Add unit tests for ExponentialBackoff

test/ExponentialBackoff.js

@@ -0,0 +1,33 @@
+
+var tape = require( 'tape' );
+var ExponentialBackoff = require( '../lib/ExponentialBackoff' );
+
+
+tape( 'ExponentialBackoff', function(test) {
+    test.test( 'calling increaseBackoff() makes backoff larger', function(t) {
+        var eb = new ExponentialBackoff();
+        var startBackoff = eb.getBackoff();
+        eb.increaseBackoff();
+        t.ok(startBackoff < eb.getBackoff(), 'backoff was not higher');
+        t.end();
+    });
+
+    test.test( 'calling decreaseBackoff() lowers backoff', function(t) {
+        var eb = new ExponentialBackoff();
+        eb.increaseBackoff();
+        var startBackoff = eb.getBackoff();
+        eb.decreaseBackoff();
+        t.ok(startBackoff > eb.getBackoff(), 'backoff was not lower');
+        t.end();
+    });
+
+    test.test( 'calling decreaseBackoff() will not lower backoff below minimum', function(t) {
+        var eb = new ExponentialBackoff();
+        var startBackoff = eb.getBackoff();
+        eb.decreaseBackoff();
+        t.ok(startBackoff === eb.getBackoff(), 'backoff was not equal');
+        t.end();
+    });
+
+    test.end();
+});

test/test.js

@@ -5,3 +5,4 @@
 'use strict';
 
 require('./fuzzy-tester');
+require('./ExponentialBackoff');