test/tools/llvm-ar/extract.test

## Test extract operation.
# XFAIL: system-darwin

RUN: rm -rf %t && mkdir -p %t/extracted/

# Extracting from an empty archive should not warn or error:
RUN: llvm-ar cr %t/empty.a
RUN: llvm-ar x %t/empty.a 2>&1 | count 0

RUN: echo filea > %t/a.txt
RUN: echo fileb > %t/b.txt
RUN: llvm-ar rc %t/archive.a %t/a.txt %t/b.txt

# Single member:
RUN: cd %t/extracted && llvm-ar x %t/archive.a a.txt
RUN: diff %t/a.txt %t/extracted/a.txt 

# All members:
RUN: rm %t/extracted/a.txt
RUN: cd %t/extracted && llvm-ar x %t/archive.a
RUN: diff %t/a.txt %t/extracted/a.txt 
RUN: diff %t/b.txt %t/extracted/b.txt