596 lines
18 KiB
Bash
596 lines
18 KiB
Bash
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#
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# batslib.bash
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# ------------
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#
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# The Standard Library is a collection of test helpers intended to
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# simplify testing. It contains the following types of test helpers.
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#
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# - Assertions are functions that perform a test and output relevant
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# information on failure to help debugging. They return 1 on failure
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# and 0 otherwise.
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#
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# All output is formatted for readability using the functions of
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# `output.bash' and sent to the standard error.
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#
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source "${BATS_LIB}/batslib/output.bash"
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########################################################################
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# ASSERTIONS
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########################################################################
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# Fail and display a message. When no parameters are specified, the
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# message is read from the standard input. Other functions use this to
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# report failure.
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#
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# Globals:
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# none
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# Arguments:
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# $@ - [=STDIN] message
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# Returns:
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# 1 - always
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# Inputs:
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# STDIN - [=$@] message
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# Outputs:
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# STDERR - message
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fail() {
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(( $# == 0 )) && batslib_err || batslib_err "$@"
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return 1
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}
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# Fail and display details if the expression evaluates to false. Details
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# include the expression, `$status' and `$output'.
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#
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# NOTE: The expression must be a simple command. Compound commands, such
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# as `[[', can be used only when executed with `bash -c'.
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#
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# Globals:
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# status
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# output
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# Arguments:
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# $1 - expression
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# Returns:
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# 0 - expression evaluates to TRUE
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# 1 - otherwise
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# Outputs:
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# STDERR - details, on failure
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assert() {
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if ! "$@"; then
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{ local -ar single=(
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'expression' "$*"
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'status' "$status"
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)
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local -ar may_be_multi=(
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'output' "$output"
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)
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local -ir width="$( batslib_get_max_single_line_key_width \
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"${single[@]}" "${may_be_multi[@]}" )"
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batslib_print_kv_single "$width" "${single[@]}"
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batslib_print_kv_single_or_multi "$width" "${may_be_multi[@]}"
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} | batslib_decorate 'assertion failed' \
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| fail
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fi
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}
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# Fail and display details if the expected and actual values do not
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# equal. Details include both values.
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#
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# Globals:
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# none
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# Arguments:
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# $1 - actual value
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# $2 - expected value
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# Returns:
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# 0 - values equal
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# 1 - otherwise
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# Outputs:
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# STDERR - details, on failure
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assert_equal() {
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if [[ $1 != "$2" ]]; then
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batslib_print_kv_single_or_multi 8 \
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'expected' "$2" \
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'actual' "$1" \
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| batslib_decorate 'values do not equal' \
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| fail
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fi
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}
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# Fail and display details if `$status' is not 0. Details include
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# `$status' and `$output'.
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#
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# Globals:
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# status
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# output
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# Arguments:
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# none
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# Returns:
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# 0 - `$status' is 0
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# 1 - otherwise
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# Outputs:
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# STDERR - details, on failure
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assert_success() {
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if (( status != 0 )); then
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{ local -ir width=6
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batslib_print_kv_single "$width" 'status' "$status"
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batslib_print_kv_single_or_multi "$width" 'output' "$output"
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} | batslib_decorate 'command failed' \
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| fail
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fi
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}
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# Fail and display details if `$status' is 0. Details include `$output'.
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#
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# Optionally, when the expected status is specified, fail when it does
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# not equal `$status'. In this case, details include the expected and
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# actual status, and `$output'.
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#
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# Globals:
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# status
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# output
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# Arguments:
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# $1 - [opt] expected status
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# Returns:
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# 0 - `$status' is not 0, or
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# `$status' equals the expected status
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# 1 - otherwise
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# Outputs:
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# STDERR - details, on failure
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assert_failure() {
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(( $# > 0 )) && local -r expected="$1"
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if (( status == 0 )); then
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batslib_print_kv_single_or_multi 6 'output' "$output" \
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| batslib_decorate 'command succeeded, but it was expected to fail' \
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| fail
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elif (( $# > 0 )) && (( status != expected )); then
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{ local -ir width=8
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batslib_print_kv_single "$width" \
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'expected' "$expected" \
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'actual' "$status"
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batslib_print_kv_single_or_multi "$width" \
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'output' "$output"
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} | batslib_decorate 'command failed as expected, but status differs' \
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| fail
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fi
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}
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# Fail and display details if the expected does not match the actual
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# output or a fragment of it.
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#
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# By default, the entire output is matched. The assertion fails if the
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# expected output does not equal `$output'. Details include both values.
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#
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# When `-l <index>' is used, only the <index>-th line is matched. The
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# assertion fails if the expected line does not equal
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# `${lines[<index>}'. Details include the compared lines and <index>.
