run and verify that swift-test are passing

Author: kostiakoval

Tests/Functional/TestMiscellaneous.swift

@@ -347,11 +347,11 @@ class MiscellaneousTestCase: XCTestCase {
         fixture(name: "SwiftTesting/SingleTarget", file: #file, line: #line) { prefix in
             XCTAssertBuilds(prefix)
             XCTAssertFileExists(prefix, ".build", "debug", "Foo.swiftmodule")
+            XCTAssertTests(prefix)
             #if os(OSX)
                 XCTAssertDirectoryExists(prefix, ".build", "debug", "Package.xctest")
             #else
-                //FIXME: test-Package not generated during swift-build on linux so this will fail.
-                //XCTAssertFileExists(prefix, ".build", "debug", "test-Package")
+                XCTAssertFileExists(prefix, ".build", "debug", "test-Package")
             #endif
 
         }

Tests/Functional/Utilities.swift

@@ -131,6 +131,31 @@ func executeSwiftBuild(chdir: String, configuration: Configuration = .Debug, pri
     }
 }
 
+//TODO: refactor swift-build and swift-test tools runing
+func executeSwiftTest(dir: String, printIfError: Bool = false) throws -> String {
+    let toolPath = Resources.findExecutable("swift-test")
+    let env = [String:String]()
+    let args = [toolPath]
+
+    var out = ""
+    do {
+        // FIXME: this probably should be refactored to --chdir arg in swift-test
+        let cwd = try getcwd()
+        defer { _ = try? POSIX.chdir(cwd) }
+        try POSIX.chdir(dir)
+
+        try popen(args, redirectStandardError: true, environment: env) {
+            out += $0
+        }
+        return out
+    } catch {
+        if printIfError {
+            print(out)
+        }
+        throw error
+    }
+}
+
 func mktmpdir(file: StaticString = #file, line: UInt = #line, @noescape body: (String) throws -> Void) {
     do {
         try POSIX.mkdtemp("spm-tests") { dir in
@@ -169,6 +194,16 @@ func XCTAssertBuildFails(paths: String..., file: StaticString = #file, line: UIn
     }
 }
 
+func XCTAssertTests(paths: String..., file: StaticString = #file, line: UInt = #line) {
+    let prefix = Path.join(paths)
+    do {
+        print("    Testing")
+        try executeSwiftTest(prefix, printIfError: true)
+    } catch {
+        XCTFail("swift-test failed:\n\n\(error)\n", file: file, line: line)
+    }
+}
+
 func XCTAssertFileExists(paths: String..., file: StaticString = #file, line: UInt = #line) {
     let path = Path.join(paths)
     if !path.isFile {