add: test cases

Author: yuvraj-wale

tests/source/comments_in_paren/comments_in_paren.rs

@@ -0,0 +1,54 @@
+// rustfmt-wrap_comments: true
+
+// Ensure comment preservation in parenthesis
+fn main() {
+    let (/* */ () | () /* */) = ();
+    let (/**/ () | () /**/) = ();
+    let (/*comment*/ () | () /*comment*/) = ();
+    let (/*multi-line
+           comment*/ () | () /*multi-line
+                                comment */) = ();
+    let (/*comment with new line
+         */
+         () | ()
+         /*comment with new line
+         */
+        ) = ();
+}
+
+// Ensure proper handling of line comments
+fn line_comments() {
+    let (// Before
+         ()
+         | 
+         ()
+         // After
+        ) = ();
+}
+
+// Ensure proper handling of block comments with new lines
+fn block_comments_with_new_lines() {
+    let (/* Before
+          * with new line */
+         ()
+         | 
+         ()
+         /* After
+         * with new line */
+        ) = ();
+}
+
+// Ensure inner pattern is getting formatted properly
+// whilst preserving comments in outer parenthesis
+fn inner_pat_formatting() {
+    let (/*comment*/
+        (
+
+        ) 
+        
+        
+        |      (
+            
+        )
+    /*comment*/) = ();
+}

tests/target/comments_in_paren/comments_in_paren.rs

@@ -0,0 +1,43 @@
+// rustfmt-wrap_comments: true
+
+// Ensure comment preservation in parenthesis
+fn main() {
+    let (/**/ () | () /**/) = ();
+    let (/**/ () | () /**/) = ();
+    let (/*comment*/ () | () /*comment*/) = ();
+    let (/*multi-line
+           comment*/ () | () /*multi-line
+                                comment */) = ();
+    let (/*comment with new line
+         */
+         () | ()
+         /*comment with new line
+         */
+        ) = ();
+}
+
+// Ensure proper handling of line comments
+fn line_comments() {
+    let (// Before
+         () | ()
+         // After
+        ) = ();
+}
+
+// Ensure proper handling of block comments with new lines
+fn block_comments_with_new_lines() {
+    let (/* Before
+          * with new line */
+         () | ()
+         /* After
+         * with new line */
+        ) = ();
+}
+
+// Ensure inner pattern is getting formatted properly
+// whilst preserving comments in outer parenthesis
+fn inner_pat_formatting() {
+    let (/*comment*/
+        () | ()
+    /*comment*/) = ();
+}