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description(
'This is a test case for String.prototype.fontsize(size).'
);

// This test is based on http://mathias.html5.org/tests/javascript/string/.

// Check that the quotation mark is correctly escaped.
shouldBe("'_'.fontsize('\"')", '"<font size=\\"&quot;\\">_</font>"');

// Simple case.
shouldBe("'_'.fontsize('b')", '"<font size=\\"b\\">_</font>"');

// Does not escape special characters in `this` value.
shouldBe("'<'.fontsize('b')", '"<font size=\\"b\\"><</font>"');

// First argument gets ToString()ed.
shouldBe("'_'.fontsize(0x2A)", '"<font size=\\"42\\">_</font>"');

// Check that the quotation mark is correctly escaped.
shouldBe("'_'.fontsize('\"')", '"<font size=\\"&quot;\\">_</font>"');
shouldBe("'_'.fontsize('\" color=\"b')", '"<font size=\\"&quot; color=&quot;b\\">_</font>"');

// Generic use on Number object.
shouldBe("String.prototype.fontsize.call(0x2A, 0x2A)", '"<font size=\\"42\\">42</font>"');

// Generic use on non-coercible object `undefined`.
shouldThrow("String.prototype.fontsize.call(undefined)", '"TypeError: Type error"');

// Generic use on non-coercible object `null`.
shouldThrow("String.prototype.fontsize.call(null)", '"TypeError: Type error"');

// Check fontsize.length.
shouldBe("String.prototype.fontsize.length", "1");