feat: add unit-tests to CocoaPods, update 1 test

Check changes and comments to them

Author: htmlprogrammist

EmojiPicker.podspec

@@ -11,6 +11,10 @@ Pod::Spec.new do |s|
   s.source_files = 'Sources/EmojiPicker/**/*.swift'
   s.resource_bundle = { "EmojiPicker" => ["Sources/EmojiPicker/**/*.lproj/*.strings"] }
 
+  s.test_spec 'Tests' do |test_spec|
+    test_spec.source_files = 'Tests/**/*.{swift}'
+  end
+  
   s.swift_version = '4.2'
   s.platform = :ios, '11.1'
 end

EmojiPicker.xcodeproj/project.xcworkspace/xcuserdata/egbad.xcuserdatad/UserInterfaceState.xcuserstate

@@ -36,12 +36,16 @@ class UnicodeManagerTests: XCTestCase {
      Tests getting title for `flags` emoji category.
 
      Unit-tests has no access to resource bundle so the result will be `"flags"`.
+     But this access has CocoaPods, when it is time to do `pod lib lint`. That is why we test it in this way:
+     * If the `result` is not equal to the expected ones, we fail our test.
      */
     func testGettingEmojiCategoryTitle() throws {
         let emojiCategory = EmojiCategoryType.flags
 
         let result = unicodeManager.getEmojiCategoryTitle(for: emojiCategory)
 
-        XCTAssertEqual(result, "flags")
+        if result != "flags" && result != "FLAGS" {
+            XCTFail("The expected output should be one of the expected ones, instead we got: \(result)")
+        }
     }
 }