Fix Linux build (#12)

* `NSError()` is not available on Linux
* Import Foundation and fulfill expectations explicitly in a closure
* Fix incorrect import
* Enumerate all tests to run on Linux
* Fix incorrect declaration of tests

Author: dmcrodrigues

Sources/ReactiveArray.swift

@@ -33,7 +33,8 @@ extension ReactiveArray {
 
 	public var producer: SignalProducer<Change, NoError> {
 		return SignalProducer<Change, NSError>.attempt { [weak self] in
-			guard let `self` = self else { return .failure(NSError()) }
+			guard let `self` = self
+				else { return .failure(NSError(domain: "org.RACCommunity.ReactiveCollections", code: 0, userInfo: nil)) }
 
 			return .success(
 				Delta(

Tests/LinuxMain.swift

@@ -1,7 +1,9 @@
 import XCTest
 import Quick
 
-@testable import ReactiveSwiftTests
+@testable import ReactiveCollectionsTests
 
-XCTMain([ReactiveCollectionsTests.allTests()])
+XCTMain([
+    testCase(ReactiveArrayTests.allTests)
+])
 // Quick.QCKMain([])

Tests/ReactiveCollectionsTests/ReactiveArrayTests.swift

@@ -1,3 +1,4 @@
+import Foundation
 import XCTest
 import ReactiveSwift
 import Result
@@ -47,9 +48,9 @@ class ReactiveArrayTests: XCTestCase {
 		var array = ReactiveArray([1, 2, 3]) as Optional
 
 
-		_ = array?.signal.observeCompleted(completedExpectation.fulfill)
+		_ = array?.signal.observeCompleted { completedExpectation.fulfill() }
 
-		_ = array?.signal.on(disposed: disposedExpectation.fulfill)
+		_ = array?.signal.on(disposed: { disposedExpectation.fulfill() })
 
 		array = nil
 
@@ -659,6 +660,48 @@ class ReactiveArrayTests: XCTestCase {
 	}
 }
 
+// MARK: - Linux support
+
+#if os(Linux)
+extension ReactiveArrayTests {
+
+	static var allTests: [(String, (ReactiveArrayTests) -> () throws -> Void)] {
+		return [
+			("test_initializer", test_initializer),
+			("test_empty_initializer", test_empty_initializer),
+			("test_literal_initializer", test_literal_initializer),
+			("test_repeating_initializer", test_repeating_initializer),
+			("test_lifecycle", test_lifecycle),
+			("test_count", test_count),
+			("test_first", test_first),
+			("test_is_empty", test_is_empty),
+			("test_end_index", test_end_index),
+			("test_start_index", test_start_index),
+			("test_subscripting_access", test_subscripting_access),
+			("test_subscripting_replace_at_head", test_subscripting_replace_at_head),
+			("test_replace_range", test_replace_range),
+			("test_append", test_append),
+			("test_append_contents_of", test_append_contents_of),
+			("test_insert_at_index", test_insert_at_index),
+			("test_insert_contents_of", test_insert_contents_of),
+			("test_remove_all", test_remove_all),
+			("test_remove_all_and_keep_capacity", test_remove_all_and_keep_capacity),
+			("test_remove_first", test_remove_first),
+			("test_remove_first2", test_remove_first2),
+			("test_remove_first_all", test_remove_first_all),
+			("test_remove_last", test_remove_last),
+			("test_remove_last2", test_remove_last2),
+			("test_remove_last_all", test_remove_last_all),
+			("test_remove_at_index", test_remove_at_index),
+			("test_remove_subrange", test_remove_subrange),
+			("test_producer", test_producer),
+			("test_producer_with_up_to_date_changes", test_producer_with_up_to_date_changes),
+			("test_producer_not_retaining_array", test_producer_not_retaining_array)
+		]
+	}
+}
+#endif
+
 // MARK: - Helpers
 
 func XCTAssertEqual<T>(