Big merge from experimental to bleeding edge.

tests/corelib/int_parse_radix_test.dart

+// 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.
+
+void main() {
+  bool checkedMode = false;
+  assert(checkedMode = true);
+
+  for (int i = 0; i < 36 * 36 + 1; i++) {
+    for (int r = 2; r <= 36; r++) {
+      String radixString = i.toRadixString(r);
+      Expect.equals(i, int.parse(radixString, radix: r), "");
+      Expect.equals(i, int.parse(" $radixString", radix: r), "");
+      Expect.equals(i, int.parse("$radixString ", radix: r), "");
+      Expect.equals(i, int.parse(" $radixString ", radix: r), "");
+      Expect.equals(i, int.parse("+$radixString", radix: r), "");
+      Expect.equals(i, int.parse(" +$radixString", radix: r), "");
+      Expect.equals(i, int.parse("+$radixString ", radix: r), "");
+      Expect.equals(i, int.parse(" +$radixString ", radix: r), "");
+      Expect.equals(-i, int.parse("-$radixString", radix: r), "");
+      Expect.equals(-i, int.parse(" -$radixString", radix: r), "");
+      Expect.equals(-i, int.parse("-$radixString ", radix: r), "");
+      Expect.equals(-i, int.parse(" -$radixString ", radix: r), "");
+    }
+  }
+  // Allow both upper- and lower-case letters.
+  Expect.equals(0xABCD, int.parse("ABCD", radix: 16));
+  Expect.equals(0xABCD, int.parse("abcd", radix: 16)); 
+  Expect.equals(15628859, int.parse("09azAZ", radix: 36));
+
+  // Allow whitespace before and after the number.
+  Expect.equals(1, int.parse(" 1", radix: 2));
+  Expect.equals(1, int.parse("1 ", radix: 2));
+  Expect.equals(1, int.parse(" 1 ", radix: 2));
+  Expect.equals(1, int.parse("\n1", radix: 2));
+  Expect.equals(1, int.parse("1\n", radix: 2));
+  Expect.equals(1, int.parse("\n1\n", radix: 2));
+  Expect.equals(1, int.parse("+1", radix: 2));
+
+  void testFails(String source, int radix) {
+    Expect.throws(() { throw int.parse(source, radix: radix,
+                                       onError: (s) { throw "FAIL"; }); },
+                  (e) => e == "FAIL",
+                  "$source/$radix");
+    Expect.equals(-999, int.parse(source, radix: radix, onError: (s) => -999));
+  }
+  for (int i = 2; i < 36; i++) {
+    testFails(i.toRadixString(36), i);
+  }
+  testFails("", 2);
+  testFails("0x10", 16);  // No 0x specially allowed.
+  testFails("+ 1", 2);  // No space between sign and digits.
+  testFails("- 1", 2);  // No space between sign and digits.
+
+  testBadTypes(var source, var radix) {
+    if (!checkedMode) {
+      // No promises on what error is thrown if the type doesn't match.
+      // Likely either ArgumentError or NoSuchMethodError.
+      Expect.throws(() => int.parse(source, radix: radix, onError: (s) => 0));
+      return;
+    }
+    // In checked mode, it's always a TypeError.
+    Expect.throws(() => int.parse(source, radix: radix, onError: (s) => 0),
+                  (e) => e is TypeError);
+  }
+
+  testBadTypes(9, 10);
+  testBadTypes(true, 10);
+  testBadTypes("0", true);
+  testBadTypes("0", "10");
+
+  testBadArguments(String source, int radix) {
+    // If the types match, it should be an ArgumentError of some sort.
+    Expect.throws(() => int.parse(source, radix: radix, onError: (s) => 0),
+                  (e) => e is ArgumentError);
+  }
+
+  testBadArguments("0", -1);
+  testBadArguments("0", 0);
+  testBadArguments("0", 1);
+  testBadArguments("0", 37);
+
+  // If handleError isn't an unary function, and it's called, it also throws
+  // (either TypeError in checked mode, or some failure in unchecked mode).
+  Expect.throws(() => int.parse("9", radix: 8, onError: "not a function"));
+  Expect.throws(() => int.parse("9", radix: 8, onError: () => 42));
+  Expect.throws(() => int.parse("9", radix: 8, onError: (v1, v2) => 42));
+}