我正在尝试在Powershell中使用split和regexes解析一些日志

这是我的代码：

$string = "Starting ChromeDriver 78.0.3904.70Please protect ports used by ChromeDriver and related test frameworks to prevent access by malicious code. Test 229: Passed Test 260: Failed. Error message: Status: Test case failed.  Steps: Navigate to: PurchReqTableListPage (purchreqpreparedbyme) Use the Quick Filter to find records. For example,filter on the Purchase requisition fION()</StackTrace> </Error>   Playback results: Tests: 2 Passed: 1 Failed: 1"

$string -Split '(Test (\d)+:)'

结果：

Starting ChromeDriver 78.0.3904.70Please protect ports used by ChromeDriver and related test frameworks to prevent access by malicious code.
Test 229:
9
 Passed
Test 260:
0
 Failed. Error message: Status: Test case failed.  Steps: Navigate to: PurchReqTableListPage (purchreqpreparedbyme) Use the Quick Filter to find records. For example,filter on the Purchase requisition fION()</StackTrace> </Error>   Playback results: Tests: 2 Passed: 1 Failed: 1

预期结果：

Starting ChromeDriver 78.0.3904.70Please protect ports used by ChromeDriver and related test frameworks to prevent access by malicious code.
Test 229:
 Passed
Test 260:
 Failed. Error message: Status: Test case failed.  Steps: Navigate to: PurchReqTableListPage (purchreqpreparedbyme) Use the Quick Filter to find records. For example,filter on the Purchase requisition fION()</StackTrace> </Error>   Playback results: Tests: 2 Passed: 1 Failed: 1

在此站点上：https://regexr.com/3c0lf我尝试了此正则表达式，捕获的组为：Test 260:和Test 229:（正是我想要的）

我不知道0和9的来源。

非常感谢