From e31c231dd7bec1e73b4bf1bcd6c93cf9a75f443a Mon Sep 17 00:00:00 2001
From: Matthew Holt <Matthew.Holt+git@gmail.com>
Date: Tue, 18 Nov 2014 16:51:42 -0700
Subject: [PATCH] Test cases for fast mode; preview fix

---
 papaparse.js        |  3 +++
 tests/test-cases.js | 36 ++++++++++++++++++++++++++++++++++++
 2 files changed, 39 insertions(+)

diff --git a/papaparse.js b/papaparse.js
index c09c133..6190844 100644
--- a/papaparse.js
+++ b/papaparse.js
@@ -1115,7 +1115,10 @@
 					else
 						data.push(rows[i].split(delim));
 					if (preview && i >= preview)
+					{
+						data = data.slice(0, preview);
 						return returnable(true);
+					}
 				}
 				return returnable();
 			}
diff --git a/tests/test-cases.js b/tests/test-cases.js
index 89650f3..e6a7123 100644
--- a/tests/test-cases.js
+++ b/tests/test-cases.js
@@ -343,6 +343,42 @@ var CORE_PARSER_TESTS = [
 			data: [['a'], ['b'], [''], [''], ['c'], ['d'], ['e'], ['']],
 			errors: []
 		}
+	},
+	{
+		description: "Fast mode, basic",
+		input: 'a,b,c\nd,e,f',
+		config: { fastMode: true },
+		expected: {
+			data: [['a', 'b', 'c'], ['d', 'e', 'f']],
+			errors: []
+		}
+	},
+	{
+		description: "Fast mode with comments",
+		input: '// Commented line\na,b,c',
+		config: { fastMode: true, comments: "//" },
+		expected: {
+			data: [['a', 'b', 'c']],
+			errors: []
+		}
+	},
+	{
+		description: "Fast mode with preview",
+		input: 'a,b,c\nd,e,f\nh,j,i\n',
+		config: { fastMode: true, preview: 2 },
+		expected: {
+			data: [['a', 'b', 'c'], ['d', 'e', 'f']],
+			errors: []
+		}
+	},
+	{
+		description: "Fast mode with blank line at end",
+		input: 'a,b,c\n',
+		config: { fastMode: true },
+		expected: {
+			data: [['a', 'b', 'c'], ['']],
+			errors: []
+		}
 	}
 ];