#!/bin/sh

global test_description := ''Return value of diffs''

source ./test-lib.sh

test_expect_success 'setup' '
	echo "1 " >a &&
	git add . &&
	git commit -m zeroth &&
	echo 1 >a &&
	git add . &&
	git commit -m first &&
	echo 2 >b &&
	git add . &&
	git commit -a -m second
'

test_expect_success 'git diff --quiet -w  HEAD^^ HEAD^' '
	git diff --quiet -w HEAD^^ HEAD^
'

test_expect_success 'git diff --quiet HEAD^^ HEAD^' '
	test_must_fail git diff --quiet HEAD^^ HEAD^
'

test_expect_success 'git diff --quiet -w  HEAD^ HEAD' '
	test_must_fail git diff --quiet -w HEAD^ HEAD
'

test_expect_success 'git diff-tree HEAD^ HEAD' '
	test_expect_code 1 git diff-tree --exit-code HEAD^ HEAD
'
test_expect_success 'git diff-tree HEAD^ HEAD -- a' '
	git diff-tree --exit-code HEAD^ HEAD -- a
'
test_expect_success 'git diff-tree HEAD^ HEAD -- b' '
	test_expect_code 1 git diff-tree --exit-code HEAD^ HEAD -- b
'
test_expect_success 'echo HEAD | git diff-tree --stdin' '
	echo $(git rev-parse HEAD) | test_expect_code 1 git diff-tree --exit-code --stdin
'
test_expect_success 'git diff-tree HEAD HEAD' '
	git diff-tree --exit-code HEAD HEAD
'
test_expect_success 'git diff-files' '
	git diff-files --exit-code
'
test_expect_success 'git diff-index --cached HEAD' '
	git diff-index --exit-code --cached HEAD
'
test_expect_success 'git diff-index --cached HEAD^' '
	test_expect_code 1 git diff-index --exit-code --cached HEAD^
'
test_expect_success 'git diff-index --cached HEAD^' '
	echo text >>b &&
	echo 3 >c &&
	git add . &&
	test_expect_code 1 git diff-index --exit-code --cached HEAD^
'
test_expect_success 'git diff-tree -Stext HEAD^ HEAD -- b' '
	git commit -m "text in b" &&
	test_expect_code 1 git diff-tree -p --exit-code -Stext HEAD^ HEAD -- b
'
test_expect_success 'git diff-tree -Snot-found HEAD^ HEAD -- b' '
	git diff-tree -p --exit-code -Snot-found HEAD^ HEAD -- b
'
test_expect_success 'git diff-files' '
	echo 3 >>c &&
	test_expect_code 1 git diff-files --exit-code
'
test_expect_success 'git diff-index --cached HEAD' '
	git update-index c &&
	test_expect_code 1 git diff-index --exit-code --cached HEAD
'

test_expect_success '--check --exit-code returns 0 for no difference' '

	git diff --check --exit-code

'

test_expect_success '--check --exit-code returns 1 for a clean difference' '

	echo "good" > a &&
	test_expect_code 1 git diff --check --exit-code

'

test_expect_success '--check --exit-code returns 3 for a dirty difference' '

	echo "bad   " >> a &&
	test_expect_code 3 git diff --check --exit-code

'

test_expect_success '--check with --no-pager returns 2 for dirty difference' '

	test_expect_code 2 git --no-pager diff --check

'

test_expect_success 'check should test not just the last line' '
	echo "" >>a &&
	test_expect_code 2 git --no-pager diff --check

'

test_expect_success 'check detects leftover conflict markers' '
	git reset --hard &&
	git checkout HEAD^ &&
	echo binary >>b &&
	git commit -m "side" b &&
	test_must_fail git merge master &&
	git add b &&
	test_expect_code 2 git --no-pager diff --cached --check >test.out &&
	test 3 = $(grep "conflict marker" test.out | wc -l) &&
	git reset --hard
'

