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A basic bash port of a Test::More/Test::Builder-style TAP-compliant test library.

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Bash-TAP

Bash-TAP allows you to perform TAP-compliant tests within bash using a similar test syntax to Perl's Test::More and Test::Builder, suitable to run with prove or any other TAP-consuming test harness.

For more information about TAP (the Test Anything Protocol) visit: http://testanything.org/

Installation and Usage

  1. Install the bash-tap files somewhere convenient for you. The default location of ../../bash-tap relative to your test files is the easiest zero-conf way, but you can set the $BASH_TAP_ROOT environment variable if you want to install elsewhere.
  2. If you're writing tests then copy bash-tap-bootstrap into your tests dir and source it inside your tests with:
. $(dirname $0)/bash-tap-bootstrap
  1. Run your tests with prove my_test_dir or your favourite TAP-consuming test harness, or run them manually as a script if you just want to see the raw TAP output.

Example test file

Here's example test file 01_read_rows_from_key_value_lines.t from https://github.com/illusori/bash-snippets

#!/bin/bash

. $(dirname $0)/bash-tap-bootstrap
. $(dirname $0)/../read_rows_from_key_value_lines

columns_per_row=6
max_rows_per_rowset=3
total_rowsets=2

plan tests $(((columns_per_row * max_rows_per_rowset * total_rowsets) + total_rowsets))

#  Test data, resultset 1
results1="artist Assemblage 23
track Naked (God Module RMX)
album Addendum
year 2001
rating 80
tracktime 5:22
artist Ayria
track Sapphire
album Debris
year
rating 100
tracktime 6:14
artist Apoptygma Berzerk
track Kathy's Song
album Welcome To Earth \"Extra bit for testing\"
year
rating 100
tracktime 6:35"

#  Test data, resultset 2
results2="artist Colony 5
track The Bottle
album Lifeline
year
rating 80
tracktime 4:34"

output=$(_read_rows_from_key_value_lines "track" "$results1" 2>&1)
is "$output" "" "Read of rowset 1 should produce no output"
#  Since $() runs in a subshell, we need to run it "for real" now
_read_rows_from_key_value_lines "track" "$results1" &>/dev/null

#  Track 1
is "${track_artist[0]}" "Assemblage 23" "rowset 1 track 1 artist"
is "${track_track[0]}" "Naked (God Module RMX)" "rowset 1 track 1 track"
is "${track_album[0]}" "Addendum" "rowset 1 track 1 album"
is "${track_year[0]}" "2001" "rowset 1 track 1 year"
is "${track_rating[0]}" "80" "rowset 1 track 1 rating"
is "${track_tracktime[0]}" "5:22" "rowset 1 track 1 tracktime"

#  Track 2
is "${track_artist[1]}" "Ayria" "rowset 1 track 2 artist"
is "${track_track[1]}" "Sapphire" "rowset 1 track 2 track"
is "${track_album[1]}" "Debris" "rowset 1 track 2 album"
is "${track_year[1]}" "" "rowset 1 track 2 year"
is "${track_rating[1]}" "100" "rowset 1 track 2 rating"
is "${track_tracktime[1]}" "6:14" "rowset 1 track 2 tracktime"

#  Track 3
is "${track_artist[2]}" "Apoptygma Berzerk" "rowset 1 track 3 artist"
is "${track_track[2]}" "Kathy's Song" "rowset 1 track 3 track"
is "${track_album[2]}" "Welcome To Earth \"Extra bit for testing\"" "rowset 1 track 3 album"
is "${track_year[2]}" "" "rowset 1 track 3 year"
is "${track_rating[2]}" "100" "rowset 1 track 3 rating"
is "${track_tracktime[2]}" "6:35" "rowset 1 track 3 tracktime"

output=$(_read_rows_from_key_value_lines "track" "$results2" 2>&1)
is "$output" "" "Read of rowset 2 should produce no output"
#  Since $() runs in a subshell, we need to run it "for real now
_read_rows_from_key_value_lines "track" "$results2" &>/dev/null

#  Track 1
is "${track_artist[0]}" "Colony 5" "rowset 2 track 1 artist"
is "${track_track[0]}" "The Bottle" "rowset 2 track 1 track"
is "${track_album[0]}" "Lifeline" "rowset 2 track 1 album"
is "${track_year[0]}" "" "rowset 2 track 1 year"
is "${track_rating[0]}" "80" "rowset 2 track 1 rating"
is "${track_tracktime[0]}" "4:34" "rowset 2 track 1 tracktime"