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#
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# When `-l' is used without the <index> argument, the output is searched
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# for the expected line. The expected line is matched against each line
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# in `${lines[@]}'. If no match is found the assertion fails. Details
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# include the expected line and `$output'.
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#
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# By default, literal matching is performed. Options `-p' and `-r'
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# enable partial (i.e. substring) and extended regular expression
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# matching, respectively. Specifying an invalid extended regular
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# expression with `-r' displays an error.
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#
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# Options `-p' and `-r' are mutually exclusive. When used
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# simultaneously, an error is displayed.
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#
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# Globals:
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# output
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# lines
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# Options:
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# -l <index> - match against the <index>-th element of `${lines[@]}'
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# -l - search `${lines[@]}' for the expected line
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# -p - partial matching
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# -r - extended regular expression matching
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# Arguments:
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# $1 - expected output
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# Returns:
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# 0 - expected matches the actual output
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# 1 - otherwise
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# Outputs:
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# STDERR - details, on failure
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# error message, on error
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assert_output() {
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local -i is_match_line=0
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local -i is_match_contained=0
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local -i is_mode_partial=0
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local -i is_mode_regex=0
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# Handle options.
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while (( $# > 0 )); do
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case "$1" in
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-l)
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if (( $# > 2 )) && [[ $2 =~ ^([0-9]|[1-9][0-9]+)$ ]]; then
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is_match_line=1
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local -ri idx="$2"
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shift
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else
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is_match_contained=1;
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fi
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shift
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;;
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-p) is_mode_partial=1; shift ;;
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-r) is_mode_regex=1; shift ;;
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--) break ;;
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*) break ;;
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esac
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done
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if (( is_match_line )) && (( is_match_contained )); then
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echo "\`-l' and \`-l <index>' are mutually exclusive" \
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| batslib_decorate 'ERROR: assert_output' \
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| fail
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return $?
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fi
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if (( is_mode_partial )) && (( is_mode_regex )); then
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echo "\`-p' and \`-r' are mutually exclusive" \
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| batslib_decorate 'ERROR: assert_output' \
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| fail
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return $?
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fi
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# Arguments.
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local -r expected="$1"
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if (( is_mode_regex == 1 )) && [[ '' =~ $expected ]] || (( $? == 2 )); then
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echo "Invalid extended regular expression: \`$expected'" \
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| batslib_decorate 'ERROR: assert_output' \
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| fail
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return $?
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fi
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# Matching.
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if (( is_match_contained )); then
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# Line contained in output.
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if (( is_mode_regex )); then
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local -i idx
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for (( idx = 0; idx < ${#lines[@]}; ++idx )); do
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[[ ${lines[$idx]} =~ $expected ]] && return 0
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done
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{ local -ar single=(
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'regex' "$expected"
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)
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local -ar may_be_multi=(
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'output' "$output"
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)
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local -ir width="$( batslib_get_max_single_line_key_width \
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"${single[@]}" "${may_be_multi[@]}" )"
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batslib_print_kv_single "$width" "${single[@]}"
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batslib_print_kv_single_or_multi "$width" "${may_be_multi[@]}"
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} | batslib_decorate 'no output line matches regular expression' \
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| fail
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elif (( is_mode_partial )); then
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local -i idx
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for (( idx = 0; idx < ${#lines[@]}; ++idx )); do
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[[ ${lines[$idx]} == *"$expected"* ]] && return 0
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done
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{ local -ar single=(
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'substring' "$expected"
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)
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local -ar may_be_multi=(
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'output' "$output"
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)
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local -ir width="$( batslib_get_max_single_line_key_width \
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"${single[@]}" "${may_be_multi[@]}" )"
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batslib_print_kv_single "$width" "${single[@]}"
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batslib_print_kv_single_or_multi "$width" "${may_be_multi[@]}"
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} | batslib_decorate 'no output line contains substring' \
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| fail
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else
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local -i idx
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for (( idx = 0; idx < ${#lines[@]}; ++idx )); do
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[[ ${lines[$idx]} == "$expected" ]] && return 0
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done
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{ local -ar single=(
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'line' "$expected"
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)
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local -ar may_be_multi=(
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'output' "$output"
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)
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local -ir width="$( batslib_get_max_single_line_key_width \
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"${single[@]}" "${may_be_multi[@]}" )"
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batslib_print_kv_single "$width" "${single[@]}"
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batslib_print_kv_single_or_multi "$width" "${may_be_multi[@]}"
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} | batslib_decorate 'output does not contain line' \
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| fail
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fi
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elif (( is_match_line )); then
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# Specific line.
