Migrated test block 17 to Dart 2.0.

tests/corelib_strong/num_parse_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.
-
-import "package:expect/expect.dart";
-
-const whiteSpace = const [
-  "",
-  "\x09",
-  "\x0a",
-  "\x0b",
-  "\x0c",
-  "\x0d",
-  "\x85",
-  "\xa0",
-  "\u1680",
-  "\u2000",
-  "\u2001",
-  "\u2002",
-  "\u2003",
-  "\u2004",
-  "\u2005",
-  "\u2006",
-  "\u2007",
-  "\u2008",
-  "\u2009",
-  "\u200a",
-  "\u2028",
-  "\u2029",
-  "\u202f",
-  "\u205f",
-  "\u3000",
-  "\uFEFF"
-];
-
-void expectNumEquals(num expect, num actual, String message) {
-  if (expect is double && expect.isNaN) {
-    Expect.isTrue(actual is double && actual.isNaN, "isNaN: $message");
-  } else {
-    Expect.identical(expect, actual, message);
-  }
-}
-
-// Test source surrounded by any combination of whitespace.
-void testParseAllWhitespace(String source, num result) {
-  for (String ws1 in whiteSpace) {
-    for (String ws2 in whiteSpace) {
-      String padded = "$ws1$source$ws2";
-      // Use Expect.identical because it also handles NaN and 0.0/-0.0.
-      // Except on dart2js: http://dartbug.com/11551
-      expectNumEquals(result, num.parse(padded), "parse '$padded'");
-      padded = "$ws1$ws2$source";
-      expectNumEquals(result, num.parse(padded), "parse '$padded'");
-      padded = "$source$ws1$ws2";
-      expectNumEquals(result, num.parse(padded), "parse '$padded'");
-    }
-  }
-}
-
-// Test source and -source surrounded by any combination of whitespace.
-void testParseWhitespace(String source, num result) {
-  assert(result >= 0);
-  testParseAllWhitespace(source, result);
-  testParseAllWhitespace("-$source", -result);
-}
-
-// Test parsing source, optionally preceeded and/or followed by whitespace.
-void testParse(String source, num result) {
-  expectNumEquals(result, num.parse(source), "parse '$source'");
-  expectNumEquals(result, num.parse(" $source"), "parse ' $source'");
-  expectNumEquals(result, num.parse("$source "), "parse '$source '");
-  expectNumEquals(result, num.parse(" $source "), "parse ' $source '");
-}
-
-// Test parsing an integer in decimal or hex format, with or without signs.
-void testInt(int value) {
-  testParse("$value", value);
-  testParse("+$value", value);
-  testParse("-$value", -value);
-  var hex = "0x${value.toRadixString(16)}";
-  var lchex = hex.toLowerCase();
-  testParse(lchex, value);
-  testParse("+$lchex", value);
-  testParse("-$lchex", -value);
-  var uchex = hex.toUpperCase();
-  testParse(uchex, value);
-  testParse("+$uchex", value);
-  testParse("-$uchex", -value);
-}
-
-// Test parsing an integer, and the integers just around it.
