ref: 279f78a86cbff3f526fe1a1debd4d4f5766f96b0
dir: /test/T.close/
#!/bin/rc
echo T.close: test close built-in
sed 1000q /lib/ucd/UnicodeData.txt >foo.txt
rm -f foo
$awk '{ print >>"foo"; close("foo") }' foo.txt
diff foo.txt foo || echo 'BAD: T.close (1)'
ls -l >foo
tail -1 foo >foo1
$awk '{ print >"foo2"; close("foo2") }' foo
diff foo1 foo2 || echo 'BAD: T.close (2)'
echo 0 >foo1
$awk ' # non-accessible file
BEGIN { getline <"foo.txt"; print close("foo.txt"); }
' >foo2
diff foo1 foo2 || echo 'BAD: T.close (3)'
echo -1 >foo1
$awk ' # file not opened
BEGIN { print close("glotch"); }
' >foo2
diff foo1 foo2 || echo 'BAD: T.close (4)'
echo 0 >foo1
$awk ' # normal close
BEGIN { print "hello" > "foo"; print close("foo"); }
' >foo2
diff foo1 foo2 || echo 'BAD: T.close (5)'
echo 0 >foo1
$awk ' # normal close
BEGIN { print "hello" | "cat >foo"; print close("cat >foo"); }
' >foo2
diff foo1 foo2 || echo 'BAD: T.close (6)'