Updated to Swift 4.0 (#61)

* Updated to Swift 4

* Deleted Package.pins

* Finalised conversion to Swift 4 only

* Migration to Swift 4.0.2

.gitignore

@@ -1,7 +1,7 @@
 *.DS_Store
-*.pkg
-.build
-/SwiftRedis.xcodeproj
+.build/*
+.build-ubuntu/*
+*.xcodeproj/*
 Package.resolved
 Packages
-build
+build/*

.swift-version

@@ -1 +1 @@
-3.1.1
+4.0.2

.travis.yml

@@ -14,17 +14,9 @@ matrix:
     - os: linux
       dist: trusty
       sudo: required
-    - os: linux
-      dist: trusty
-      sudo: required
-      env: SWIFT_SNAPSHOT=$SWIFT_4_DEV_SNAPSHOT
-    - os: osx
-      osx_image: xcode8.3
-      sudo: required
     - os: osx
-      osx_image: xcode9
+      osx_image: xcode9.1
       sudo: required
-      env: SWIFT_SNAPSHOT=$SWIFT_4_DEV_SNAPSHOT
 
 before_install:
   - git clone https://github.com/IBM-Swift/Kitura-CI.git

Package.swift

@@ -1,3 +1,6 @@
+// swift-tools-version:4.0
+// The swift-tools-version declares the minimum version of Swift required to build this package.
+
 /**
  * Copyright IBM Corporation 2016, 2017
  *
@@ -18,7 +21,25 @@ import PackageDescription
 
 let package = Package(
     name: "SwiftRedis",
+    products: [
+        // Products define the executables and libraries produced by a package, and make them visible to other packages.
+        .library(
+            name: "SwiftRedis",
+            targets: ["SwiftRedis"]),
+        ],
     dependencies: [
-        .Package(url: "https://github.com/IBM-Swift/BlueSocket.git", majorVersion: 0, minor: 12)
-    ]
+        // Dependencies declare other packages that this package depends on.
+        // .package(url: /* package url */, from: "1.0.0"),
+        .package(url: "https://github.com/IBM-Swift/BlueSocket.git", from: "0.12.0")
+    ],
+    targets: [
+        // Targets are the basic building blocks of a package. A target defines a module or a test suite.
+        // Targets can depend on other targets in this package, and on products in packages which this package depends on.
+        .target(
+            name: "SwiftRedis",
+            dependencies: ["Socket"]),
+        .testTarget(
+            name: "SwiftRedisTests",
+            dependencies: ["SwiftRedis"]),
+        ]
 )

README.md

@@ -8,6 +8,9 @@ KituraRedis is a Swift library for interacting with a Redis database using.
 
 It is dependent on the [BlueSocket](https://github.com/IBM-Swift/BlueSocket.git) module.
 
+## Swift version
+The latest version of Kitura-redis requires **Swift 4.0.2**. You can download this version of the Swift binaries by following this [link](https://swift.org/download/). Compatibility with other Swift versions is not guaranteed.
+
 ## Build:
 
   - `swift build`

Sources/SwiftRedis/RedisInfo.swift

@@ -40,7 +40,9 @@ public struct RedisInfo {
         for val in strArray {
             let pos = val.range(of: ":")
             if let pos = pos {
-                parsedInfo[val.substring(to: pos.lowerBound)] = val.substring(from: pos.upperBound)
+                let key = String(val[..<pos.lowerBound])
+                let value = val[pos.upperBound...]
+                parsedInfo[key] = String(value)
             }
         }
 

Tests/SwiftRedisTests/TestHashCommands.swift

@@ -132,7 +132,7 @@ public class TestHashCommands: XCTestCase {
                                     redis.hstrlen(self.key, field: self.field1) {(length: Int?, error: NSError?) in
                                         XCTAssertNil(error, "\(error != nil ? error!.localizedDescription : "")")
                                         XCTAssertNotNil(length, "Length of field shouldn't be nil")
-                                        XCTAssertEqual(length!, expVal1.characters.count, "Length of field should be \(expVal1.characters.count), was \(length!)")
+                                        XCTAssertEqual(length!, expVal1.count, "Length of field should be \(expVal1.count), was \(length!)")
                                     }
                                 }
                             }

