Pseudo Non-Terminating Decimal Represenation of a Rational Number

pntdrrn.js

function test_pntdrrn_regex(pattern, sample, dividend, divisor) {
	console.log( 
		dividend + "/" + divisor + "\t\t" +
		pattern.toString() +
		( pattern.test(sample) ? "" : " doesn't" ) + " match" + 
		( pattern.test(sample) ? "es " : " " ) + 
		"`" + sample + "`"
	);
}

// Pseudo Non-Terminating Decimal Represenation of a Rational Number
var pntdrrn = /\d{5,}/;

for (var i = 1; i < 10; i++) {
	for (var j = 1; j <= i-1; j++) {
		test_pntdrrn_regex(pntdrrn, (j/i) + "", j, i);	
	}
}

results.js

/*
1/2		/\d{5,}/ doesn't match `0.5`
1/3		/\d{5,}/ matches `0.3333333333333333`
2/3		/\d{5,}/ matches `0.6666666666666666`
1/4		/\d{5,}/ doesn't match `0.25`
2/4		/\d{5,}/ doesn't match `0.5`
3/4		/\d{5,}/ doesn't match `0.75`
1/5		/\d{5,}/ doesn't match `0.2`
2/5		/\d{5,}/ doesn't match `0.4`
3/5		/\d{5,}/ doesn't match `0.6`
4/5		/\d{5,}/ doesn't match `0.8`
1/6		/\d{5,}/ matches `0.16666666666666666`
2/6		/\d{5,}/ matches `0.3333333333333333`
3/6		/\d{5,}/ doesn't match `0.5`
4/6		/\d{5,}/ matches `0.6666666666666666`
5/6		/\d{5,}/ matches `0.8333333333333334`
1/7		/\d{5,}/ matches `0.14285714285714285`
2/7		/\d{5,}/ matches `0.2857142857142857`
3/7		/\d{5,}/ matches `0.42857142857142855`
4/7		/\d{5,}/ matches `0.5714285714285714`
5/7		/\d{5,}/ matches `0.7142857142857143`
6/7		/\d{5,}/ matches `0.8571428571428571`
1/8		/\d{5,}/ doesn't match `0.125`
2/8		/\d{5,}/ doesn't match `0.25`
3/8		/\d{5,}/ doesn't match `0.375`
4/8		/\d{5,}/ doesn't match `0.5`
5/8		/\d{5,}/ doesn't match `0.625`
6/8		/\d{5,}/ doesn't match `0.75`
7/8		/\d{5,}/ doesn't match `0.875`
1/9		/\d{5,}/ matches `0.1111111111111111`
2/9		/\d{5,}/ matches `0.2222222222222222`
3/9		/\d{5,}/ matches `0.3333333333333333`
4/9		/\d{5,}/ matches `0.4444444444444444`
5/9		/\d{5,}/ matches `0.5555555555555556`
6/9		/\d{5,}/ matches `0.6666666666666666`
7/9		/\d{5,}/ matches `0.7777777777777778`
8/9		/\d{5,}/ matches `0.8888888888888888`
*/