blob: 8a24b35a306d702236de56df9f7a21e103bc1e26 [file] [log] [blame]
// 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();
}