Tests/SwiftRedisTests/TestStringAndBitCommands.swift

@@ -47,12 +47,12 @@ public class TestStringAndBitCommands: XCTestCase {
                 redis.append(self.key1, value: self.expVal2) {(length: Int?, error: NSError?) in
                     XCTAssertNil(error, "\(error != nil ? error!.localizedDescription : "")")
                     XCTAssertNotNil(length, "Length result shouldn't be nil")
-                    XCTAssertEqual(length!, self.expVal1.characters.count+self.expVal2.characters.count, "Length of updated \(self.key1) is incorrect")
+                    XCTAssertEqual(length!, self.expVal1.count+self.expVal2.count, "Length of updated \(self.key1) is incorrect")
 
                     redis.strlen(self.key1) {(length: Int?, error: NSError?) in
                         XCTAssertNil(error, "\(error != nil ? error!.localizedDescription : "")")
                         XCTAssertNotNil(length, "Length result shouldn't be nil")
-                        XCTAssertEqual(length!, self.expVal1.characters.count+self.expVal2.characters.count, "Length of updated \(self.key1) is incorrect")
+                        XCTAssertEqual(length!, self.expVal1.count+self.expVal2.count, "Length of updated \(self.key1) is incorrect")
 
                         redis.getrange(self.key1, start: 7, end: 11) {(value: RedisString?, error: NSError?) in
                             XCTAssertNil(error, "\(error != nil ? error!.localizedDescription : "")")
@@ -62,7 +62,7 @@ public class TestStringAndBitCommands: XCTestCase {
                             redis.setrange(self.key1, offset: 7, value: self.expVal3) {(length: Int?, error: NSError?) in
                                 XCTAssertNil(error, "\(error != nil ? error!.localizedDescription : "")")
                                 XCTAssertNotNil(length, "Length result shouldn't be nil")
-                                XCTAssertEqual(length!, self.expVal1.characters.count+self.expVal2.characters.count, "Length of updated \(self.key1) is incorrect")
+                                XCTAssertEqual(length!, self.expVal1.count+self.expVal2.count, "Length of updated \(self.key1) is incorrect")
 
                                 redis.get(self.key1) {(value: RedisString?, error: NSError?) in
                                     XCTAssertNil(error, "\(error != nil ? error!.localizedDescription : "")")

Tests/SwiftRedisTests/TestTransactionsPart2.swift

@@ -148,7 +148,7 @@ public class TestTransactionsPart2: XCTestCase {
             multi.exec() {(response: RedisResponse) in
                 if  let nestedResponses = self.baseAsserts(response: response, count: 6) {
                     XCTAssertEqual(nestedResponses[0], RedisResponse.Status("OK"), "set didn't return an 'OK'")
-                    let updatedLength = Int64(self.expVal1.characters.count+self.expVal2.characters.count)
+                    let updatedLength = Int64(self.expVal1.count+self.expVal2.count)
                     XCTAssertEqual(nestedResponses[1], RedisResponse.IntegerValue(updatedLength), "Length of updated \(self.key1) is incorrect")
                     XCTAssertEqual(nestedResponses[2], RedisResponse.IntegerValue(updatedLength), "Length of updated \(self.key1) is incorrect")
                     XCTAssertEqual(nestedResponses[3], RedisResponse.StringValue(RedisString(", 1 2")), "Get of getrange wasn't ', 1 2' was \(nestedResponses[3])")

docker-compose.yml

@@ -0,0 +1,5 @@
+app:
+  image: ibmcom/swift-ubuntu:4.0.2
+  volumes:
+    - .:/KituraRedis
+  command: bash -c "cd /KituraRedis  && swift package --build-path .build-ubuntu clean && swift build --build-path .build-ubuntu && swift test --build-path .build-ubuntu"