From c1b5dd296f045eb60e1ed120ea4f12fd138c2f38 Mon Sep 17 00:00:00 2001
From: Yuheng Chen <yuhengchen@sensetime.com>
Date: Thu, 4 Jun 2015 16:10:43 +0800
Subject: [PATCH] Better code coverage

---
 parser/src/emitter.rs |  2 ++
 parser/src/parser.rs  |  5 +++--
 parser/src/scanner.rs | 16 ++++++++++++++++
 3 files changed, 21 insertions(+), 2 deletions(-)

diff --git a/parser/src/emitter.rs b/parser/src/emitter.rs
index 4601ba2..8810c95 100644
--- a/parser/src/emitter.rs
+++ b/parser/src/emitter.rs
@@ -217,6 +217,8 @@ a4:
     - - a1
       - a2
     - 2
+    - []
+    - {}
 a5: 'single_quoted'
 a6: \"double_quoted\"
 a7: 你好
diff --git a/parser/src/parser.rs b/parser/src/parser.rs
index 51001a8..f097a80 100644
--- a/parser/src/parser.rs
+++ b/parser/src/parser.rs
@@ -259,8 +259,10 @@ impl<T: Iterator<Item=char>> Parser<T> {
             State::FlowSequenceEntryMappingKey => self.flow_sequence_entry_mapping_key(),
             State::FlowSequenceEntryMappingValue => self.flow_sequence_entry_mapping_value(),
             State::FlowSequenceEntryMappingEnd => self.flow_sequence_entry_mapping_end(),
+            State::FlowMappingEmptyValue => self.flow_mapping_value(true),
 
-            _ => unimplemented!()
+            /* impossible */
+            State::End => unreachable!(),
         }
     }
 
@@ -329,7 +331,6 @@ impl<T: Iterator<Item=char>> Parser<T> {
                     //}
                 },
                 TokenType::TagDirectiveToken(..) => {
-                    // unimplemented!();
                     // TODO add tag directive
                 },
                 _ => break
diff --git a/parser/src/scanner.rs b/parser/src/scanner.rs
index 8d514cc..470a25d 100644
--- a/parser/src/scanner.rs
+++ b/parser/src/scanner.rs
@@ -1942,6 +1942,22 @@ key:
         end!(p);
     }
 
+    #[test]
+    fn test_scanner_cr() {
+        let s = "---\r\n- tok1\r\n- tok2";
+        let mut p = Scanner::new(s.chars());
+        next!(p, StreamStartToken(..));
+        next!(p, DocumentStartToken);
+        next!(p, BlockSequenceStartToken);
+        next!(p, BlockEntryToken);
+        next_scalar!(p, TScalarStyle::Plain, "tok1");
+        next!(p, BlockEntryToken);
+        next_scalar!(p, TScalarStyle::Plain, "tok2");
+        next!(p, BlockEndToken);
+        next!(p, StreamEndToken);
+        end!(p);
+    }
+
     #[test]
     fn test_uri() {
         // TODO