From 3b3ee84a84c7173928419247f65c724988782f87 Mon Sep 17 00:00:00 2001
From: John Firebaugh <john.firebaugh@gmail.com>
Date: Tue, 12 Mar 2013 14:58:16 -0700
Subject: [PATCH] Specs for Way#areAdjacent

---
 js/id/core/way.js     |  2 +-
 test/spec/core/way.js | 24 ++++++++++++++++++++++++
 2 files changed, 25 insertions(+), 1 deletion(-)

diff --git a/js/id/core/way.js b/js/id/core/way.js
index 14bbd14fd..9eb27650d 100644
--- a/js/id/core/way.js
+++ b/js/id/core/way.js
@@ -59,7 +59,7 @@ _.extend(iD.Way.prototype, {
 
     areAdjacent: function(n1, n2) {
         for (var i = 0; i < this.nodes.length; i++) {
-            if (this.nodes[i]  === n1) {
+            if (this.nodes[i] === n1) {
                 if (this.nodes[i - 1] === n2) return true;
                 if (this.nodes[i + 1] === n2) return true;
             }
diff --git a/test/spec/core/way.js b/test/spec/core/way.js
index 00f33b4df..935d51dc4 100644
--- a/test/spec/core/way.js
+++ b/test/spec/core/way.js
@@ -141,6 +141,30 @@ describe('iD.Way', function() {
         });
     });
 
+    describe("#areAdjacent", function() {
+        it("returns false for nodes not in the way", function() {
+            expect(iD.Way().areAdjacent('a', 'b')).to.equal(false);
+        });
+
+        it("returns false for non-adjacent nodes in the way", function() {
+            expect(iD.Way({nodes: ['a', 'b', 'c']}).areAdjacent('a', 'c')).to.equal(false);
+        });
+
+        it("returns true for adjacent nodes in the way (forward)", function() {
+            var way = iD.Way({nodes: ['a', 'b', 'c', 'd']});
+            expect(way.areAdjacent('a', 'b')).to.equal(true);
+            expect(way.areAdjacent('b', 'c')).to.equal(true);
+            expect(way.areAdjacent('c', 'd')).to.equal(true);
+        });
+
+        it("returns true for adjacent nodes in the way (reverse)", function() {
+            var way = iD.Way({nodes: ['a', 'b', 'c', 'd']});
+            expect(way.areAdjacent('b', 'a')).to.equal(true);
+            expect(way.areAdjacent('c', 'b')).to.equal(true);
+            expect(way.areAdjacent('d', 'c')).to.equal(true);
+        });
+    });
+
     describe("#geometry", function() {
         it("returns 'line' when the way is not an area", function () {
             expect(iD.Way().geometry()).to.equal('line');