Implement Double.{toString, toStringAsExponential, toStringAsPrecision}

tests/language/src/DoubleToString.dart

Index: tests/language/src/DoubleToString.dart
diff --git a/tests/language/src/DoubleToString.dart b/tests/language/src/DoubleToString.dart
new file mode 100644
index 0000000000000000000000000000000000000000..6e852a138a147f34ccfe0adc1481e96cd27a22df
--- /dev/null
+++ b/tests/language/src/DoubleToString.dart
@@ -0,0 +1,65 @@
+// Copyright (c) 2012, 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 basic integer operations.
+
+main() {
+  Expect.equals("NaN", (double.NAN).toString());
+  Expect.equals("Infinity", (1/0).toString());
+  Expect.equals("-Infinity", (-1/0).toString());
+  Expect.equals("0.0", (0.0).toString());
+  Expect.equals("9.0", (9.0).toString());
+  Expect.equals("90.0", (90.0).toString());
+  Expect.equals("90.12", (90.12).toString());
+  Expect.equals("0.1", (0.1).toString());
+  Expect.equals("0.01", (0.01).toString());
+  Expect.equals("0.0123", (0.0123).toString());
+  Expect.equals("111111111111111110000.0",
+                (111111111111111111111.0).toString());
+  Expect.equals("1.1111111111111111e+21",
+                (1111111111111111111111.0).toString());
+  Expect.equals("1.1111111111111111e+22",
+                (11111111111111111111111.0).toString());
+  Expect.equals("0.00001", (0.00001).toString());
+  Expect.equals("0.000001", (0.000001).toString());
+  Expect.equals("1e-7", (0.0000001).toString());
+  Expect.equals("1.2e-7", (0.00000012).toString());
+  Expect.equals("1.23e-7", (0.000000123).toString());
+  Expect.equals("1e-8", (0.00000001).toString());
+  Expect.equals("1.2e-8", (0.000000012).toString());
+  Expect.equals("1.23e-8", (0.0000000123).toString());
+
+  Expect.equals("-0.0", (-0.0).toString());
+  Expect.equals("-9.0", (-9.0).toString());
+  Expect.equals("-90.0", (-90.0).toString());
+  Expect.equals("-90.12", (-90.12).toString());
+  Expect.equals("-0.1", (-0.1).toString());
+  Expect.equals("-0.01", (-0.01).toString());
+  Expect.equals("-0.0123", (-0.0123).toString());
+  Expect.equals("-111111111111111110000.0",
+                (-111111111111111111111.0).toString());
+  Expect.equals("-1.1111111111111111e+21",
+                (-1111111111111111111111.0).toString());
+  Expect.equals("-1.1111111111111111e+22",
+                (-11111111111111111111111.0).toString());
+  Expect.equals("-0.00001", (-0.00001).toString());
+  Expect.equals("-0.000001", (-0.000001).toString());
+  Expect.equals("-1e-7", (-0.0000001).toString());
+  Expect.equals("-1.2e-7", (-0.00000012).toString());
+  Expect.equals("-1.23e-7", (-0.000000123).toString());
+  Expect.equals("-1e-8", (-0.00000001).toString());
+  Expect.equals("-1.2e-8", (-0.000000012).toString());
+  Expect.equals("-1.23e-8", (-0.0000000123).toString());
+
+  Expect.equals("1000.0", (1000.0).toString());
+  Expect.equals("0.00001", (0.00001).toString());
+  Expect.equals("1000000000000000100.0", (1000000000000000128.0).toString());
+  Expect.equals("1e+21", (1000000000000000012800.0).toString());
+  Expect.equals("-1e+21", (-1000000000000000012800.0).toString());
+  Expect.equals("1e-7", (0.0000001).toString());
+  Expect.equals("-1e-7", (-0.0000001).toString());
+  Expect.equals("1.0000000000000001e+21",
+                (1000000000000000128000.0).toString());
+  Expect.equals("0.000001", (0.000001).toString());
+  Expect.equals("1e-7", (0.0000001).toString());
+}