Add tests for tuple element indentation

Author: stevapple

Tests/SwiftSyntaxBuilderTest/FunctionTests.swift

@@ -70,6 +70,31 @@ final class FunctionTests: XCTestCase {
       }
       """)
   }
+  
+  func testMultilineFunctionCallExpr() {
+    let builder = FunctionCallExpr("""
+      test(
+      p1: value1,
+      p2: value2,
+      p3: value3,
+      p4: value4,
+      p5: value5
+      )
+      """)
+    
+    print(builder.formatted().description)
+    
+    AssertBuildResult(builder, """
+      test(
+          p1: value1,
+          p2: value2,
+          p3: value3,
+          p4: value4,
+          p5: value5
+      )
+      """)
+  }
+  
   func testParensEmittedForNoArgumentsAndNoTrailingClosure() {
     let buildable = FunctionCallExpr(callee: ExprSyntax("test"))
     AssertBuildResult(buildable, "test()")

Tests/SwiftSyntaxBuilderTest/TupleTests.swift

@@ -0,0 +1,49 @@
+//===----------------------------------------------------------------------===//
+//
+// This source file is part of the Swift.org open source project
+//
+// Copyright (c) 2022 Apple Inc. and the Swift project authors
+// Licensed under Apache License v2.0 with Runtime Library Exception
+//
+// See https://swift.org/LICENSE.txt for license information
+// See https://swift.org/CONTRIBUTORS.txt for the list of Swift project authors
+//
+//===----------------------------------------------------------------------===//
+
+import XCTest
+import SwiftSyntax
+import SwiftSyntaxBuilder
+
+final class TupleTests: XCTestCase {
+  func testLabeledElementList() {
+    let builder = TupleExprSyntax("(p1: value1, p2: value2, p3: value3)")
+    
+    print(builder.formatted().description)
+    
+    AssertBuildResult(builder, "(p1: value1, p2: value2, p3: value3)")
+  }
+  
+  func testMultilineElementList() {
+    let builder = TupleExprSyntax("""
+      (
+      p1: value1,
+      p2: value2,
+      p3: value3,
+      p4: value4,
+      p5: value5
+      )
+      """)
+    
+    print(builder.formatted().description)
+    
+    AssertBuildResult(builder, """
+      (
+          p1: value1,
+          p2: value2,
+          p3: value3,
+          p4: value4,
+          p5: value5
+      )
+      """)
+  }
+}