[WorkspaceTests] Migrate Workspace tests to new testing infrastructur…

Sources/SourceControl/InMemoryGitRepository.swift

@@ -60,6 +60,11 @@ public final class InMemoryGitRepository {
         return Array(tagsMap.keys)
     }
 
+    /// The list of revisions in the repository.
+    public var revisions: [RevisionIdentifier] {
+        return Array(history.keys)
+    }
+
     /// Indicates whether there are any uncommited changes in the repository.
     fileprivate var isDirty = false
 
@@ -94,7 +99,7 @@ public final class InMemoryGitRepository {
     @discardableResult
     public func commit() -> String {
         // Create a fake hash for thie commit.
-        let hash = NSUUID().uuidString
+        let hash = String((NSUUID().uuidString + NSUUID().uuidString).prefix(40))
         head.hash = hash
         // Store the commit in history.
         history[hash] = head.copy()
@@ -230,7 +235,7 @@ extension InMemoryGitRepository: Repository {
     }
 
     public func resolveRevision(identifier: String) throws -> Revision {
-        fatalError("unimplemented")
+        return Revision(identifier: tagsMap[identifier] ?? identifier)
     }
 
     public func exists(revision: Revision) -> Bool {
@@ -253,11 +258,11 @@ extension InMemoryGitRepository: WorkingCheckout {
     }
 
     public func hasUnpushedCommits() throws -> Bool {
-        fatalError("Unimplemented")
+        return false
     }
 
     public func checkout(newBranch: String) throws {
-        fatalError("Unimplemented")
+        history[newBranch] = head
     }
 }
 

Sources/Workspace/Workspace.swift

@@ -679,10 +679,12 @@ extension Workspace {
         if let path = path {
             try fileSystem.createDirectory(editablesPath)
             // FIXME: We need this to work with InMem file system too.
-            try createSymlink(
-                editablesPath.appending(component: packageName),
-                pointingAt: path,
-                relative: false)
+            if !(fileSystem is InMemoryFileSystem) {
+                try createSymlink(
+                    editablesPath.appending(component: packageName),
+                    pointingAt: path,
+                    relative: false)
+            }
         }
 
         // Save the new state.

Tests/CommandsTests/PackageToolTests.swift

@@ -435,6 +435,56 @@ final class PackageToolTests: XCTestCase {
         }
     }
 
+    func testSymlinkedDependency() {
+        mktmpdir { path in
+            var fs = localFileSystem
+            let root = path.appending(components: "root")
+            let dep = path.appending(components: "dep")
+            let depSym = path.appending(components: "depSym")
+
+            // Create root package.
+            try fs.writeFileContents(root.appending(components: "Sources", "root", "main.swift")) { $0 <<< "" }
+            try fs.writeFileContents(root.appending(component: "Package.swift")) {
+                $0 <<< """
+                // swift-tools-version:4.0
+                import PackageDescription
+                let package = Package(
+                name: "root",
+                dependencies: [.package(url: "../depSym", from: "1.0.0")],
+                targets: [.target(name: "root", dependencies: ["dep"])]
+                )
+
+                """
+            }
+
+            // Create dependency.
+            try fs.writeFileContents(dep.appending(components: "Sources", "dep", "lib.swift")) { $0 <<< "" }
+            try fs.writeFileContents(dep.appending(component: "Package.swift")) {
+                $0 <<< """
+                // swift-tools-version:4.0
+                import PackageDescription
+                let package = Package(
+                name: "dep",
+                products: [.library(name: "dep", targets: ["dep"])],
+                targets: [.target(name: "dep")]
+                )
+                """
+            }
+            do {
+                let depGit = GitRepository(path: dep)
+                try depGit.create()
+                try depGit.stageEverything()
+                try depGit.commit()
+                try depGit.tag(name: "1.0.0")
+            }
+
+            // Create symlink to the dependency.
+            try createSymlink(depSym, pointingAt: dep)
+
+            _ = try execute(["resolve"], packagePath: root)
+        }
+    }
+
     static var allTests = [
         ("testDescribe", testDescribe),
         ("testUsage", testUsage),
@@ -452,5 +502,6 @@ final class PackageToolTests: XCTestCase {
         ("testPackageReset", testPackageReset),
         ("testPinning", testPinning),
         ("testPinningBranchAndRevision", testPinningBranchAndRevision),
+        ("testSymlinkedDependency", testSymlinkedDependency),
     ]
 }