Add tests for symbols of operators.

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(#[], $[$], "[]");                      /// 01: ok
+  testSymbol(#[]=, ($[$]=$).lastMember, "[]=");     /// 02: ok
+  testSymbol(const Symbol("unary-"), -$, "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;
+}