add test for handling double semicolon (rust-lang#3706)

rchaser53 · topecongiro · commit da2ed095f379 · 2019-07-29T05:56:34.000+09:00
diff --git a/tests/source/issue-3672.rs b/tests/source/issue-3672.rs
@@ -0,0 +1,4 @@
+fn main() {
+    let x = 5;;
+    
+}
diff --git a/tests/target/issue-3672.rs b/tests/target/issue-3672.rs
@@ -0,0 +1,3 @@
+fn main() {
+    let x = 5;
+}

-Original file line number
+Diff line change
@@ @@ -0,0 +1,4 @@ @@
 +fn main() {
 +    let x = 5;;
++
 +}