Merge pull request #7 from fireblade-engine/fix-tests

Fix nil image in tests

Package.resolved

@@ -11,21 +11,21 @@
         }
       },
       {
-        "package": "SnapshotTesting",
+        "package": "swift-snapshot-testing",
         "repositoryURL": "https://github.com/pointfreeco/swift-snapshot-testing.git",
         "state": {
           "branch": null,
-          "revision": "114882386a815f4a2e6d8f2f7ee4857acd372438",
-          "version": "1.7.2"
+          "revision": "cef5b3f6f11781dd4591bdd1dd0a3d22bd609334",
+          "version": "1.11.0"
         }
       },
       {
         "package": "SwiftGraph",
         "repositoryURL": "https://github.com/davecom/SwiftGraph.git",
         "state": {
           "branch": null,
-          "revision": "3e9ed26e380b40fcadf80ef5d588829ced251673",
-          "version": "3.0.0"
+          "revision": "76b5180a5cc32eda7f5236a756f4c1e0936311c6",
+          "version": "3.1.0"
         }
       }
     ]

README.md

@@ -1,9 +1,6 @@
 # Fireblade Graph
 
-[![Build Status](https://travis-ci.com/fireblade-engine/graph.svg?branch=master)](https://travis-ci.com/fireblade-engine/graph)
 [![license](https://img.shields.io/badge/license-MIT-brightgreen.svg)](LICENSE)
-[![swift version](https://img.shields.io/badge/swift-5.2-brightgreen.svg)](#)
-[![platforms](https://img.shields.io/badge/platforms-%20macOS%20|%20iOS%20|%20tvOS%20|%20watchOS%20|%20linux%20-brightgreen.svg)](#)
 
 This is a **lightweight**, **fast** and **easy to use** [directed acyclic graph (DAG)](https://en.wikipedia.org/wiki/Directed_acyclic_graph) implementation in Swift.    
 It is developed and maintained as part of the [Fireblade Game Engine](https://github.com/fireblade-engine) project.
@@ -96,13 +93,13 @@ rootNode.update()
 
 ## 🏷️ Versioning
 
-We use [SemVer](http://semver.org/) for versioning. For the versions available, see the [tags on this repository](tags). 
+We use [SemVer](http://semver.org/) for versioning. For the versions available, see the tags on this repository. 
 
 ## ✍️ Authors
 
 * [Christian Treffs](https://github.com/ctreffs)
 
-See also the list of [contributors](graphs/contributors) who participated in this project.
+See also the list of contributors who participated in this project.
 
 ## 🔏 License
 

Tests/FirebladeGraphTests/TraversalTests.swift

@@ -5,8 +5,7 @@
 //  Created by Christian Treffs on 22.08.19.
 //
 
-import class XCTest.XCTestCase
-import func XCTest.XCTAssertEqual
+import XCTest
 import FirebladeGraph
 import struct Foundation.UUID
 import SnapshotTesting
@@ -16,7 +15,7 @@ import SnapshotTesting
 final class TraversalTests: XCTestCase {
     typealias StringNode = Node<String>
 
-    func testDescendLinearGraph() {
+    func testDescendLinearGraph() throws {
         let a = StringNode("a")
         let b = StringNode("b")
         let c = StringNode("c")
@@ -47,12 +46,14 @@ final class TraversalTests: XCTestCase {
         let expected = [a, b, c, d, e, f, g, h, i, j].map { $0.content }
         XCTAssertEqual(result, expected)
 
+        let image = try XCTUnwrap(a.renderGraphAsImage())
+
         #if !os(Linux)
-        assertSnapshot(matching: a.renderGraphAsImage()!, as: .image)
+        assertSnapshot(matching: image, as: .image)
         #endif
     }
 
-    func testDescendSpreadingGraph() {
+    func testDescendSpreadingGraph() throws {
         let a = Node<Int>(0)
         let b = Node<Int>(1)
         let c = Node<Int>(2)
@@ -85,8 +86,9 @@ final class TraversalTests: XCTestCase {
         let expected = [a, b, c, e, f, g, d, h, i, j].map { $0.content }
         XCTAssertEqual(result, expected)
 
+        let image = try XCTUnwrap(a.renderGraphAsImage())
         #if !os(Linux)
-        assertSnapshot(matching: a.renderGraphAsImage()!, as: .image)
+        assertSnapshot(matching: image, as: .image)
         #endif
     }