truizlop · July 24, 2018 12:22
diff --git a/PBT-Test3.swift b/PBT-Test3.swift
 func testConcatHasEmptyStringAsNeutralElement() {
    for _ in 0 ..< 100 {
        let a = randomString()
        let result = concat(first: a, second: "")
        XCTAssertEqual(result, a)
    }
 }
	func testConcatHasEmptyStringAsNeutralElement() {
	for _ in 0 ..< 100 {
	let a = randomString()
	let result = concat(first: a, second: "")
	XCTAssertEqual(result, a)
	}
	}