Adds more debugging output

Author: calvincestari

Tests/ApolloPaginationTests/BidirectionalPaginationTests.swift

@@ -126,6 +126,15 @@ final class BidirectionalPaginationTests: XCTestCase, CacheDependentTesting {
 
     try XCTAssertSuccessResult(result) { output in
       // Assert first page is unchanged
+      if
+        let oldResults = try? results.first?.get().initialPage,
+        let newResults = try? results.last?.get().initialPage,
+        oldResults != newResults
+      {
+        print("test_fetchMultiplePages_async - debugging output")
+        print("Old: \(oldResults.asJSONDictionary())")
+        print("New: \(newResults.asJSONDictionary())")
+      }
       XCTAssertEqual(try? results.first?.get().initialPage, try? results.last?.get().initialPage)
 
       XCTAssertFalse(output.nextPages.isEmpty)