diff --git a/src/ascii_art.rs b/src/ascii_art.rs
index 944beaa11..235e03a92 100644
--- a/src/ascii_art.rs
+++ b/src/ascii_art.rs
@@ -257,37 +257,39 @@ mod test {
   
     #[test]
     fn truncate() {
-        let colors_shim = Vec::new();
-        assert_eq!(Tokens("").render(&colors_shim, 0, 0), "\u{1b}[1;37m\u{1b}[0m");
+        assert_eq!(
+            Tokens("").truncate(0, 0).collect::<Vec<_>>(), 
+            Tokens("").collect::<Vec<_>>()
+        );
 
         assert_eq!(
-            Tokens("     ").render(&colors_shim, 0, 0),
-            "\u{1b}[1;37m\u{1b}[0m"
+            Tokens("     ").truncate(0, 0).collect::<Vec<_>>(),
+            Tokens("").collect::<Vec<_>>()
         );
         assert_eq!(
-            Tokens("     ").render(&colors_shim, 0, 5),
-            "\u{1b}[1;37m     \u{1b}[0m"
+            Tokens("     ").truncate(0, 5).collect::<Vec<_>>(),
+            Tokens("     ").collect::<Vec<_>>()
         );
         assert_eq!(
-            Tokens("     ").render(&colors_shim, 1, 5),
-            "\u{1b}[1;37m    \u{1b}[0m"
+            Tokens("     ").truncate(1, 5).collect::<Vec<_>>(),
+            Tokens("    ").collect::<Vec<_>>()
         );
         assert_eq!(
-            Tokens("     ").render(&colors_shim, 3, 5),
-            "\u{1b}[1;37m  \u{1b}[0m"
+            Tokens("     ").truncate(3, 5).collect::<Vec<_>>(),
+            Tokens("  ").collect::<Vec<_>>()
         );
         assert_eq!(
-            Tokens("     ").render(&colors_shim, 0, 4),
-            "\u{1b}[1;37m    \u{1b}[0m"
+            Tokens("     ").truncate(0, 4).collect::<Vec<_>>(),
+            Tokens("    ").collect::<Vec<_>>()
         );
         assert_eq!(
-            Tokens("     ").render(&colors_shim, 0, 3),
-            "\u{1b}[1;37m   \u{1b}[0m"
+            Tokens("     ").truncate(0, 3).collect::<Vec<_>>(),
+            Tokens("   ").collect::<Vec<_>>()
         );
 
         assert_eq!(
-            Tokens("  {1} {5}  {9} a").render(&colors_shim, 4, 10),
-            "\u{1b}[1;37m\u{1b}[0m\u{1b}[1;37m\u{1b}[0m\u{1b}[1;37m \u{1b}[0m\u{1b}[1;37m a\u{1b}[0m   "
+            Tokens("  {1} {5}  {9} a").truncate(4, 10).collect::<Vec<_>>(),
+            Tokens("{1}{5} {9} a").collect::<Vec<_>>()
         );
     }
 }