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git/t/t0040-parse-options.sh
Pierre Habouzit 3a9f0f41db parse-options: catch likely typo in presense of aggregated options.
If options are aggregated, and that the whole token is an exact
prefix of a long option that is longer than 2 letters, reject
it.  This is to prevent a common typo:

	$ git commit -amend

to get interpreted as "commit all with message 'end'".

The typo check isn't performed if there is no aggregation,
because the stuck form is the recommended one.  If we have `-o`
being a valid short option that takes an argument, and --option
a long one, then we _MUST_ accept -option as "'o' option with
argument 'ption'", which is our official recommended form.

Signed-off-by: Pierre Habouzit <madcoder@debian.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2008-01-26 10:53:31 -08:00

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#!/bin/sh
#
# Copyright (c) 2007 Johannes Schindelin
#
test_description='our own option parser'
. ./test-lib.sh
cat > expect.err << EOF
usage: test-parse-options <options>
-b, --boolean get a boolean
-i, --integer <n> get a integer
-j <n> get a integer, too
string options
-s, --string <string>
get a string
--string2 <str> get another string
--st <st> get another string (pervert ordering)
-o <str> get another string
EOF
test_expect_success 'test help' '
! test-parse-options -h > output 2> output.err &&
test ! -s output &&
git diff expect.err output.err
'
cat > expect << EOF
boolean: 2
integer: 1729
string: 123
EOF
test_expect_success 'short options' '
test-parse-options -s123 -b -i 1729 -b > output 2> output.err &&
git diff expect output &&
test ! -s output.err
'
cat > expect << EOF
boolean: 2
integer: 1729
string: 321
EOF
test_expect_success 'long options' '
test-parse-options --boolean --integer 1729 --boolean --string2=321 \
> output 2> output.err &&
test ! -s output.err &&
git diff expect output
'
cat > expect << EOF
boolean: 1
integer: 13
string: 123
arg 00: a1
arg 01: b1
arg 02: --boolean
EOF
test_expect_success 'intermingled arguments' '
test-parse-options a1 --string 123 b1 --boolean -j 13 -- --boolean \
> output 2> output.err &&
test ! -s output.err &&
git diff expect output
'
cat > expect << EOF
boolean: 0
integer: 2
string: (not set)
EOF
test_expect_success 'unambiguously abbreviated option' '
test-parse-options --int 2 --boolean --no-bo > output 2> output.err &&
test ! -s output.err &&
git diff expect output
'
test_expect_success 'unambiguously abbreviated option with "="' '
test-parse-options --int=2 > output 2> output.err &&
test ! -s output.err &&
git diff expect output
'
test_expect_failure 'ambiguously abbreviated option' '
test-parse-options --strin 123;
test $? != 129
'
cat > expect << EOF
boolean: 0
integer: 0
string: 123
EOF
test_expect_success 'non ambiguous option (after two options it abbreviates)' '
test-parse-options --st 123 > output 2> output.err &&
test ! -s output.err &&
git diff expect output
'
cat > expect.err << EOF
error: did you mean \`--boolean\` (with two dashes ?)
EOF
test_expect_success 'detect possible typos' '
! test-parse-options -boolean > output 2> output.err &&
test ! -s output &&
git diff expect.err output.err
'
test_done