#!/bin/sh

test_description='git blame corner cases'
. ./test-lib.sh

pick_fc='s/^[0-9a-f^]* *\([^ ]*\) *(\([^ ]*\) .*/\1-\2/'

test_expect_success setup '

        echo A A A A A >one &&
        echo B B B B B >two &&
        echo C C C C C >tres &&
        echo ABC >mouse &&
        for i in 1 2 3 4 5 6 7 8 9
        do
                echo $i
        done >nine_lines &&
        for i in 1 2 3 4 5 6 7 8 9 a
        do
                echo $i
        done >ten_lines &&
        git add one two tres mouse nine_lines ten_lines &&
        test_tick &&
        GIT_AUTHOR_NAME=Initial git commit -m Initial &&

        cat one >uno &&
        mv two dos &&
        cat one >>tres &&
        echo DEF >>mouse
        git add uno dos tres mouse &&
        test_tick &&
        GIT_AUTHOR_NAME=Second git commit -a -m Second &&

        echo GHIJK >>mouse &&
        git add mouse &&
        test_tick &&
        GIT_AUTHOR_NAME=Third git commit -m Third &&

        cat mouse >cow &&
        git add cow &&
        test_tick &&
        GIT_AUTHOR_NAME=Fourth git commit -m Fourth &&

        {
                echo ABC
                echo DEF
                echo XXXX
                echo GHIJK
        } >cow &&
        git add cow &&
        test_tick &&
        GIT_AUTHOR_NAME=Fifth git commit -m Fifth
'

test_expect_success 'straight copy without -C' '

        git blame uno | grep Second

'

test_expect_success 'straight move without -C' '

        git blame dos | grep Initial

'

test_expect_success 'straight copy with -C' '

        git blame -C1 uno | grep Second

'

test_expect_success 'straight move with -C' '

        git blame -C1 dos | grep Initial

'

test_expect_success 'straight copy with -C -C' '

        git blame -C -C1 uno | grep Initial

'

test_expect_success 'straight move with -C -C' '

        git blame -C -C1 dos | grep Initial

'

test_expect_success 'append without -C' '

        git blame -L2 tres | grep Second

'

test_expect_success 'append with -C' '

        git blame -L2 -C1 tres | grep Second

'

test_expect_success 'append with -C -C' '

        git blame -L2 -C -C1 tres | grep Second

'

test_expect_success 'append with -C -C -C' '

        git blame -L2 -C -C -C1 tres | grep Initial

'

test_expect_success 'blame wholesale copy' '

        git blame -f -C -C1 HEAD^ -- cow | sed -e "$pick_fc" >current &&
        {
                echo mouse-Initial
                echo mouse-Second
                echo mouse-Third
        } >expected &&
        test_cmp expected current

'

test_expect_success 'blame wholesale copy and more' '

        git blame -f -C -C1 HEAD -- cow | sed -e "$pick_fc" >current &&
        {
                echo mouse-Initial
                echo mouse-Second
                echo cow-Fifth
                echo mouse-Third
        } >expected &&
        test_cmp expected current

'

test_expect_success 'blame path that used to be a directory' '
        mkdir path &&
        echo A A A A A >path/file &&
        echo B B B B B >path/elif &&
        git add path &&
        test_tick &&
        git commit -m "path was a directory" &&
        rm -fr path &&
        echo A A A A A >path &&
        git add path &&
        test_tick &&
        git commit -m "path is a regular file" &&
        git blame HEAD^.. -- path
'

test_expect_success 'blame to a commit with no author name' '
  TREE=`git rev-parse HEAD:`
  cat >badcommit <<EOF
tree $TREE
author <noname> 1234567890 +0000
committer David Reiss <dreiss@facebook.com> 1234567890 +0000

some message
EOF
  COMMIT=`git hash-object -t commit -w badcommit`
  git --no-pager blame $COMMIT -- uno >/dev/null
'

test_expect_success 'blame -L with invalid start' '
        test_must_fail git blame -L5 tres 2>errors &&
        grep "has only 2 lines" errors
'

test_expect_success 'blame -L with invalid end' '
        test_must_fail git blame -L1,5 tres 2>errors &&
        grep "has only 2 lines" errors
'

test_expect_success 'blame parses <end> part of -L' '
        git blame -L1,1 tres >out &&
        cat out &&
        test $(wc -l < out) -eq 1
'

test_expect_success 'indent of line numbers, nine lines' '
        git blame nine_lines >actual &&
        test $(grep -c "  " actual) = 0
'

test_expect_success 'indent of line numbers, ten lines' '
        git blame ten_lines >actual &&
        test $(grep -c "  " actual) = 9
'

test_expect_success 'blaming files with CRLF newlines' '
        git config core.autocrlf false &&
        printf "testcase\r\n" >crlffile &&
        git add crlffile &&
        git commit -m testcase &&
        git -c core.autocrlf=input blame crlffile >actual &&
        grep "A U Thor" actual
'

test_done