Don't apply noForceTryInTests if function has a return type

Author: calda

Sources/Rules/NoForceTryInTests.swift

@@ -13,7 +13,8 @@ public extension FormatRule {
         }
 
         formatter.forEach(.keyword("func")) { funcKeywordIndex, _ in
-            guard let functionDecl = formatter.parseFunctionDeclaration(keywordIndex: funcKeywordIndex)
+            guard let functionDecl = formatter.parseFunctionDeclaration(keywordIndex: funcKeywordIndex),
+                  functionDecl.returnType == nil
             else { return }
 
             switch testFramework {

Tests/Rules/NoForceTryInTestsTests.swift

@@ -69,6 +69,10 @@ final class NoForceTryInTestsTests: XCTestCase {
             func something() {
                 try! somethingThatThrows()
             }
+
+            func testHelper() -> String {
+                try! generateString()
+            }
         }
         """
         testFormatting(for: input, rule: .noForceTryInTests)