Xcode UI测试：lldb错误“仅适用于iOS 9.0或更高版本”

Question

Background

I have a fairly detailed (around 2000 lines of swift code) automation framework built with Xcode 7.3 and Swift for our iOS app.

Up till a recent point, I was able to use lldb to build my framework ie

• insert breakpoint and run code up till that point
• use po XCUIApplication().debugDescription and expr bla bla to build the logic
• repeat

---

Problem

Pretty much all of a sudden, I now encounter the following error whenever running anything inside lldb 's console:

(lldb) po XCUIApplication()
error: <EXPR>:2:1: error: 'XCUIApplication' is only available on iOS 9.0 or newer
XCUIApplication()
^
<EXPR>:2:1: note: add 'if #available' version check
XCUIApplication()
^
<EXPR>:2:1: note: add @available attribute to enclosing instance method
XCUIApplication()
^
<EXPR>:2:1: note: add @available attribute to enclosing extension
XCUIApplication()
^
<EXPR>:10:9: warning: initialization of variable '$__lldb_error_result' was never used; consider replacing with assignment to '_' or removing it
    var $__lldb_error_result = __lldb_tmp_error
    ~~~~^~~~~~~~~~~~~~~~~~~~

Notes

Googling and research has not gotten me anywhere significant. The one relevant thread I found was in the fastlane project . Unlike that comment, mine is a UI Test target. Also, the test target's "iOS Deployment Target" is set to iOS 9.2 (in case that helps).

• To the extent I remember, I haven't changed anything significantly in recent times.
• My device is (and has always been) iOS 9+.

What could be going wrong?

Update 20 May 2016

Some exploration based on the answer below: https://stackoverflow.com/a/37335950/682912

• The issue happens only on real devices. Simulators do not face this problem.
• On real device (iPhone 6S+, iOS 9.2.1), I did a full reset of Content and Settings. This did not fix the issue.

Answer 1

This is a bug in the debug agent installed on your device. These are bound to the iOS version, so it probably happened when you upgraded your device. Anyway, please file a bug with http://bugreporter.apple.com .

If I'm right about the problem, it should only happen when debugging to the device, not on the simulator. That might allow you a temporary workaround till the bug gets fixed.

Answer 2

Double check your .xcconfig with your test target or any other means that may set your IPHONEOS_DEPLOYMENT_TARGET to lower than 9.0. Since UITest is only available on iOS9.0 or later, change IPHONEOS_DEPLOYMENT_TARGET to 9.0+ should fix the issue.