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build/node_modules/stable/test.js

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+var test = require('tape');
+var stable = require('./stable.js');
+
+
+function cmp(a, b) {
+    if (a === b) return 0;
+    if (a > b) return 1;
+    return -1;
+}
+
+function gt(a, b) {
+    return a > b;
+}
+
+function diff(a, b) {
+    return a - b;
+}
+
+function objCmp(a, b) {
+    return a.x > b.x;
+}
+
+test('always returns a new array', function(t) {
+    var array;
+
+    array = [];
+    t.doesNotEqual(array, stable(array));
+
+    array = [1];
+    t.doesNotEqual(array, stable(array));
+
+    array = [1, 2];
+    t.doesNotEqual(array, stable(array));
+
+    t.end();
+});
+
+test('in-place always returns the same array', function(t) {
+    var array;
+
+    array = [];
+    t.equal(array, stable.inplace(array));
+
+    array = [1];
+    t.equal(array, stable.inplace(array));
+
+    array = [1, 2];
+    t.equal(array, stable.inplace(array));
+
+    t.end();
+});
+
+test('basic sorting', function(t) {
+    t.same(
+        stable(["foo", "bar", "baz"]),
+        ["bar", "baz", "foo"]
+    );
+
+    t.same(
+        stable([9, 2, 10, 5, 4, 3, 0, 1, 8, 6, 7]),
+        [0, 1, 10, 2, 3, 4, 5, 6, 7, 8, 9]
+    );
+
+    t.end();
+});
+
+test('comparators', function(t) {
+    t.same(
+        stable([9, 2, 10, 5, 4, 3, 0, 1, 8, 6, 7], cmp),
+        [0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10]
+    );
+
+    t.same(
+        stable([9, 2, 10, 5, 4, 3, 0, 1, 8, 6, 7], gt),
+        [0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10]
+    );
+
+    t.same(
+        stable([9, 2, 10, 5, 4, 3, 0, 1, 8, 6, 7], diff),
+        [0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10]
+    );
+
+    t.same(
+        stable([{x:4}, {x:3}, {x:5}], objCmp),
+        [{x:3}, {x:4}, {x:5}]
+    );
+
+    t.end();
+});
+
+test('stable sorting', function(t) {
+    function cmp(a, b) {
+        return a.x > b.x;
+    }
+    t.same(
+        stable([{x:3,y:1}, {x:4,y:2}, {x:3,y:3}, {x:5,y:4}, {x:3,y:5}], cmp),
+        [{x:3,y:1}, {x:3,y:3}, {x:3,y:5}, {x:4,y:2}, {x:5,y:4}]
+    );
+
+    t.end();
+});