test case emits error on unsupported OS for --netrc-file option

Author: sstadelman

Sources/Commands/SwiftTool.swift

@@ -377,10 +377,10 @@ public class SwiftTool {
             if #available(macOS 10.13, *) {
                 // ok, check succeeds
             } else {
-                diagnostics.emit(error: "--netrc-file option is only supported on macOS >=10.13")
+                diagnostics.emit(error: "'--netrc-file' option is only supported on macOS >=10.13")
             }
             #else
-            diagnostics.emit(error: "--netrc-file option is only supported on macOS >=10.13")
+            diagnostics.emit(error: "'--netrc-file' option is only supported on macOS >=10.13")
             #endif
         }
     }

Tests/CommandsTests/PackageToolTests.swift

@@ -46,7 +46,7 @@ final class PackageToolTests: XCTestCase {
         func verifyUnsupportedOSThrows() {
             do {
                 // should throw and be caught
-                try execute(["--netrc-file", "/Users/me/.hidden/.netrc"])
+                try execute(["update", "--netrc-file", "/Users/me/.hidden/.netrc"])
                 XCTFail()
             } catch {
                 XCTAssert(true)