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if (( is_mode_regex )); then
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if ! [[ ${lines[$idx]} =~ $expected ]]; then
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batslib_print_kv_single 5 \
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'index' "$idx" \
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'regex' "$expected" \
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'line' "${lines[$idx]}" \
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| batslib_decorate 'regular expression does not match line' \
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| fail
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fi
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elif (( is_mode_partial )); then
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if [[ ${lines[$idx]} != *"$expected"* ]]; then
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batslib_print_kv_single 9 \
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'index' "$idx" \
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'substring' "$expected" \
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'line' "${lines[$idx]}" \
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| batslib_decorate 'line does not contain substring' \
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| fail
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fi
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else
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if [[ ${lines[$idx]} != "$expected" ]]; then
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batslib_print_kv_single 8 \
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'index' "$idx" \
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'expected' "$expected" \
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'actual' "${lines[$idx]}" \
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| batslib_decorate 'line differs' \
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| fail
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fi
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fi
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else
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# Entire output.
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if (( is_mode_regex )); then
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if ! [[ $output =~ $expected ]]; then
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batslib_print_kv_single_or_multi 6 \
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'regex' "$expected" \
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'output' "$output" \
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| batslib_decorate 'regular expression does not match output' \
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| fail
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fi
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elif (( is_mode_partial )); then
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if [[ $output != *"$expected"* ]]; then
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batslib_print_kv_single_or_multi 9 \
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'substring' "$expected" \
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'output' "$output" \
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| batslib_decorate 'output does not contain substring' \
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| fail
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fi
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else
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if [[ $output != "$expected" ]]; then
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batslib_print_kv_single_or_multi 8 \
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'expected' "$expected" \
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'actual' "$output" \
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| batslib_decorate 'output differs' \
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| fail
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fi
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fi
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fi
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}
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# Fail and display details if the unexpected matches the actual output
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# or a fragment of it.
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#
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# By default, the entire output is matched. The assertion fails if the
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# unexpected output equals `$output'. Details include `$output'.
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#
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# When `-l <index>' is used, only the <index>-th line is matched. The
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# assertion fails if the unexpected line equals `${lines[<index>}'.
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# Details include the compared line and <index>.
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#
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# When `-l' is used without the <index> argument, the output is searched
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# for the unexpected line. The unexpected line is matched against each
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# line in `${lines[<index>]}'. If a match is found the assertion fails.
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# Details include the unexpected line, the index where it was found and
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# `$output' (with the unexpected line highlighted in it if `$output` is
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# longer than one line).
