version bump 0.2.1: adding tests

.npmignore

@@ -0,0 +1 @@
+./test_files

frac.js

@@ -1,3 +1,4 @@
+/* frac.js (C) 2013 SheetJS -- http://sheetjs.com */
 var frac = function(x, D, mixed) {
     var n1 = Math.floor(x), d1 = 1;
     var n2 = n1+1, d2 = 1;
@@ -27,7 +28,7 @@ frac.cont = function cont(x, D, mixed) {
         A = B|0;
         P = A * P_1 + P_2;
         Q = A * Q_1 + Q_2;
-        if((B - A) < 0.00000001) break;
+        if((B - A) < 0.0000000001) break;
         B = 1 / (B - A);
         P_2 = P_1; P_1 = P;
         Q_2 = Q_1; Q_1 = Q;

frac.md

@@ -16,6 +16,7 @@ where `quotient == 0` for improper fractions. The interpretation is
 and `quotient <= x` for negative `x`.
 
 ```js>frac.js
+/* frac.js (C) 2013 SheetJS -- http://sheetjs.com */
 var frac = function(x, D, mixed) {
 ```
 
@@ -122,7 +123,7 @@ Note that the variables are implicitly indexed at `k` (so `B` refers to `b_k`):
 > b_{k+1} = (b_{k} - a_{k})^{-1} 
 
 ```
-        if((B - A) < 0.00000001) break;
+        if((B - A) < 0.0000000001) break;
 ```
 
 At the end of each iteration, advance `k` by one step:
@@ -159,8 +160,38 @@ if(typeof module !== 'undefined') module.exports = frac;
 # Tests
 
 ```js>test.js
+var fs = require('fs'), assert = require('assert');
 var frac;
 describe('source', function() { it('should load', function() { frac = require('./'); }); });
+
+function line(o,j,m) {
+    it(j, function(done) {
+        var d, q, qq;
+        for(var i = j*100; i < m-3 && i < (j+1)*100; ++i) {
+            d = o[i].split("\t");
+
+            q = frac.cont(Number(d[0]), 9, true);
+            qq = (q[0]||q[1]) ? (q[0] || "") + " " + (q[1] ? q[1] + "/" + q[2] : "   ") : "0    ";
+            assert.equal(qq, d[1], d[1] + " 1");
+
+            q = frac.cont(Number(d[0]), 99, true);
+            qq = (q[0]||q[1]) ? (q[0] || "") + " " + (q[1] ? (q[1] < 10 ? " " : "") + q[1] + "/" + q[2] + (q[2]<10?" ":"") : "     ") : "0      ";
+            assert.equal(qq, d[2], d[2] + " 2");
+
+            q = frac.cont(Number(d[0]), 999, true);
+            qq = (q[0]||q[1]) ? (q[0] || "") + " " + (q[1] ? (q[1] < 100 ? " " : "") + (q[1] < 10 ? " " : "") + q[1] + "/" + q[2] + (q[2]<10?" ":"") + (q[2]<100?" ":""): "       ") : "0        ";
+            assert.equal(qq, d[3], d[3] + " 3");
+        }
+        done();
+    });
+}
+function parsetest(o) {
+    for(var j = 0, m = o.length-3; j < m/100; ++j) line(o,j,m);
+}
+describe('xl.00001.tsv', function() {
+    var o = fs.readFileSync('./test_files/xl.00001.tsv', 'utf-8').split("\n");
+    parsetest(o);
+});
 ```
 
 # Miscellany
@@ -179,7 +210,7 @@ test:
 ```json>package.json
 {
     "name": "frac",
-    "version": "0.2.0",
+    "version": "0.2.1",
     "author": "SheetJS",
     "description": "Rational approximation with bounded denominator",
     "keywords": [ "math", "fraction", "rational", "approximation" ],

package.json

@@ -1,6 +1,6 @@
 {
     "name": "frac",
-    "version": "0.2.0",
+    "version": "0.2.1",
     "author": "SheetJS",
     "description": "Rational approximation with bounded denominator",
     "keywords": [ "math", "fraction", "rational", "approximation" ],

test.js

@@ -1,2 +1,32 @@
+var fs = require('fs'), assert = require('assert');
 var frac;
 describe('source', function() { it('should load', function() { frac = require('./'); }); });
+
+function line(o,j,m) {
+    it(j, function(done) {
+        var d, q, qq;
+        for(var i = j*100; i < m-3 && i < (j+1)*100; ++i) {
+            d = o[i].split("\t");
+
+            q = frac.cont(Number(d[0]), 9, true);
+            qq = (q[0]||q[1]) ? (q[0] || "") + " " + (q[1] ? q[1] + "/" + q[2] : "   ") : "0    ";
+            assert.equal(qq, d[1], d[1] + " 1");
+
+            q = frac.cont(Number(d[0]), 99, true);
+            qq = (q[0]||q[1]) ? (q[0] || "") + " " + (q[1] ? (q[1] < 10 ? " " : "") + q[1] + "/" + q[2] + (q[2]<10?" ":"") : "     ") : "0      ";
+            assert.equal(qq, d[2], d[2] + " 2");
+
+            q = frac.cont(Number(d[0]), 999, true);
+            qq = (q[0]||q[1]) ? (q[0] || "") + " " + (q[1] ? (q[1] < 100 ? " " : "") + (q[1] < 10 ? " " : "") + q[1] + "/" + q[2] + (q[2]<10?" ":"") + (q[2]<100?" ":""): "       ") : "0        ";
+            assert.equal(qq, d[3], d[3] + " 3");
+        }
+        done();
+    });
+}
+function parsetest(o) {
+    for(var j = 0, m = o.length-3; j < m/100; ++j) line(o,j,m);
+}
+describe('xl.00001.tsv', function() {
+    var o = fs.readFileSync('./test_files/xl.00001.tsv', 'utf-8').split("\n");
+    parsetest(o);
+});