Add a test of infinite stream concatenation.

antitypical · May 8, 2015 · 6123b5f · 6123b5f
1 parent 57d3979
commit 6123b5f
Showing 1 changed file with 5 additions and 0 deletions.
diff --git a/StreamTests/StreamTests.swift b/StreamTests/StreamTests.swift
@@ -151,6 +151,11 @@ class StreamTests: XCTestCase {
 		XCTAssertEqual(reduce(concatenated, "0", { $0 + toString($1) }), "0123456")
 	}
 
+	func testConcatenationOfInfiniteStreams() {
+		let concatenated = fibonacci ++ fibonacci
+		XCTAssertEqual(concatenated.first ?? -1, 1)
+	}
+
 	func testFoldLeft() {
 		XCTAssertEqual(Stream([1, 2, 3]).foldLeft("0", { $0 + toString($1) }), "0123")
 	}