Fix OrderedImports to treat file ignore directive comment as file header

Author: TTOzzi

Sources/SwiftFormat/Rules/OrderedImports.swift

@@ -86,7 +86,11 @@ public final class OrderedImports: SyntaxFormatRule {
       if atStartOfFile {
         switch line.type {
         case .comment:
-          commentBuffer.append(line)
+          if line.description.contains("swift-format-ignore-file") {
+            fileHeader.append(line)
+          } else {
+            commentBuffer.append(line)
+          }
           continue
 
         case .blankLine:
@@ -520,8 +524,8 @@ fileprivate class Line {
   }
 }
 
-extension Line: CustomDebugStringConvertible {
-  var debugDescription: String {
+extension Line: CustomStringConvertible {
+  var description: String {
     var description = ""
     if !leadingTrivia.isEmpty {
       var newlinesCount = 0

Tests/SwiftFormatTests/Rules/OrderedImportsTests.swift

@@ -651,4 +651,36 @@ final class OrderedImportsTests: LintOrFormatRuleTestCase {
       ]
     )
   }
+
+  func testImportsOrderWithFileIgnoreDirective() {
+    assertFormatting(
+      OrderedImports.self,
+      input: """
+        // swift-format-ignore-file: DoNotUseSemicolons, FullyIndirectEnum
+        // Line comment for Zoo
+        import Zoo
+        // Line comment for Array
+        1️⃣import Arrays
+
+        struct Foo {
+          func foo() { bar();baz(); }
+        }
+        """,
+      expected: """
+        // swift-format-ignore-file: DoNotUseSemicolons, FullyIndirectEnum
+
+        // Line comment for Array
+        import Arrays
+        // Line comment for Zoo
+        import Zoo
+
+        struct Foo {
+          func foo() { bar();baz(); }
+        }
+        """,
+      findings: [
+        FindingSpec("1️⃣", message: "sort import statements lexicographically")
+      ]
+    )
+  }
 }