#  Track 2
is "${track_artist[1]}" "" "rowset 2 track 2 artist"
is "${track_track[1]}" "" "rowset 2 track 2 track"
is "${track_album[1]}" "" "rowset 2 track 2 album"
is "${track_year[1]}" "" "rowset 2 track 2 year"
is "${track_rating[1]}" "" "rowset 2 track 2 rating"
is "${track_tracktime[1]}" "" "rowset 2 track 2 tracktime"

#  Track 3
is "${track_artist[2]}" "" "rowset 2 track 3 artist"
is "${track_track[2]}" "" "rowset 2 track 3 track"
is "${track_album[2]}" "" "rowset 2 track 3 album"
is "${track_year[2]}" "" "rowset 2 track 3 year"
is "${track_rating[2]}" "" "rowset 2 track 3 rating"
is "${track_tracktime[2]}" "" "rowset 2 track 3 tracktime"

Running this gives output:

$ prove ~/projects/bash-snippets/t
/Users/illusori/projects/bash-snippets/t/01_read_rows_from_key_value_lines.t .. ok
All tests successful.
Files=1, Tests=38,  0 wallclock secs ( 0.04 usr  0.00 sys +  0.04 cusr  0.02 csys =  0.10 CPU)
Result: PASS

Or the verbose output:

$ prove -v ~/projects/bash-snippets/t
/Users/illusori/projects/bash-snippets/t/01_read_rows_from_key_value_lines.t .. 
1..38
ok 1 - Read of rowset 1 should produce no output
ok 2 - rowset 1 track 1 artist
ok 3 - rowset 1 track 1 track
ok 4 - rowset 1 track 1 album
ok 5 - rowset 1 track 1 year
ok 6 - rowset 1 track 1 rating
ok 7 - rowset 1 track 1 tracktime
ok 8 - rowset 1 track 2 artist
ok 9 - rowset 1 track 2 track
ok 10 - rowset 1 track 2 album
ok 11 - rowset 1 track 2 year
ok 12 - rowset 1 track 2 rating
ok 13 - rowset 1 track 2 tracktime
ok 14 - rowset 1 track 3 artist
ok 15 - rowset 1 track 3 track
ok 16 - rowset 1 track 3 album
ok 17 - rowset 1 track 3 year
ok 18 - rowset 1 track 3 rating
ok 19 - rowset 1 track 3 tracktime
ok 20 - Read of rowset 2 should produce no output
ok 21 - rowset 2 track 1 artist
ok 22 - rowset 2 track 1 track
ok 23 - rowset 2 track 1 album
ok 24 - rowset 2 track 1 year
ok 25 - rowset 2 track 1 rating
ok 26 - rowset 2 track 1 tracktime
ok 27 - rowset 2 track 2 artist
ok 28 - rowset 2 track 2 track
ok 29 - rowset 2 track 2 album
ok 30 - rowset 2 track 2 year
ok 31 - rowset 2 track 2 rating
ok 32 - rowset 2 track 2 tracktime
ok 33 - rowset 2 track 3 artist
ok 34 - rowset 2 track 3 track
ok 35 - rowset 2 track 3 album
ok 36 - rowset 2 track 3 year
ok 37 - rowset 2 track 3 rating
ok 38 - rowset 2 track 3 tracktime
ok
All tests successful.
Files=1, Tests=38,  0 wallclock secs ( 0.04 usr  0.01 sys +  0.04 cusr  0.02 csys =  0.11 CPU)
Result: PASS

Mocking with bash-tap-mock

Also included in bash-tap is a simple function mocking framework bash-tap-mock, it lets you mock commands and functions with mock_command and restore_mocked_command.

If you particularly care to only mock functions rather than commands (a good safeguard against typos), use mock_function and restore_mocked_function, which have some extended error checking ensuring the function you're mocking exists in the first place.

An example from https://github.com/illusori/bash-itunes is clearer:

#!/bin/bash

. $(dirname $0)/bash-tap-bootstrap
. "$BASH_TAP_ROOT/bash-tap-mock"
. $(dirname $0)/../itunes

plan tests 4

sent_command=''
function mock_osascript() {
    sent_command="$*"
    restore_mocked_function "_osascript"
}
mock_function "_osascript" "mock_osascript"

start_output_capture
_dispatch "stop"
finish_output_capture stdout stderr

like "$sent_command" 'stop' "sent command should contain 'stop'"
like "$sent_command" 'tell application "iTunes"' "sent command should contain 'tell application \"iTunes\"'"

is "$stdout" "Stopping iTunes." "stdout should tell user what happened"
is "$stderr" "" "stderr should be empty"

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A basic bash port of a Test::More/Test::Builder-style TAP-compliant test library.

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