fails:Integer#chr without argument returns a String
fails:Integer#chr without argument returns a new String for each call
fails:Integer#chr without argument raises a RangeError is self is less than 0
fails:Integer#chr without argument when Encoding.default_internal is nil raises a RangeError is self is greater than 255
fails:Integer#chr without argument when Encoding.default_internal is nil and self is between 0 and 127 (inclusive) returns a US-ASCII String
fails:Integer#chr without argument when Encoding.default_internal is nil and self is between 0 and 127 (inclusive) returns a String encoding self interpreted as a US-ASCII codepoint
fails:Integer#chr without argument when Encoding.default_internal is nil and self is between 128 and 255 (inclusive) returns an ASCII-8BIT String
fails:Integer#chr without argument when Encoding.default_internal is nil and self is between 128 and 255 (inclusive) returns a String containing self interpreted as a byte
fails:Integer#chr without argument when Encoding.default_internal is not nil and self is between 0 and 127 (inclusive) returns a US-ASCII String
fails:Integer#chr without argument when Encoding.default_internal is not nil and self is between 0 and 127 (inclusive) returns a String encoding self interpreted as a US-ASCII codepoint
fails:Integer#chr without argument when Encoding.default_internal is not nil and self is between 128 and 255 (inclusive) returns an ASCII-8BIT String
fails:Integer#chr without argument when Encoding.default_internal is not nil and self is between 128 and 255 (inclusive) returns a String containing self interpreted as a byte
fails:Integer#chr without argument when Encoding.default_internal is not nil and self is greater than 255 returns a String with the default internal encoding
fails:Integer#chr without argument when Encoding.default_internal is not nil and self is greater than 255 returns a String encoding self interpreted as a codepoint in the default internal encoding
fails:Integer#chr without argument when Encoding.default_internal is not nil and self is greater than 255 raises RangeError if self is invalid as a codepoint in the default internal encoding
fails:Integer#chr with an encoding argument returns a String
fails:Integer#chr with an encoding argument returns a new String for each call
fails:Integer#chr with an encoding argument accepts a String as an argument
fails:Integer#chr with an encoding argument converts a String to an Encoding as Encoding.find does
fails:Integer#chr with an encoding argument raises a RangeError is self is less than 0
fails:Integer#chr with an encoding argument returns a String with the specified encoding
fails:Integer#chr with an encoding argument returns a String encoding self interpreted as a codepoint in the specified encoding
fails:Integer#chr with an encoding argument raises RangeError if self is invalid as a codepoint in the specified encoding
