fixup! Add test cases for fixed issues

Author: ayazhafiz

rustfmt-core/rustfmt-lib/tests/source/issue-3550.rs

@@ -0,0 +1,37 @@
+fn main() {
+    assert(long()
+        .long()
+        .long()
+        .long()
+        .long()
+        .long()
+        .long()
+        .long()
+        .long()
+        .long()
+        .long()
+        .long()
+        .long()
+        .long()
+        .long()
+        .long(),
+    );
+
+    assert!(long()
+        .long()
+        .long()
+        .long()
+        .long()
+        .long()
+        .long()
+        .long()
+        .long()
+        .long()
+        .long()
+        .long()
+        .long()
+        .long()
+        .long()
+        .long(),);
+}
+

rustfmt-core/rustfmt-lib/tests/target/issue-3068.rs

@@ -5,10 +5,8 @@ macro_rules! foo {
 		$bar(|x| {
 			if x {
 				None;
-				None
 			} else {
 				None;
-				None
 			}
 		})
 	};