tests/corelib/symbol_operator_test.dart

// Copyright (c) 2013, 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.

// Test of Symbol class for operators..

var $ = new Symbolize();

main() {
  testSymbol(#+, $+$, "+");
  testSymbol(#-, $-$, "-");
  testSymbol(#*, $*$, "*");
  testSymbol(#/, $/$, "/");
  testSymbol(#~/, $~/$, "~/");
  testSymbol(#%, $%$, "%");
  testSymbol(#<<, $<<$, "<<");
  testSymbol(#>>, $>>$, ">>");
  testSymbol(#~, ~$, "~");
  testSymbol(#|, $|$, "|");
  testSymbol(#&, $&$, "&");
  testSymbol(#^, $^$, "^");
  testSymbol(#<, $<$, "<");
  testSymbol(#<=, $<=$, "<=");
  testSymbol(#>, $>$, ">");
  testSymbol(#>=, $>=$, ">=");
  testSymbol(#==, new Symbol("=="), "==");  // Can't hit noSuchMethod.
  testSymbol(#[], $[$], "[]");
  testSymbol(#[]=, ($[$]=$).lastMember, "[]=");
  testSymbol(const Symbol("unary-"), -$, "unary-");

  testSymbolThrows(">>>");  /// 03: ok
  testSymbolThrows("!");    /// 03: continued
  testSymbolThrows("&&");   /// 03: continued
  testSymbolThrows("||");   /// 03: continued
  testSymbolThrows("?");    /// 03: continued
  testSymbolThrows("?:");   /// 03: continued
  testSymbolThrows("#");    /// 03: continued
  testSymbolThrows("//");   /// 03: continued
}

void testSymbol(Symbol constSymbol, var mirrorSymbol, String name) {
  Symbol dynamicSymbol = new Symbol(name);
  if (constSymbol != mirrorSymbol) {
    throw "Not equal #$name, \$$name: $constSymbol, $mirrorSymbol";
  }
  if (constSymbol != dynamicSymbol) {
    throw "Not equal #$name, new Symbol('$name'): $constSymbol, $dynamicSymbol";
  }
  if (mirrorSymbol != dynamicSymbol) {
    throw "Not equal \$$name, new Symbol('$name'): "
          "$mirrorSymbol, $dynamicSymbol";
  }
  if (constSymbol.hashCode != mirrorSymbol.hashCode) {
    throw "HashCode not equal #$name, \$$name: $constSymbol, $mirrorSymbol";
  }
  if (constSymbol.hashCode != dynamicSymbol.hashCode) {
    throw "HashCode not equal #$name, new Symbol('$name'): "
          "$constSymbol, $dynamicSymbol";
  }
  if (mirrorSymbol.hashCode != dynamicSymbol.hashCode) {
    throw "HashCode not equal \$$name, new Symbol('$name'): "
          "$mirrorSymbol, $dynamicSymbol";
  }
}

void testSymbolThrows(name) {
  bool fails = false;
  try {
    new Symbol(name);
  } catch (e) {
    fails = true;
  }
  if (!fails) {
    throw "Didn't throw: $name";
  }
}

class Symbolize {
  Symbol lastMember;
  noSuchMethod(m) => lastMember = m.memberName;
}