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|
#!/bin/sh
test_description="Test the svn importer's input handling routines.
These tests exercise the line_buffer library, but their real purpose
is to check the assumptions that library makes of the platform's input
routines. Processes engaged in bi-directional communication would
hang if fread or fgets is too greedy.
While at it, check that input of newlines and null bytes are handled
correctly.
"
. ./test-lib.sh
test -n "$GIT_REMOTE_SVN_TEST_BIG_FILES" && test_set_prereq EXPENSIVE
generate_tens_of_lines () {
tens=$1 &&
line=$2 &&
i=0 &&
while test $i -lt "$tens"
do
for j in a b c d e f g h i j
do
echo "$line"
done &&
: $((i = $i + 1)) ||
return
done
}
long_read_test () {
: each line is 10 bytes, including newline &&
line=abcdefghi &&
echo "$line" >expect &&
if ! test_declared_prereq PIPE
then
echo >&4 "long_read_test: need to declare PIPE prerequisite"
return 127
fi &&
tens_of_lines=$(($1 / 100 + 1)) &&
lines=$(($tens_of_lines * 10)) &&
readsize=$((($lines - 1) * 10 + 3)) &&
copysize=7 &&
rm -f input &&
mkfifo input &&
{
{
generate_tens_of_lines $tens_of_lines "$line" &&
sleep 100
} >input &
} &&
test-line-buffer input <<-EOF >output &&
read $readsize
copy $copysize
EOF
kill $! &&
test_line_count = $lines output &&
tail -n 1 <output >actual &&
test_cmp expect actual
}
test_expect_success 'setup: have pipes?' '
rm -f frob &&
if mkfifo frob
then
test_set_prereq PIPE
fi
'
test_expect_success 'hello world' '
echo HELLO >expect &&
test-line-buffer <<-\EOF >actual &&
read 6
HELLO
EOF
test_cmp expect actual
'
test_expect_success PIPE '0-length read, no input available' '
>expect &&
rm -f input &&
mkfifo input &&
{
sleep 100 >input &
} &&
test-line-buffer input <<-\EOF >actual &&
read 0
copy 0
EOF
kill $! &&
test_cmp expect actual
'
test_expect_success '0-length read, send along greeting' '
echo HELLO >expect &&
test-line-buffer <<-\EOF >actual &&
read 0
copy 6
HELLO
EOF
test_cmp expect actual
'
test_expect_success PIPE '1-byte read, no input available' '
printf "%s" ab >expect &&
rm -f input &&
mkfifo input &&
{
{
printf "%s" a &&
printf "%s" b &&
sleep 100
} >input &
} &&
test-line-buffer input <<-\EOF >actual &&
read 1
copy 1
EOF
kill $! &&
test_cmp expect actual
'
test_expect_success PIPE 'long read (around 8192 bytes)' '
long_read_test 8192
'
test_expect_success PIPE,EXPENSIVE 'longer read (around 65536 bytes)' '
long_read_test 65536
'
test_expect_success 'read from file descriptor' '
rm -f input &&
echo hello >expect &&
echo hello >input &&
echo copy 6 |
test-line-buffer "&4" 4<input >actual &&
test_cmp expect actual
'
test_expect_success 'buffer_read_string copes with null byte' '
>expect &&
q_to_nul <<-\EOF | test-line-buffer >actual &&
read 2
Q
EOF
test_cmp expect actual
'
test_expect_success 'skip, copy null byte' '
echo Q | q_to_nul >expect &&
q_to_nul <<-\EOF | test-line-buffer >actual &&
skip 2
Q
copy 2
Q
EOF
test_cmp expect actual
'
test_expect_success 'read null byte' '
echo ">QhelloQ" | q_to_nul >expect &&
q_to_nul <<-\EOF | test-line-buffer >actual &&
binary 8
QhelloQ
EOF
test_cmp expect actual
'
test_expect_success 'long reads are truncated' '
echo foo >expect &&
test-line-buffer <<-\EOF >actual &&
read 5
foo
EOF
test_cmp expect actual
'
test_expect_success 'long copies are truncated' '
printf "%s\n" "" foo >expect &&
test-line-buffer <<-\EOF >actual &&
read 1
copy 5
foo
EOF
test_cmp expect actual
'
test_expect_success 'long binary reads are truncated' '
echo ">foo" >expect &&
test-line-buffer <<-\EOF >actual &&
binary 5
foo
EOF
test_cmp expect actual
'
test_done
|
