fix(fmt): add missing EOF newline (foundry-rs#2177)

* fix(fmt): add missing EOF newline

* test(fmt): add missing EOL newlines to fmt.sol files

fmt/src/formatter.rs

@@ -1156,6 +1156,9 @@ impl<'a, W: Write> Visitor for Formatter<'a, W> {
         self.comments.remove_comments_before(self.source.len());
         write_chunk!(self, self.source.len(), "{}", comments.trim_end())?;
 
+        // EOF newline
+        writeln!(self.buf())?;
+
         Ok(())
     }
 
@@ -2799,7 +2802,7 @@ mod tests {
         }
         let expected_comments = Comments::new(expected_comments, expected_source);
 
-        let expected = PrettyString(expected_source.trim().to_string());
+        let expected = PrettyString(expected_source.to_string());
 
         let mut source_formatted = String::new();
         let mut f = Formatter::new(&mut source_formatted, source, source_comments, config.clone());

fmt/testdata/ArrayExpressions/fmt.sol

@@ -67,4 +67,4 @@ contract ArrayExpressions {
         uint256[1] memory literal3 =
             [ /* comment11 */ someVeryVeryLongVariableName /* comment13 */ ];
     }
-}
+}

fmt/testdata/ForStatement/fmt.sol

@@ -24,4 +24,4 @@ contract ForStatement {
             "test";
         }
     }
-}
+}

fmt/testdata/FunctionCallArgsStatement/fmt.sol

@@ -50,4 +50,4 @@ contract FunctionCallArgsStatement {
             gas: gasleft()
         };
     }
-}
+}

fmt/testdata/NamedFunctionCallExpression/fmt.sol

@@ -44,4 +44,4 @@ contract NamedFunctionCallExpression {
                 // comment8
         });
     }
-}
+}

fmt/testdata/RevertStatement/fmt.sol

@@ -48,4 +48,4 @@ contract RevertStatement {
             someVeryLongFunctionNameToGetDynamicErrorMessageString() /* comment17 */
         );
     }
-}
+}

fmt/testdata/TernaryExpression/fmt.sol

@@ -20,4 +20,4 @@ contract TernaryExpression {
             // comment7
             : 0; // comment8
     }
-}
+}

fmt/testdata/ThisExpression/fmt.sol

@@ -17,4 +17,4 @@ contract ThisExpression {
             this // comment 4
         );
     }
-}
+}

fmt/testdata/TryStatement/fmt.sol

@@ -71,4 +71,4 @@ contract TryStatement {
             unknown.handleError();
         } catch {}
     }
-}
+}

fmt/testdata/UnitExpression/fmt.sol

@@ -21,4 +21,4 @@ contract UnitExpression {
             // comment4
             ether; // comment5
     }
-}
+}