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#
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||
|
|
# By default, literal matching is performed. Options `-p' and `-r'
|
||
|
|
# enable partial (i.e. substring) and extended regular expression
|
||
|
|
# matching, respectively. On failure, the substring or the regular
|
||
|
|
# expression is added to the details (if not already displayed).
|
||
|
|
# Specifying an invalid extended regular expression with `-r' displays
|
||
|
|
# an error.
|
||
|
|
#
|
||
|
|
# Options `-p' and `-r' are mutually exclusive. When used
|
||
|
|
# simultaneously, an error is displayed.
|
||
|
|
#
|
||
|
|
# Globals:
|
||
|
|
# output
|
||
|
|
# lines
|
||
|
|
# Options:
|
||
|
|
# -l <index> - match against the <index>-th element of `${lines[@]}'
|
||
|
|
# -l - search `${lines[@]}' for the unexpected line
|
||
|
|
# -p - partial matching
|
||
|
|
# -r - extended regular expression matching
|
||
|
|
# Arguments:
|
||
|
|
# $1 - unexpected output
|
||
|
|
# Returns:
|
||
|
|
# 0 - unexpected matches the actual output
|
||
|
|
# 1 - otherwise
|
||
|
|
# Outputs:
|
||
|
|
# STDERR - details, on failure
|
||
|
|
# error message, on error
|
||
|
|
refute_output() {
|
||
|
|
local -i is_match_line=0
|
||
|
|
local -i is_match_contained=0
|
||
|
|
local -i is_mode_partial=0
|
||
|
|
local -i is_mode_regex=0
|
||
|
|
|
||
|
|
# Handle options.
|
||
|
|
while (( $# > 0 )); do
|
||
|
|
case "$1" in
|
||
|
|
-l)
|
||
|
|
if (( $# > 2 )) && [[ $2 =~ ^([0-9]|[1-9][0-9]+)$ ]]; then
|
||
|
|
is_match_line=1
|
||
|
|
local -ri idx="$2"
|
||
|
|
shift
|
||
|
|
else
|
||
|
|
is_match_contained=1;
|
||
|
|
fi
|
||
|
|
shift
|
||
|
|
;;
|
||
|
|
-L) is_match_contained=1; shift ;;
|
||
|
|
-p) is_mode_partial=1; shift ;;
|
||
|
|
-r) is_mode_regex=1; shift ;;
|
||
|
|
--) break ;;
|
||
|
|
*) break ;;
|
||
|
|
esac
|
||
|
|
done
|
||
|
|
|
||
|
|
if (( is_match_line )) && (( is_match_contained )); then
|
||
|
|
echo "\`-l' and \`-l <index>' are mutually exclusive" \
|
||
|
|
| batslib_decorate 'ERROR: refute_output' \
|
||
|
|
| fail
|
||
|
|
return $?
|
||
|
|
fi
|
||
|
|
|
||
|
|
if (( is_mode_partial )) && (( is_mode_regex )); then
|
||
|
|
echo "\`-p' and \`-r' are mutually exclusive" \
|
||
|
|
| batslib_decorate 'ERROR: refute_output' \
|
||
|
|
| fail
|
||
|
|
return $?
|
||
|
|
fi
|
||
|
|
|
||
|
|
# Arguments.
|
||
|
|
local -r unexpected="$1"
|
||
|
|
|
||
|
|
if (( is_mode_regex == 1 )) && [[ '' =~ $unexpected ]] || (( $? == 2 )); then
|
||
|
|
echo "Invalid extended regular expression: \`$unexpected'" \
|
||
|
|
| batslib_decorate 'ERROR: refute_output' \
|
||
|
|
| fail
|
||
|
|
return $?
|
||
|
|
fi
|
||
|
|
|
||
|
|
# Matching.
|
||
|
|
if (( is_match_contained )); then
|
||
|
|
# Line contained in output.
|
||
|
|
if (( is_mode_regex )); then
|
||
|
|
local -i idx
|
||
|
|
for (( idx = 0; idx < ${#lines[@]}; ++idx )); do
|
||
|
|
if [[ ${lines[$idx]} =~ $unexpected ]]; then
|
||
|
|
{ local -ar single=(
|
||
|
|
'regex' "$unexpected"
|
||
|
|
'index' "$idx"
|
||
|
|
)
|
||
|
|
local -a may_be_multi=(
|
||
|
|
'output' "$output"
|
||
|
|
)
|
||
|
|
local -ir width="$( batslib_get_max_single_line_key_width \
|
||
|
|
"${single[@]}" "${may_be_multi[@]}" )"
|
||
|
|
batslib_print_kv_single "$width" "${single[@]}"
|
||
|
|
if batslib_is_single_line "${may_be_multi[1]}"; then
|
||
|
|
batslib_print_kv_single "$width" "${may_be_multi[@]}"
|
||
|
|
else
|
||
|
|
may_be_multi[1]="$( printf '%s' "${may_be_multi[1]}" \
|
||
|
|
| batslib_prefix \
|
||
|
|
| batslib_mark '>' "$idx" )"
|
||
|
|
batslib_print_kv_multi "${may_be_multi[@]}"
|
||
|
|
fi
|
||
|
|
} | batslib_decorate 'no line should match the regular expression' \
|
||
|
|
| fail
|
||
|
|
return $?
|
||
|
|
fi
|
||
|
|
done
|
||
|
|
elif (( is_mode_partial )); then
|
||
|
|
local -i idx
|
||
|
|
for (( idx = 0; idx < ${#lines[@]}; ++idx )); do
|
||
|
|
if [[ ${lines[$idx]} == *"$unexpected"* ]]; then
|
||
|
|
{ local -ar single=(
|
||
|
|
'substring' "$unexpected"
|
||
|
|
'index' "$idx"
|
||
|
|
)
|
||
|
|
local -a may_be_multi=(
|
||
|
|
'output' "$output"
|
||
|
|
)
|
||
|
|
local -ir width="$( batslib_get_max_single_line_key_width \
|
||
|
|
"${single[@]}" "${may_be_multi[@]}" )"
|
||
|
|
batslib_print_kv_single "$width" "${single[@]}"
|
||
|
|
if batslib_is_single_line "${may_be_multi[1]}"; then
|
||
|
|
batslib_print_kv_single "$width" "${may_be_multi[@]}"
|
||
|
|
else
|
||
|
|
may_be_multi[1]="$( printf '%s' "${may_be_multi[1]}" \
|
||
|
|
| batslib_prefix \
|
||
|
|
| batslib_mark '>' "$idx" )"
|
||
|
|
batslib_print_kv_multi "${may_be_multi[@]}"
|
||
|
|
fi
|
||
|
|
} | batslib_decorate 'no line should contain substring' \
|
||
|
|
| fail
|
||
|
|
return $?
