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// 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 test program testing string interpolation of expressions.
import "package:expect/expect.dart";
class StringInterpolate2Test {
static var F1;
static void testMain() {
F1 = "1 + 5 = ${1+5}";
Expect.equals("1 + 5 = 6", F1);
var fib = [1, 1, 2, 3, 5, 8, 13, 21];
var i = 5;
var s = "${i}";
Expect.equals("5", s);
s = "fib(${i}) = ${fib[i]}";
Expect.equals("fib(5) = 8", s);
i = 5;
s = "$i squared is ${((x) => x*x)(i)}";
Expect.equals("5 squared is 25", s);
Expect.equals("8", "${fib.length}");
// test single quote
Expect.equals("8", '${fib.length}');
// test multi-line
Expect.equals(
"8",
'${fib.
length}');
var map = {"red": 1, "green": 2, "blue": 3};
s = "green has value ${map["green"]}";
Expect.equals("green has value 2", s);
i = 0;
b() => "${++i}";
s = "aaa ${"bbb ${b()} bbb"} aaa ${b()}";
Expect.equals("aaa bbb 1 bbb aaa 2", s);
// test multiple levels of nesting, including changing quotes and
// multiline string types
s = "a ${(){ return 'b ${(){ return """
c""";}()}'; }()} d";
Expect.equals("a b c d", s);
}
}
main() {
StringInterpolate2Test.testMain();
}