added 100% coveradge

Author: pingwinator

Sources/WebLinking.swift

@@ -171,7 +171,7 @@ func split(_ separator: String) -> (String) -> (String, String) {
 
 /// Separate the first element in an array from the rest
 func takeFirst(_ input: [String]) -> (String, ArraySlice<String>) {
-  if let first = input.first {
+  if let first = input.first, first.count > 0 {
     let items = input[input.indices.suffix(from: (input.startIndex + 1))]
     return (first, items)
   }

Tests/WebLinkingTests.swift

@@ -92,6 +92,17 @@ class LinkHeaderTests: XCTestCase {
   }
 
   func testResponseFindNoLinkParameters() {
+    let url = URL(string: "http://test.com/")!
+    let headers = [
+      "Link": "random; text",
+    ]
+    let response = HTTPURLResponse(url: url, statusCode: 200, httpVersion: nil, headerFields: headers)!
+    let foundLink = response.findLink(["rel": "stylesheet"])
+    
+    XCTAssertNil(foundLink)
+  }
+  
+  func testResponseNoLinkParameters() {
     let url = URL(string: "http://test.com/")!
     let headers = [
       "Link2": "random text",
@@ -102,6 +113,17 @@ class LinkHeaderTests: XCTestCase {
     XCTAssertNil(foundLink)
   }
 
+  func testResponseNotALinkParameters() {
+    let url = URL(string: "http://test.com/")!
+    let headers = [
+      "Link": "random text",
+    ]
+    let response = HTTPURLResponse(url: url, statusCode: 200, httpVersion: nil, headerFields: headers)!
+    let foundLink = response.findLink(["rel": "stylesheet"])
+    
+    XCTAssertNil(foundLink)
+  }
+  
   func testResponseFindAnotherLinkParameters() {
     let url = URL(string: "http://test.com/")!
     let headers = [
@@ -157,3 +179,22 @@ class LinkWihoutParamentersTests: XCTestCase {
     XCTAssertEqual(link.parameters, [:])
 }
 }
+
+
+class EmptyHeaderLinkTests: XCTestCase {
+  var link:Link!
+  
+  override func setUp() {
+    super.setUp()
+    link = Link(header: String())
+  }
+  
+  func testHasURI() {
+    XCTAssertEqual(link.uri, "")
+  }
+  
+  func testHasParameters() {
+    XCTAssertEqual(link.parameters, [:])
+  }
+
+}