test: fix a problem that the test fails at the windows7 command prompt
When testing with 'cmd.exe' of Windows 7, 'spawn cat ENOENT' error has occurred. Since the standard 'cmd.exe' has no 'cat' command, Instead will use the 'type' command
Checklist
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make -j4 test
(UNIX), orvcbuild test
(Windows) passes -
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