Made DryWetMixer tests use PlaygroundOscillator

Author: aure

Tests/AudioKitEXTests/DryWetMixerTests.swift

@@ -1,13 +1,13 @@
 // Copyright AudioKit. All Rights Reserved. Revision History at http://github.com/AudioKit/AudioKit/
 
 import AudioKit
+import AudioKitEX
 import AVFoundation
 import XCTest
 
-/* Commented out until v6
 class DryWetMixerTests: XCTestCase {
-    let input1 = Oscillator(waveform: Table(.triangle))
-    let input2 = Oscillator(waveform: Table(.triangle), frequency: 1280)
+    let input1 = PlaygroundOscillator(waveform: Table(.triangle))
+    let input2 = PlaygroundOscillator(waveform: Table(.triangle), frequency: 1280)
 
     func testDefault() {
         let engine = AudioEngine()
@@ -224,4 +224,3 @@ class DryWetMixerTests: XCTestCase {
      }
      */
 }
-*/

Tests/AudioKitEXTests/ValidatedMD5s.swift

@@ -22,4 +22,9 @@ let validatedMD5s: [String: String] = [
     "-[SequencerTrackTests testOneShot]": "3fbf53f1139a831b3e1a284140c8a53c",
     "-[SequencerTrackTests testTempo]": "1eb7efc6ea54eafbe616dfa8e1a3ef36",
     "-[SequencerTrackTests testNoteBounds]": "6679c7b949d28130549c6a1eb4ceaf59"
+    "-[DryWetMixerTests testBalance0]": "789c1e77803a4f9d10063eb60ca03cea",
+    "-[DryWetMixerTests testBalance1]": "3932bc5d49cbefd4a9dd587d16f4b81c",
+    "-[DryWetMixerTests testDefault]": "45a639729d8698a28f134bbe4ccc9d6c",
+    "-[DryWetMixerTests testDuplicateInput]": "789c1e77803a4f9d10063eb60ca03cea",
+
 ]