Update linux-tests; fail if warnings on travis

* Update linux-tests; fail if warnings on travis

* Fix warnings on Linux

* Typo

* Can’t test these on Linux

.travis.yml

@@ -16,18 +16,21 @@ xcode_scheme: Path.swift-Package
 jobs:
   include:
     - name: macOS / Swift 4.0.3
+      before_script: swift build -Xswiftc -warnings-as-errors
       script: swift test --parallel -Xswiftc -swift-version -Xswiftc 4
 
-    - name: macOS / Swift 4.2.1
+    - &std
+      name: macOS / Swift 4.2.1
+      before_script: swift build -Xswiftc -warnings-as-errors
       script: swift test --parallel
 
-    - name: macOS / Swift 5.0
+    - <<: *std
+      name: macOS / Swift 5.0
       osx_image: xcode10.2
-      script: swift test --parallel
 
-    - name: macOS / Swift 5.1
+    - <<: *std
+      name: macOS / Swift 5.1
       osx_image: xcode11
-      script: swift test --parallel
 
     - &xcodebuild
       before_install: swift package generate-xcodeproj --enable-code-coverage
@@ -57,6 +60,7 @@ jobs:
       language: generic
       sudo: false
       install: eval "$(curl -sL https://swiftenv.fuller.li/install.sh)"
+      before_script: swift build -Xswiftc -warnings-as-errors
       script: swift test --parallel
 
     - <<: *linux

Sources/Path+FileManager.swift

@@ -30,7 +30,7 @@ public extension Pathish {
             try FileManager.default.removeItem(at: to.url)
         }
     #if os(Linux) && !swift(>=5.2) // check if fixed
-        if !overwrite, to.kind != nil {
+        if !overwrite, to.type != nil {
             throw CocoaError.error(.fileWriteFileExists)
         }
     #endif
@@ -70,7 +70,7 @@ public extension Pathish {
             try FileManager.default.removeItem(at: rv.url)
         }
     #if os(Linux) && !swift(>=5.2) // check if fixed
-        if !overwrite, rv.kind != nil {
+        if !overwrite, rv.type != nil {
             throw CocoaError.error(.fileWriteFileExists)
         }
     #endif

Sources/Path+ls.swift

@@ -13,7 +13,7 @@ public extension Path {
 
         private let enumerator: FileManager.DirectoryEnumerator!
 
-        /// The range of directory depths for which the find operation will return entries.b
+        /// The range of directory depths for which the find operation will return entries.
         private(set) public var depth: ClosedRange<Int> = 1...Int.max
 
         /// The kinds of filesystem entries find operations will return.

Tests/PathTests/PathTests+ls().swift

@@ -11,16 +11,16 @@ extension PathTests {
             do {
                 let finder = tmpdir.find().depth(max: 1)
                 XCTAssertEqual(finder.depth, 1...1)
-            #if !os(Linux) || swift(>=5)
+              #if !os(Linux) || swift(>=5)
                 XCTAssertEqual(Set(finder), Set([tmpdir.a, tmpdir.b, tmpdir.c].map(Path.init)))
-            #endif
+              #endif
             }
             do {
                 let finder = tmpdir.find().depth(max: 0)
                 XCTAssertEqual(finder.depth, 0...0)
-            #if !os(Linux) || swift(>=5)
+              #if !os(Linux) || swift(>=5)
                 XCTAssertEqual(Set(finder), Set())
-            #endif
+              #endif
             }
         }
     }
@@ -34,16 +34,20 @@ extension PathTests {
             do {
                 let finder = tmpdir.find().depth(max: 2)
                 XCTAssertEqual(finder.depth, 1...2)
+              #if !os(Linux) || swift(>=5)
                 XCTAssertEqual(
                     Set(finder),
                     Set([tmpdir.a, tmpdir.b, tmpdir.b.d, tmpdir.b.c].map(Path.init)))
+              #endif
             }
             do {
                 let finder = tmpdir.find().depth(max: 3)
                 XCTAssertEqual(finder.depth, 1...3)
+              #if !os(Linux) || swift(>=5)
                 XCTAssertEqual(
                     Set(finder),
                     Set([tmpdir.a, tmpdir.b, tmpdir.b.d, tmpdir.b.c, tmpdir.b.d.e].map(Path.init)))
+              #endif
             }
         }
     }

Tests/PathTests/XCTestManifests.swift

@@ -26,8 +26,8 @@ extension PathTests {
         ("testFilesystemAttributes", testFilesystemAttributes),
         ("testFindExtension", testFindExtension),
         ("testFindKinds", testFindKinds),
-        ("testFindMaxDepth0", testFindMaxDepth0),
         ("testFindMaxDepth1", testFindMaxDepth1),
+        ("testFindMaxDepth2", testFindMaxDepth2),
         ("testFlatMap", testFlatMap),
         ("testInitializerForRelativePath", testInitializerForRelativePath),
         ("testIsDirectory", testIsDirectory),