Add corelib tests

test/codegen/corelib/string_buffer_test.dart

Index: test/codegen/corelib/string_buffer_test.dart
diff --git a/test/codegen/corelib/string_buffer_test.dart b/test/codegen/corelib/string_buffer_test.dart
new file mode 100644
index 0000000000000000000000000000000000000000..8a24b35a306d702236de56df9f7a21e103bc1e26
--- /dev/null
+++ b/test/codegen/corelib/string_buffer_test.dart
@@ -0,0 +1,236 @@
+// 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();
+}