text: // Copyright 2009 the Sputnik authors.  All rights reserved.
  // This code is governed by the BSD license found in the LICENSE file.
  
  /*---
  info: "Step 4: If this number value is NaN, return the string \"NaN\""
  es5id: 15.7.4.5_A1.3_T01
  description: NaN is computed by new Number("string")
  ---*/
  assert.sameValue((new Number("a")).toFixed(), "NaN", '(new Number("a")).toFixed() must return "NaN"');
  assert.sameValue((new Number("a")).toFixed(0), "NaN", '(new Number("a")).toFixed(0) must return "NaN"');
  assert.sameValue((new Number("a")).toFixed(1), "NaN", '(new Number("a")).toFixed(1) must return "NaN"');
  assert.sameValue((new Number("a")).toFixed(1.1), "NaN", '(new Number("a")).toFixed(1.1) must return "NaN"');
  assert.sameValue((new Number("a")).toFixed(0.9), "NaN", '(new Number("a")).toFixed(0.9) must return "NaN"');
  assert.sameValue((new Number("a")).toFixed("1"), "NaN", '(new Number("a")).toFixed("1") must return "NaN"');
  assert.sameValue((new Number("a")).toFixed("1.1"), "NaN", '(new Number("a")).toFixed("1.1") must return "NaN"');
  assert.sameValue((new Number("a")).toFixed("0.9"), "NaN", '(new Number("a")).toFixed("0.9") must return "NaN"');
  
  assert.sameValue(
    (new Number("a")).toFixed(Number.NaN),
    "NaN",
    '(new Number("a")).toFixed(Number.NaN) must return "NaN"'
  );
  
  assert.sameValue(
    (new Number("a")).toFixed("some string"),
    "NaN",
    '(new Number("a")).toFixed("some string") must return "NaN"'
  );
  
  try {
    s = (new Number("a")).toFixed(Number.POSITIVE_INFINITY);
    throw new Test262Error('#10: (new Number("a")).toFixed(Number.POSITIVE_INFINITY) should throw RangeError, not return NaN');
  }
  catch (e) {
    assert(e instanceof RangeError, 'The result of evaluating (e instanceof RangeError) is expected to be true');
  }
  