| 1 | #!/bin/sh |
| 2 | TEST_PREFIX="[read]" |
| 3 | . "$(cd "$(dirname "$0")" && pwd)/test_harness.sh" |
| 4 | |
| 5 | section "1. read basic" |
| 6 | compare_output "read from herestring" 'read VAR <<< "hello"; echo $VAR' |
| 7 | compare_output "read multiple vars" 'read A B C <<< "one two three"; echo "$A|$B|$C"' |
| 8 | compare_output "read excess into last var" 'read A B <<< "one two three four"; echo "$A|$B"' |
| 9 | compare_output "read single var gets all" 'read LINE <<< "hello world test"; echo "$LINE"' |
| 10 | compare_output "read with empty input" 'read VAR <<< ""; echo ">${VAR}<"' |
| 11 | |
| 12 | section "2. read flags" |
| 13 | compare_output "read -r preserves backslash" 'read -r VAR <<< "hello\\world"; echo "$VAR"' |
| 14 | compare_output "read without -r interprets backslash" 'read VAR <<< "hello\\\\world"; echo "$VAR"' |
| 15 | compare_output "read -a into array" 'read -a ARR <<< "a b c"; echo ${ARR[0]} ${ARR[1]} ${ARR[2]}' |
| 16 | compare_output "read -a array length" 'read -a ARR <<< "x y z"; echo ${#ARR[@]}' |
| 17 | |
| 18 | section "3. read with IFS" |
| 19 | compare_output "read with colon IFS" 'IFS=: read A B C <<< "x:y:z"; echo "$A|$B|$C"' |
| 20 | compare_output "read with comma IFS" 'IFS=, read A B C <<< "a,b,c"; echo "$A|$B|$C"' |
| 21 | compare_output "read with custom IFS excess" 'IFS=: read A B <<< "x:y:z"; echo "$A|$B"' |
| 22 | compare_output "read with space IFS default" 'read A B <<< " hello world "; echo ">$A<>$B<"' |
| 23 | |
| 24 | section "4. read from heredoc" |
| 25 | compare_output "read from heredoc" 'read VAR << EOF |
| 26 | hello |
| 27 | EOF |
| 28 | echo $VAR' |
| 29 | compare_output "read loop from heredoc" 'while read line; do echo "got:$line"; done << EOF |
| 30 | alpha |
| 31 | beta |
| 32 | EOF' |
| 33 | |
| 34 | section "5. read edge cases" |
| 35 | compare_exit "read with no input returns 1" 'echo -n "" | read VAR' |
| 36 | compare_output "read preserves whitespace with IFS empty" 'IFS= read line <<< " spaces "; echo ">$line<"' |
| 37 | compare_output "read -r with trailing backslash" 'read -r VAR <<< "end\\"; echo "$VAR"' |
| 38 | |
| 39 | print_summary |