-void testIntAround(int value) {
-  testInt(value - 1);
-  testInt(value);
-  testInt(value + 1);
-}
-
-void testDouble(double value) {
-  testParse("$value", value);
-  testParse("+$value", value);
-  testParse("-$value", -value);
-  if (value.isFinite) {
-    String exp = value.toStringAsExponential();
-    String lcexp = exp.toLowerCase();
-    testParse(lcexp, value);
-    testParse("+$lcexp", value);
-    testParse("-$lcexp", -value);
-    String ucexp = exp.toUpperCase();
-    testParse(ucexp, value);
-    testParse("+$ucexp", value);
-    testParse("-$ucexp", -value);
-  }
-}
-
-void testFail(String source) {
-  var object = new Object();
-  Expect.throws(() {
-    num.parse(source, (s) {
-      Expect.equals(source, s);
-      throw object;
-    });
-  }, (e) => identical(object, e), "Fail: '$source'");
-}
-
-void main() {
-  testInt(0);
-  testInt(1);
-  testInt(9);
-  testInt(10);
-  testInt(99);
-  testInt(100);
-  testIntAround(256);
-  testIntAround(0x80000000); // 2^31
-  testIntAround(0x100000000); // 2^32
-  testIntAround(0x10000000000000); // 2^52
-  testIntAround(0x20000000000000); // 2^53
-  testIntAround(0x40000000000000); // 2^54
-  testIntAround(0x8000000000000000); // 2^63
-  testIntAround(0x10000000000000000); // 2^64
-  testIntAround(0x100000000000000000000); // 2^80
-
-  testDouble(0.0);
-  testDouble(5e-324);
-  testDouble(2.225073858507201e-308);
-  testDouble(2.2250738585072014e-308);
-  testDouble(0.49999999999999994);
-  testDouble(0.5);
-  testDouble(0.50000000000000006);
-  testDouble(0.9999999999999999);
-  testDouble(1.0);
-  testDouble(1.0000000000000002);
-  testDouble(4294967295.0);
-  testDouble(4294967296.0);
-  testDouble(4503599627370495.5);
-  testDouble(4503599627370497.0);
-  testDouble(9007199254740991.0);
-  testDouble(9007199254740992.0);
-  testDouble(1.7976931348623157e+308);
-  testDouble(double.INFINITY);
-  testDouble(double.NAN); //         //# 01: ok
-
-  // Strings that cannot occur from toString of a number.
-  testParse("000000000000", 0);
-  testParse("000000000001", 1);
-  testParse("000000000000.0000000000000", 0.0);
-  testParse("000000000001.0000000000000", 1.0);
-  testParse("0x0000000000", 0);
-  testParse("0e0", 0.0);
-  testParse("0e+0", 0.0);
-  testParse("0e-0", 0.0);
-  testParse("-0e0", -0.0);
-  testParse("-0e+0", -0.0);
-  testParse("-0e-0", -0.0);
-  testParse("1e0", 1.0);
-  testParse("1e+0", 1.0);
-  testParse("1e-0", 1.0);
-  testParse("-1e0", -1.0);
-  testParse("-1e+0", -1.0);
-  testParse("-1e-0", -1.0);
-  testParse("1.", 1.0);
-  testParse(".1", 0.1);
-  testParse("1.e1", 10.0);
-  testParse(".1e1", 1.0);
-
-  testParseWhitespace("0x1", 1);
-  testParseWhitespace("1", 1);
-  testParseWhitespace("1.0", 1.0);
-  testParseWhitespace("1e1", 10.0);
-  testParseWhitespace(".1e1", 1.0);
-  testParseWhitespace("1.e1", 10.0);
-  testParseWhitespace("1e+1", 10.0);
-  testParseWhitespace("1e-1", 0.1);
-
-  // Negative tests - things not to allow.
-
-  // Spaces inside the numeral.
-  testFail("- 1");
-  testFail("+ 1");
-  testFail("2 2");
-  testFail("0x 42");
-  testFail("1 .");
-  testFail(". 1");
-  testFail("1e 2");
-  testFail("1 e2");
-  // Invalid characters.
-  testFail("0x1H");
-  testFail("12H");
-  testFail("1x2");
-  testFail("00x2");
-  testFail("0x2.2");
-  // Empty hex number.
-  testFail("0x");
-  testFail("-0x");
-  testFail("+0x");
-  // Double exponent without value.
-  testFail(".e1");
-  testFail("e1");
-  testFail("e+1");
-  testFail("e-1");
-  testFail("-e1");
-  testFail("-e+1");
-  testFail("-e-1");
-  // Incorrect ways to write NaN/Infinity.
-  testFail("infinity");
-  testFail("INFINITY");
-  testFail("1.#INF");
-  testFail("inf");
-  testFail("nan");
-  testFail("NAN");
-  testFail("1.#IND");
-  testFail("indef");
-  testFail("qnan");
-  testFail("snan");
-}