From 407b8668d19ae704204fa4b522952a5831a8f481 Mon Sep 17 00:00:00 2001
From: Jason Silberman <jason@synergy.casa>
Date: Sat, 16 Jun 2018 11:39:45 -0700
Subject: [PATCH] remove sine tests

---
 SwiftNeuralNetwork.xcodeproj/project.pbxproj |  4 --
 Tests/SineTests.swift                        | 76 --------------------
 2 files changed, 80 deletions(-)
 delete mode 100644 Tests/SineTests.swift

diff --git a/SwiftNeuralNetwork.xcodeproj/project.pbxproj b/SwiftNeuralNetwork.xcodeproj/project.pbxproj
index 521a1ad..07143e6 100644
--- a/SwiftNeuralNetwork.xcodeproj/project.pbxproj
+++ b/SwiftNeuralNetwork.xcodeproj/project.pbxproj
@@ -7,7 +7,6 @@
 	objects = {
 
 /* Begin PBXBuildFile section */
-		966DFD2720C465EF00222F0D /* SineTests.swift in Sources */ = {isa = PBXBuildFile; fileRef = 966DFD2620C465EF00222F0D /* SineTests.swift */; };
 		966DFD2920C4A35B00222F0D /* DataNormalizer.swift in Sources */ = {isa = PBXBuildFile; fileRef = 966DFD2820C4A35B00222F0D /* DataNormalizer.swift */; };
 		966DFD2C20C4B61C00222F0D /* DataNormalizerTests.swift in Sources */ = {isa = PBXBuildFile; fileRef = 966DFD2B20C4B61C00222F0D /* DataNormalizerTests.swift */; };
 		96EC01C620C21072008D3A2F /* SwiftNeuralNetwork.framework in Frameworks */ = {isa = PBXBuildFile; fileRef = 96EC01BC20C21072008D3A2F /* SwiftNeuralNetwork.framework */; };
@@ -32,7 +31,6 @@
 /* End PBXContainerItemProxy section */
 
 /* Begin PBXFileReference section */
-		966DFD2620C465EF00222F0D /* SineTests.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = SineTests.swift; sourceTree = "<group>"; };
 		966DFD2820C4A35B00222F0D /* DataNormalizer.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = DataNormalizer.swift; sourceTree = "<group>"; };
 		966DFD2B20C4B61C00222F0D /* DataNormalizerTests.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = DataNormalizerTests.swift; sourceTree = "<group>"; };
 		96EC01BC20C21072008D3A2F /* SwiftNeuralNetwork.framework */ = {isa = PBXFileReference; explicitFileType = wrapper.framework; includeInIndex = 0; path = SwiftNeuralNetwork.framework; sourceTree = BUILT_PRODUCTS_DIR; };
@@ -90,7 +88,6 @@
 			isa = PBXGroup;
 			children = (
 				96EC01D720C210C7008D3A2F /* XORTests.swift */,
-				966DFD2620C465EF00222F0D /* SineTests.swift */,
 				966DFD2B20C4B61C00222F0D /* DataNormalizerTests.swift */,
 				96EC01D820C210C7008D3A2F /* Info.plist */,
 			);
@@ -242,7 +239,6 @@
 			isa = PBXSourcesBuildPhase;
 			buildActionMask = 2147483647;
 			files = (
-				966DFD2720C465EF00222F0D /* SineTests.swift in Sources */,
 				966DFD2C20C4B61C00222F0D /* DataNormalizerTests.swift in Sources */,
 				96EC01D920C210C7008D3A2F /* XORTests.swift in Sources */,
 			);
diff --git a/Tests/SineTests.swift b/Tests/SineTests.swift
deleted file mode 100644
index 40b3b9a..0000000
--- a/Tests/SineTests.swift
+++ /dev/null
@@ -1,76 +0,0 @@
-//
-//  SineTests.swift
-//  SwiftNeuralNetworkTests
-//
-//  Created by Jason Silberman on 6/3/18.
-//  Copyright © 2018 Jason Silberman. All rights reserved.
-//
-
-import XCTest
-@testable import SwiftNeuralNetwork
-
-func generateData(count: Int) -> (xs: [[Double]], ys: [[Double]]) {
-	let randoms = (0..<count).map { _ in
-		return (-4...4).random()
-	}
-	let xs = randoms.map { [$0] }
-	let ys = randoms.map({ [(0.5 * sin($0)) + 0.5] })
-	
-	return (xs, ys)
-}
-
-/// This gives an approximation of the y = 0.5sin(x) + 0.5 function.
-class SineTests: XCTestCase {
-	struct Constants {
-		static let learningRate: Double = 0.9
-	}
-	
-	var network: NeuralNetwork!
-	
-	var normalizer: DataNormalizer!
-	
-	override func setUp() {
-		super.setUp()
-		network = NeuralNetwork(layerStructure: [1, 12, 1], activationFunctions: [.none, .sigmoid, .sigmoid])
-		
-		let (unnormalizedData, trainingResults) = generateData(count: 10)
-		
-		normalizer = DataNormalizer(initialData: unnormalizedData)
-		let trainingData = normalizer.normalize(dataset: unnormalizedData)
-		
-		print(trainingData)
-		print(trainingResults)
-		
-		var lastRSS: Double = 1
-		let threshold: Double = 0.4
-		var count = 0
-		let maxIterations = 100000
-		
-		while lastRSS > threshold && count < maxIterations {
-			count += 1
-			
-			network.train(inputs: trainingData, targetOutputs: trainingResults, learningRate: Constants.learningRate)
-			
-			lastRSS = network.rss(inputs: trainingData, targetOutputs: trainingResults)
-		}
-		
-		if lastRSS > threshold {
-			XCTFail("FAILED! Could not achieve an RSS of: \(threshold). Final RSS was: \(lastRSS)")
-		} else {
-			print("SUCCESSFULLY reached RSS of \(lastRSS) after \(count) tries.")
-		}
-	}
-	
-	func testSine() {
-		let validationData: [[Double]] = [[.pi/2]]
-		let validationResults: [[Double]] = [[1]]
-		
-		for (input, expectedResult) in zip(validationData, validationResults) {
-			let actualResult = network.infer(input: input)
-			// if difference is within 0.5 then the correct answer was given
-			print(input, expectedResult, actualResult)
-//			let difference = abs(actualResult[0] - expectedResult[0])
-//			XCTAssertTrue(difference < 0.5, "Network validation failed. Input: \(input). Expected: \(expectedResult). Actual: \(actualResult)")
-		}
-	}
-}