From 63bf462e8107872e3c51e9c5400670e591072018 Mon Sep 17 00:00:00 2001
From: Felix Lapalme <lapfelix@users.noreply.github.com>
Date: Sun, 25 Dec 2016 06:37:38 -0500
Subject: [PATCH] Make ConstraintMakerRelatable targets work with UILayoutGuide
 (#372)

* Make ConstraintMakerRelatable targets work with UILayoutGuide

* Fix unit tests on macOS

* Fix the OS API version availability directives
---
 Source/ConstraintMakerRelatable.swift  |  3 +++
 Source/ConstraintRelatableTarget.swift |  4 ++++
 Tests/Tests.swift                      | 18 ++++++++----------
 3 files changed, 15 insertions(+), 10 deletions(-)

diff --git a/Source/ConstraintMakerRelatable.swift b/Source/ConstraintMakerRelatable.swift
index 6b94e1d..98c7158 100644
--- a/Source/ConstraintMakerRelatable.swift
+++ b/Source/ConstraintMakerRelatable.swift
@@ -57,6 +57,9 @@ public class ConstraintMakerRelatable {
         } else if let other = other as? ConstraintConstantTarget {
             related = ConstraintItem(target: nil, attributes: ConstraintAttributes.none)
             constant = other
+        } else if #available(iOS 9.0, OSX 10.11, *), let other = other as? ConstraintLayoutGuide {
+            related = ConstraintItem(target: other, attributes: ConstraintAttributes.none)
+            constant = 0.0
         } else {
             fatalError("Invalid constraint. (\(file), \(line))")
         }
diff --git a/Source/ConstraintRelatableTarget.swift b/Source/ConstraintRelatableTarget.swift
index 4d1e37d..6976367 100644
--- a/Source/ConstraintRelatableTarget.swift
+++ b/Source/ConstraintRelatableTarget.swift
@@ -60,3 +60,7 @@ extension ConstraintItem: ConstraintRelatableTarget {
 
 extension ConstraintView: ConstraintRelatableTarget {
 }
+
+@available(iOS 9.0, OSX 10.11, *)
+extension ConstraintLayoutGuide: ConstraintRelatableTarget {
+}
diff --git a/Tests/Tests.swift b/Tests/Tests.swift
index 651ac69..564be53 100644
--- a/Tests/Tests.swift
+++ b/Tests/Tests.swift
@@ -59,21 +59,21 @@ class SnapKitTests: XCTestCase {
         XCTAssertEqual(self.container.snp_constraints.count, 6, "Should have 6 constraints installed")
         
     }
-
-    #if os(iOS) || os(tvOS)
+    
     func testGuideMakeConstraints() {
-        guard #available(iOS 9.0, *) else { return }
+        guard #available(iOS 9.0, OSX 10.11, *) else { return }
         let v1 = View()
-        let g1 = UILayoutGuide()
+
+        let g1 = ConstraintLayoutGuide()
         self.container.addSubview(v1)
         self.container.addLayoutGuide(g1)
-        
+            
         v1.snp.makeConstraints { (make) -> Void in
-            make.top.equalTo(g1.snp.top).offset(50)
+            make.top.equalTo(g1).offset(50)
             make.left.equalTo(g1.snp.top).offset(50)
             return
         }
-        
+            
         XCTAssertEqual(self.container.snp_constraints.count, 2, "Should have 2 constraints installed")
         
         g1.snp.makeConstraints { (make) -> Void in
@@ -83,8 +83,7 @@ class SnapKitTests: XCTestCase {
         
         XCTAssertEqual(self.container.snp_constraints.count, 6, "Should have 6 constraints installed")
     }
-    #endif
-
+    
     func testMakeImpliedSuperviewConstraints() {
         let v1 = View()
         let v2 = View()
@@ -130,7 +129,6 @@ class SnapKitTests: XCTestCase {
         
     }
     
-    
     func testRemakeConstraints() {
         let v1 = View()
         let v2 = View()