From ff08642d3bcebed619149578e3eeaa3427ca2c1c Mon Sep 17 00:00:00 2001
From: Antonio Scandurra <me@as-cii.com>
Date: Thu, 19 Nov 2015 16:32:38 -0800
Subject: [PATCH] Return early in FakeLinesYardstick for unrendered rows

This allows us to have a more consistent behavior with the real LinesYardstick.
---
 spec/fake-lines-yardstick.coffee | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/spec/fake-lines-yardstick.coffee b/spec/fake-lines-yardstick.coffee
index 9934b1917..1872b8c65 100644
--- a/spec/fake-lines-yardstick.coffee
+++ b/spec/fake-lines-yardstick.coffee
@@ -7,6 +7,7 @@ class FakeLinesYardstick
 
   prepareScreenRowsForMeasurement: ->
     @presenter.getPreMeasurementState()
+    @screenRows = new Set(@presenter.getScreenRows())
 
   getScopedCharacterWidth: (scopeNames, char) ->
     @getScopedCharacterWidths(scopeNames)[char]
@@ -34,6 +35,8 @@ class FakeLinesYardstick
     left = 0
     column = 0
 
+    return {top, left: 0} unless @screenRows.has(screenPosition.row)
+
     iterator = @model.tokenizedLineForScreenRow(targetRow).getTokenIterator()
     while iterator.next()
       characterWidths = @getScopedCharacterWidths(iterator.getScopes())