Merge pull request #109 from Carthage/swift4-build-matrix

[CI] Test against 4.0-DEVELOPMENT-SNAPSHOT

Author: ikesyo

.travis.yml

@@ -14,13 +14,15 @@ matrix:
       language: objective-c
       env: JOB=Xcode8
     - script:
+        - swift --version
         - swift build
         - SWIFTPM_TEST_Commandant=YES swift test
       os: osx
       osx_image: xcode8.3
       language: objective-c
       env: JOB=SPM
     - script:
+        - swift --version
         - swift build
         - SWIFTPM_TEST_Commandant=YES swift test
       env: JOB=Linux
@@ -29,6 +31,18 @@ matrix:
       language: generic
       install:
         - eval "$(curl -sL https://gist.githubusercontent.com/kylef/5c0475ff02b7c7671d2a/raw/02090c7ede5a637b76e6df1710e83cd0bbe7dcdf/swiftenv-install.sh)"
+    - script:
+        - swift --version
+        - swift build
+        - SWIFTPM_TEST_Commandant=YES swift test
+      env:
+        - JOB=Linux
+        - SWIFT_VERSION=4.0-DEVELOPMENT-SNAPSHOT-2017-06-11-a
+      sudo: required
+      dist: trusty
+      language: generic
+      install:
+        - eval "$(curl -sL https://gist.githubusercontent.com/kylef/5c0475ff02b7c7671d2a/raw/02090c7ede5a637b76e6df1710e83cd0bbe7dcdf/swiftenv-install.sh)"
 
 notifications:
   email: false

Package.swift

@@ -18,5 +18,6 @@ let package = Package(
             ]
         }
         return deps
-    }()
+    }(),
+    swiftLanguageVersions: [3, 4]
 )

Tests/CommandantTests/CommandSpec.swift

@@ -33,6 +33,6 @@ struct NoOptionsCommand: CommandProtocol {
 	var function: String { return "function" }
 
 	func run(_ options: NoOptions<CommandantError<()>>) -> Result<(), CommandantError<()>> {
-		return .success()
+		return .success(())
 	}
 }