|
||
|
|
fi
|
||
|
|
done
|
||
|
|
else
|
||
|
|
local -i idx
|
||
|
|
for (( idx = 0; idx < ${#lines[@]}; ++idx )); do
|
||
|
|
if [[ ${lines[$idx]} == "$unexpected" ]]; then
|
||
|
|
{ local -ar single=(
|
||
|
|
'line' "$unexpected"
|
||
|
|
'index' "$idx"
|
||
|
|
)
|
||
|
|
local -a may_be_multi=(
|
||
|
|
'output' "$output"
|
||
|
|
)
|
||
|
|
local -ir width="$( batslib_get_max_single_line_key_width \
|
||
|
|
"${single[@]}" "${may_be_multi[@]}" )"
|
||
|
|
batslib_print_kv_single "$width" "${single[@]}"
|
||
|
|
if batslib_is_single_line "${may_be_multi[1]}"; then
|
||
|
|
batslib_print_kv_single "$width" "${may_be_multi[@]}"
|
||
|
|
else
|
||
|
|
may_be_multi[1]="$( printf '%s' "${may_be_multi[1]}" \
|
||
|
|
| batslib_prefix \
|
||
|
|
| batslib_mark '>' "$idx" )"
|
||
|
|
batslib_print_kv_multi "${may_be_multi[@]}"
|
||
|
|
fi
|
||
|
|
} | batslib_decorate 'line should not be in output' \
|
||
|
|
| fail
|
||
|
|
return $?
|
||
|
|
fi
|
||
|
|
done
|
||
|
|
fi
|
||
|
|
elif (( is_match_line )); then
|
||
|
|
# Specific line.
|
||
|
|
if (( is_mode_regex )); then
|
||
|
|
if [[ ${lines[$idx]} =~ $unexpected ]] || (( $? == 0 )); then
|
||
|
|
batslib_print_kv_single 5 \
|
||
|
|
'index' "$idx" \
|
||
|
|
'regex' "$unexpected" \
|
||
|
|
'line' "${lines[$idx]}" \
|
||
|
|
| batslib_decorate 'regular expression should not match line' \
|
||
|
|
| fail
|
||
|
|
fi
|
||
|
|
elif (( is_mode_partial )); then
|
||
|
|
if [[ ${lines[$idx]} == *"$unexpected"* ]]; then
|
||
|
|
batslib_print_kv_single 9 \
|
||
|
|
'index' "$idx" \
|
||
|
|
'substring' "$unexpected" \
|
||
|
|
'line' "${lines[$idx]}" \
|
||
|
|
| batslib_decorate 'line should not contain substring' \
|
||
|
|
| fail
|
||
|
|
fi
|
||
|
|
else
|
||
|
|
if [[ ${lines[$idx]} == "$unexpected" ]]; then
|
||
|
|
batslib_print_kv_single 5 \
|
||
|
|
'index' "$idx" \
|
||
|
|
'line' "${lines[$idx]}" \
|
||
|
|
| batslib_decorate 'line should differ' \
|
||
|
|
| fail
|
||
|
|
fi
|
||
|
|
fi
|
||
|
|
else
|
||
|
|
# Entire output.
|
||
|
|
if (( is_mode_regex )); then
|
||
|
|
if [[ $output =~ $unexpected ]] || (( $? == 0 )); then
|
||
|
|
batslib_print_kv_single_or_multi 6 \
|
||
|
|
'regex' "$unexpected" \
|
||
|
|
'output' "$output" \
|
||
|
|
| batslib_decorate 'regular expression should not match output' \
|
||
|
|
| fail
|
||
|
|
fi
|
||
|
|
elif (( is_mode_partial )); then
|
||
|
|
if [[ $output == *"$unexpected"* ]]; then
|
||
|
|
batslib_print_kv_single_or_multi 9 \
|
||
|
|
'substring' "$unexpected" \
|
||
|
|
'output' "$output" \
|
||
|
|
| batslib_decorate 'output should not contain substring' \
|
||
|
|
| fail
|
||
|
|
fi
|
||
|
|
else
|
||
|
|
if [[ $output == "$unexpected" ]]; then
|
||
|
|
batslib_print_kv_single_or_multi 6 \
|
||
|
|
'output' "$output" \
|
||
|
|
| batslib_decorate 'output equals, but it was expected to differ' \
|
||
|
|
| fail
|
||
|
|
fi
|
||
|
|
fi
|
||
|
|
fi
|
||
|
|
}
|