.write("s"); |
| bf.write("t"); |
| bf.write("u"); |
| bf.write("v"); |
| bf.write("w"); |
| bf.write("x"); |
| bf.write("y"); |
| bf.write("z"); |
| bf.write("\n"); |
| bf.write("thequickbrownfoxjumpsoverthelazydog"); |
| Expect.equals( |
| "abcdefghijklmnopqrstuvwxyz\n" |
| "thequickbrownfoxjumpsoverthelazydog", |
| bf.toString()); |
| |
| bf = new StringBuffer(""); |
| for (int i = 0; i < 100000; i++) { |
| bf.write(''); |
| bf.write(""); |
| } |
| Expect.equals("", bf.toString()); |
| } |
| |
| void testLength() { |
| StringBuffer bf = new StringBuffer(""); |
| testBufferLength(0, bf); |
| bf.write("foo"); |
| testBufferLength(3, bf); |
| bf.write("bar"); |
| testBufferLength(6, bf); |
| bf.write(""); |
| testBufferLength(6, bf); |
| } |
| |
| void testIsEmpty() { |
| StringBuffer bf = new StringBuffer(""); |
| Expect.equals(true, bf.isEmpty); |
| bf.write("foo"); |
| Expect.equals(false, bf.isEmpty); |
| } |
| |
| void testWriteAll() { |
| StringBuffer bf = new StringBuffer(""); |
| bf.writeAll(["foo", "bar", "a", "b", "c"]); |
| Expect.equals("foobarabc", bf.toString()); |
| |
| bf.writeAll([]); |
| Expect.equals("foobarabc", bf.toString()); |
| |
| bf.writeAll(["", "", ""]); |
| Expect.equals("foobarabc", bf.toString()); |
| |
| bf.writeAll(["", "", ""], ""); |
| Expect.equals("foobarabc", bf.toString()); |
| |
| StringBuffer bf2 = new StringBuffer(""); |
| bf2.writeAll([], "s"); |
| Expect.equals("", bf2.toString()); |
| |
| StringBuffer bf3 = new StringBuffer(""); |
| bf3.writeAll(["a"], "s"); |
| Expect.equals("a", bf3.toString()); |
| |
| StringBuffer bf4 = new StringBuffer(""); |
| bf4.writeAll(["a", "b"], "s"); |
| Expect.equals("asb", bf4.toString()); |
| } |
| |
| void testWriteAll2() { |
| // Passing `null` for separator is an error that is checked when the iterable |
| // is not empty. This is not specified in the documentation but we want |
| // implementations to be consistent. |
| StringBuffer bf1 = new StringBuffer(""); |
| bf1.writeAll([], null); |
| Expect.equals("", bf1.toString()); |
| |
| StringBuffer bf2 = new StringBuffer(""); |
| Expect.throws(() { |
| bf2.writeAll([1], null); |
| }); |
| } |
| |
| void testWriteln() { |
| StringBuffer bf1 = new StringBuffer(""); |
| bf1.writeln("Hello"); |
| Expect.equals("Hello\n", bf1.toString()); |
| |
| StringBuffer bf2 = new StringBuffer(""); |
| bf2.writeln(); |
| Expect.equals("\n", bf2.toString()); |
| |
| StringBuffer bf3 = new StringBuffer(""); |
| bf3.writeln("\n"); |
| bf3.writeln(null); |
| bf3.writeln(1); |
| Expect.equals("\n\nnull\n1\n", bf3.toString()); |
| } |
| |
| void testClear() { |
| StringBuffer bf = new StringBuffer(""); |
| bf.write("foo"); |
| bf.clear(); |
| Expect.equals("", bf.toString()); |
| testBufferLength(0, bf); |
| |
| bf.write("bar"); |
| Expect.equals("bar", bf.toString()); |
| testBufferLength(3, bf); |
| bf.clear(); |
| Expect.equals("", bf.toString()); |
| testBufferLength(0, bf); |
| } |
| |
| void testToString() { |
| StringBuffer bf = new StringBuffer(""); |
| Expect.equals("", bf.toString()); |
| |
| bf = new StringBuffer("foo"); |
| Expect.equals("foo", bf.toString()); |
| |
| bf = new StringBuffer("foo"); |
| bf.write("bar"); |
| Expect.equals("foobar", bf.toString()); |
| } |
| |
| void testChaining() { |
| StringBuffer bf = new StringBuffer(""); |
| StringBuffer bf2 = new StringBuffer(""); |
| bf2.write("bf2"); |
| bf..write("foo")..write("bar")..write(bf2)..write(bf2)..write("toto"); |
| Expect.equals("foobarbf2bf2toto", bf.toString()); |
| } |
| |
| void testWriteCharCode() { |
| StringBuffer bf1 = new StringBuffer(); |
| StringBuffer bf2 = new StringBuffer(); |
| bf1.write("a"); |
| bf2.writeCharCode(0x61); // a |
| bf1.write("b"); |
| bf2.writeCharCode(0x62); // b |
| bf1.write("c"); |
| bf2.writeCharCode(0x63); // c |
| bf1.write(new String.fromCharCode(0xD823)); |
| bf2.writeCharCode(0xD823); |
| bf1.write(new String.fromCharCode(0xDC23)); |
| bf2.writeCharCode(0xDC23); |
| bf1.write("\u{1d49e}"); |
| bf2.writeCharCode(0x1d49e); |
| bf1.write("\x00"); |
| bf2.writeCharCode(0); |
| Expect.equals(bf1.toString(), bf2.toString()); |
| Expect.equals("abc\u{18c23}\u{1d49e}\x00", bf2.toString()); |
| |
| // Mixing strings and char-codes. |
| bf1.clear(); |
| bf1.write("abcde"); |
| bf1.writeCharCode(0x61); |
| bf1.writeCharCode(0x62); |
| bf1.writeCharCode(0x63); |
| bf1.write("d"); |
| bf1.writeCharCode(0x65); |
| Expect.equals("abcdeabcde", bf1.toString()); |
| |
| // Out-of-range character codes are not allowed. |
| Expect.throws(() { |
| bf2.writeCharCode(-1); |
| }); |
| Expect.throws(() { |
| bf2.writeCharCode(0x110000); |
| }); |
| } |
| |
| void testBufferLength(int length, StringBuffer bf) { |
| Expect.equals(length, bf.length); |
| (length == 0 ? Expect.isTrue : Expect.isFalse)(bf.isEmpty); |
| (length != 0 ? Expect.isTrue : Expect.isFalse)(bf.isNotEmpty); |
| } |
| |
| void main() { |
| testToString(); |
| testConstructor(); |
| testLength(); |
| testIsEmpty(); |
| testWrite(); |
| testWriteCharCode(); |
| testWriteAll(); |
| testWriteAll2(); |
| testWriteln(); |
| testClear(); |
| testChaining(); |
| } |