| 1 | #!/bin/sh |
| 2 | TEST_PREFIX="[echo]" |
| 3 | . "$(cd "$(dirname "$0")" && pwd)/test_harness.sh" |
| 4 | |
| 5 | section "1. echo basic" |
| 6 | compare_output "echo basic string" 'echo hello world' |
| 7 | compare_output "echo with no arguments" 'echo' |
| 8 | compare_output "echo with multiple spaced args" 'echo a b c' |
| 9 | compare_output "echo single arg" 'echo hello' |
| 10 | compare_output "echo preserves quotes in args" 'echo "hello world"' |
| 11 | compare_output "echo multiple quoted args" 'echo "hello" "world"' |
| 12 | compare_output "echo with special characters" 'echo "hello*world"' |
| 13 | compare_output "echo empty string" 'echo ""' |
| 14 | |
| 15 | section "2. echo flags" |
| 16 | compare_output "echo -n suppresses newline" 'echo -n hello' |
| 17 | compare_output "echo -n with multiple args" 'echo -n hello world' |
| 18 | compare_output "echo -e interprets backslash-n" 'echo -e "hello\nworld"' |
| 19 | compare_output "echo -e interprets backslash-t" 'echo -e "hello\tworld"' |
| 20 | compare_output "echo -e interprets double backslash" 'echo -e "back\\\\slash"' |
| 21 | compare_output "echo -e interprets backslash-a and backslash-b" 'echo -e "x\b\ay"' |
| 22 | compare_output "echo -E disables escape interpretation" 'echo -E "hello\nworld"' |
| 23 | compare_output "echo -en combines flags" 'echo -en "hello\nworld"' |
| 24 | compare_output "echo -ne combines flags reversed" 'echo -ne "hello\tworld"' |
| 25 | |
| 26 | section "3. echo edge cases" |
| 27 | compare_output "echo dash-dash is literal" 'echo -- hello' |
| 28 | compare_output "echo treats unknown flag as text" 'echo -z hello' |
| 29 | compare_output "echo -e with \\c truncates" 'echo -e "hello\cworld"' |
| 30 | compare_output "echo -e with \\0NNN octal" 'echo -e "\0101"' |
| 31 | compare_output "echo -e with \\xNN hex" 'echo -e "\x41"' |
| 32 | compare_output "echo preserves trailing spaces in quotes" 'echo "hello "' |
| 33 | |
| 34 | print_summary |