updating neighbor joining documentation

test/neighbor-join-test.js

@@ -1,24 +1,20 @@
-var fs = require("fs");
-
-var tape = require("tape"),
+const tape = require("tape"),
  phylotree = require("../dist/phylotree");
 
-tape("tip length export", function(test) {
+tape("neighbor joining", function(test) {
 
- let D = [
+ const D = [
  [0, 5, 9, 9, 8],
  [5, 0, 10, 10, 9],
  [9, 10, 0, 8, 7],
  [9, 10, 8, 0, 3],
  [8, 9, 7, 3, 0]
  ];
 
- let nodeList = ["A","B","C","D","E"];
- let nj = phylotree.neighborJoining(D, nodeList.length, nodeList)
- let expectedTree = "((((A:2,B:3)InternalNode0:3,C:4)InternalNode1:2,D:2)InternalNode2:0.5,E:0.5):0;"
- test.equal(nj.getNewick(), expectedTree)
+ const nodeList = ["A","B","C","D","E"];
+ const nj = phylotree.neighborJoining(D, nodeList.length, nodeList);
+ const expectedTree = "((((A:2,B:3)InternalNode0:3,C:4)InternalNode1:2,D:2)InternalNode2:0.5,E:0.5):0;";
+ test.equal(nj.getNewick(), expectedTree);
  test.end();
 
 });
-
-