NSString: add test for substring of unpaired surrogate

ianpartridge · ianpartridge · commit f1f684184501 · 2017-07-24T10:28:51.000+01:00
diff --git a/TestFoundation/TestNSString.swift b/TestFoundation/TestNSString.swift
@@ -1134,6 +1134,10 @@ class TestNSString : XCTestCase {
 
         let s5 = NSString(string: "\r\ncats😺")
         XCTAssertEqual(s5.substring(with: NSMakeRange(1,6)), "\ncats�")
+
+        // SR-3363
+        let s6 = NSString(string: "Beyonce\u{301} and Tay")
+        XCTAssertEqual(s6.substring(with: NSMakeRange(7, 9)), "\u{301} and Tay")
     }
 }
 

Original file line number	Diff line number	Diff line change
`@@ -1134,6 +1134,10 @@ class TestNSString : XCTestCase {`
`1134`	`1134`
`1135`	`1135`	`let s5 = NSString(string: "\r\ncats😺")`
`1136`	`1136`	`XCTAssertEqual(s5.substring(with: NSMakeRange(1,6)), "\ncats�")`
	`1137`	`+`
	`1138`	`+ // SR-3363`
	`1139`	`+ let s6 = NSString(string: "Beyonce\u{301} and Tay")`
	`1140`	`+ XCTAssertEqual(s6.substring(with: NSMakeRange(7, 9)), "\u{301} and Tay")`
`1137`	`1141`	`}`
`1138`	`1142`	`}`
`1139`	`1143`