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The `((x++))` syntax is shorthand for `let x++`. According to `help let`:
If the last ARG evaluates to 0, let returns 1; 0 is returned
otherwise.
Thus the exit status of the expression `x=0; let x++` is 1, since the post-increment `++` operator evaluates to the value of the variable before incrementing.
In Bash 4, this non-zero exit status properly triggers `set -e`'s error trap, but in Bash 3 it does not. That's why the tests were passing on OS X (Bash 3) but not Linux (Bash 4).
We can work around the problem by choosing an incrementation expression that never evaluates to 0, such as `+=` or the pre-increment `++` operator. For consistency and clarity, I've changed to `x+=1` everywhere.
Ref. #25, #27
158 lines
2.5 KiB
Bash
Executable File
158 lines
2.5 KiB
Bash
Executable File
#!/usr/bin/env bash
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set -e
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# Just stream the TAP output (sans extended syntax) if tput is missing
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command -v tput >/dev/null || exec grep -v "^begin "
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header_pattern='[0-9]+\.\.[0-9]+'
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IFS= read -r header
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if [[ "$header" =~ $header_pattern ]]; then
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count="${header:3}"
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index=0
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failures=0
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name=""
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count_column_width=$(( ${#count} * 2 + 2 ))
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else
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# If the first line isn't a TAP plan, print it and pass the rest through
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printf "%s\n" "$header"
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exec cat
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fi
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update_screen_width() {
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screen_width="$(tput cols)"
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count_column_left=$(( $screen_width - $count_column_width ))
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}
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trap update_screen_width WINCH
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update_screen_width
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begin() {
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go_to_column 0
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printf_with_truncation $(( $count_column_left - 1 )) " %s" "$name"
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clear_to_end_of_line
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go_to_column $count_column_left
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printf "%${#count}s/${count}" "$index"
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go_to_column 1
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}
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pass() {
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go_to_column 0
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printf " ✓ %s" "$name"
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advance
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}
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skip() {
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local reason="$1"
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[ -z "$reason" ] || reason=": $reason"
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go_to_column 0
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printf " - %s (skipped%s)" "$name" "$reason"
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advance
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}
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fail() {
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go_to_column 0
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set_color 1 bold
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printf " ✗ %s" "$name"
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advance
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}
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log() {
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set_color 1
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printf " %s\n" "$1"
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clear_color
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}
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summary() {
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printf "\n%d test%s, %d failure%s\n" \
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"$count" "$(plural "$count")" \
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"$failures" "$(plural "$failures")"
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}
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printf_with_truncation() {
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local width="$1"
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shift
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local string="$(printf "$@")"
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if [ "${#string}" -gt "$width" ]; then
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printf "%s..." "${string:0:$(( $width - 4 ))}"
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else
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printf "%s" "$string"
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fi
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}
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go_to_column() {
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local column="$1"
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printf "\x1B[%dG" $(( $column + 1 ))
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}
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clear_to_end_of_line() {
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printf "\x1B[K"
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}
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advance() {
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clear_to_end_of_line
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echo
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clear_color
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}
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set_color() {
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local color="$1"
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local weight="$2"
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printf "\x1B[%d;%dm" $(( 30 + $color )) "$( [ "$weight" = "bold" ] && echo 1 || echo 22 )"
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}
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clear_color() {
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printf "\x1B[0m"
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}
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plural() {
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[ "$1" -eq 1 ] || echo "s"
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}
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_buffer=""
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buffer() {
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_buffer="${_buffer}$("$@")"
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}
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flush() {
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printf "%s" "$_buffer"
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_buffer=""
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}
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finish() {
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flush
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printf "\n"
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}
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trap finish EXIT
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while IFS= read -r line; do
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case "$line" in
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"begin "* )
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let index+=1
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name="${line#* $index }"
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buffer begin
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flush
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;;
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"ok "* )
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skip_expr="ok $index # skip (\(([^)]*)\))?"
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if [[ "$line" =~ $skip_expr ]]; then
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buffer skip "${BASH_REMATCH[2]}"
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else
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buffer pass
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fi
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;;
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"not ok "* )
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let failures+=1
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buffer fail
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;;
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"# "* )
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buffer log "${line:2}"
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;;
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esac
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done
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buffer summary
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