Merge pull request #8 from tfe/master

Author: alexey1312

Sources/SnapshotTestingHEIC/UIView.swift

@@ -15,19 +15,22 @@ public extension Snapshotting where Value == UIView, Format == UIImage {
     ///   `UIAppearance` and `UIVisualEffect`s. This option requires a host application for your tests and
     ///   will _not_ work for framework test targets.
     ///   - precision: The percentage of pixels that must match.
+    ///   - perceptualPrecision: The percentage a pixel must match the source pixel to be considered a match. [98-99% mimics the precision of the human eye.](http://zschuessler.github.io/DeltaE/learn/#toc-defining-delta-e)
     ///   - size: A view size override.
     ///   - traits: A trait collection override.
     ///   - compressionQuality: The desired compression quality to use when writing to an image destination.
     static func imageHEIC(
         drawHierarchyInKeyWindow: Bool = false,
         precision: Float = 1,
+        perceptualPrecision: Float = 1,
         size: CGSize? = nil,
         traits: UITraitCollection = .init(),
         compressionQuality: CompressionQuality = .lossless
     )
     -> Snapshotting {
         return SimplySnapshotting.imageHEIC(
             precision: precision,
+            perceptualPrecision: perceptualPrecision,
             scale: traits.displayScale,
             compressionQuality: compressionQuality
         ).asyncPullback { view in

Sources/SnapshotTestingHEIC/UIViewController.swift

@@ -13,19 +13,22 @@ public extension Snapshotting where Value == UIViewController, Format == UIImage
     /// - Parameters:
     ///   - config: A set of device configuration settings.
     ///   - precision: The percentage of pixels that must match.
+    ///   - perceptualPrecision: The percentage a pixel must match the source pixel to be considered a match. [98-99% mimics the precision of the human eye.](http://zschuessler.github.io/DeltaE/learn/#toc-defining-delta-e)
     ///   - size: A view size override.
     ///   - traits: A trait collection override.
     ///   - compressionQuality: The desired compression quality to use when writing to an image destination.
     static func imageHEIC(
         on config: ViewImageConfig,
         precision: Float = 1,
+        perceptualPrecision: Float = 1,
         size: CGSize? = nil,
         traits: UITraitCollection = .init(),
         compressionQuality: CompressionQuality = .lossless
     )
     -> Snapshotting {
         return SimplySnapshotting.imageHEIC(
             precision: precision,
+            perceptualPrecision: perceptualPrecision,
             scale: traits.displayScale,
             compressionQuality: compressionQuality
         ).asyncPullback { viewController in
@@ -46,19 +49,22 @@ public extension Snapshotting where Value == UIViewController, Format == UIImage
     ///   and `UIVisualEffect`s. This option requires a host application for your tests
     ///   and will _not_ work for framework test targets.
     ///   - precision: The percentage of pixels that must match.
+    ///   - perceptualPrecision: The percentage a pixel must match the source pixel to be considered a match. [98-99% mimics the precision of the human eye.](http://zschuessler.github.io/DeltaE/learn/#toc-defining-delta-e)
     ///   - size: A view size override.
     ///   - traits: A trait collection override.
     ///   - compressionQuality: The desired compression quality to use when writing to an image destination.
     static func imageHEIC(
         drawHierarchyInKeyWindow: Bool = false,
         precision: Float = 1,
+        perceptualPrecision: Float = 1,
         size: CGSize? = nil,
         traits: UITraitCollection = .init(),
         compressionQuality: CompressionQuality = .lossless
     )
     -> Snapshotting {
         return SimplySnapshotting.imageHEIC(
             precision: precision,
+            perceptualPrecision: perceptualPrecision,
             scale: traits.displayScale,
             compressionQuality: compressionQuality
         ).asyncPullback { viewController in