test_expect_success 'check honors conflict marker length' '
	git reset --hard &&
	echo ">>>>>>> boo" >>b &&
	echo "======" >>a &&
	git diff --check a &&
	test_expect_code 2 git diff --check b &&
	git reset --hard &&
	echo ">>>>>>>> boo" >>b &&
	echo "========" >>a &&
	git diff --check &&
	echo "b conflict-marker-size=8" >.gitattributes &&
	test_expect_code 2 git diff --check b &&
	git diff --check a &&
	git reset --hard
'

test_done
(CommandList
  children: [
    (Assignment
      keyword: Assign_None
      pairs: [
        (assign_pair
          lhs: (LhsName name:test_description)
          op: Equal
          rhs: {(SQ <"Return value of diffs">)}
          spids: [4]
        )
      ]
      spids: [4]
    )
    (C {(.)} {(./test-lib.sh)})
    (C {(test_expect_success)} {(SQ <setup>)} 
      {
        (SQ <"\n"> <"\techo \"1 \" >a &&\n"> <"\tgit add . &&\n"> <"\tgit commit -m zeroth &&\n"> 
          <"\techo 1 >a &&\n"> <"\tgit add . &&\n"> <"\tgit commit -m first &&\n"> <"\techo 2 >b &&\n"> <"\tgit add . &&\n"> 
          <"\tgit commit -a -m second\n">
        )
      }
    )
    (C {(test_expect_success)} {(SQ <"git diff --quiet -w  HEAD^^ HEAD^">)} 
      {(SQ <"\n"> <"\tgit diff --quiet -w HEAD^^ HEAD^\n">)}
    )
    (C {(test_expect_success)} {(SQ <"git diff --quiet HEAD^^ HEAD^">)} 
      {(SQ <"\n"> <"\ttest_must_fail git diff --quiet HEAD^^ HEAD^\n">)}
    )
    (C {(test_expect_success)} {(SQ <"git diff --quiet -w  HEAD^ HEAD">)} 
      {(SQ <"\n"> <"\ttest_must_fail git diff --quiet -w HEAD^ HEAD\n">)}
    )
    (C {(test_expect_success)} {(SQ <"git diff-tree HEAD^ HEAD">)} 
      {(SQ <"\n"> <"\ttest_expect_code 1 git diff-tree --exit-code HEAD^ HEAD\n">)}
    )
    (C {(test_expect_success)} {(SQ <"git diff-tree HEAD^ HEAD -- a">)} 
      {(SQ <"\n"> <"\tgit diff-tree --exit-code HEAD^ HEAD -- a\n">)}
    )
    (C {(test_expect_success)} {(SQ <"git diff-tree HEAD^ HEAD -- b">)} 
      {(SQ <"\n"> <"\ttest_expect_code 1 git diff-tree --exit-code HEAD^ HEAD -- b\n">)}
    )
    (C {(test_expect_success)} {(SQ <"echo HEAD | git diff-tree --stdin">)} 
      {
        (SQ <"\n"> 
          <"\techo $(git rev-parse HEAD) | test_expect_code 1 git diff-tree --exit-code --stdin\n">
        )
      }
    )
    (C {(test_expect_success)} {(SQ <"git diff-tree HEAD HEAD">)} 
      {(SQ <"\n"> <"\tgit diff-tree --exit-code HEAD HEAD\n">)}
    )
    (C {(test_expect_success)} {(SQ <"git diff-files">)} {(SQ <"\n"> <"\tgit diff-files --exit-code\n">)})
    (C {(test_expect_success)} {(SQ <"git diff-index --cached HEAD">)} 
      {(SQ <"\n"> <"\tgit diff-index --exit-code --cached HEAD\n">)}
    )
    (C {(test_expect_success)} {(SQ <"git diff-index --cached HEAD^">)} 
      {(SQ <"\n"> <"\ttest_expect_code 1 git diff-index --exit-code --cached HEAD^\n">)}
    )
    (C {(test_expect_success)} {(SQ <"git diff-index --cached HEAD^">)} 
      {
        (SQ <"\n"> <"\techo text >>b &&\n"> <"\techo 3 >c &&\n"> <"\tgit add . &&\n"> 
          <"\ttest_expect_code 1 git diff-index --exit-code --cached HEAD^\n">
        )
      }
    )
    (C {(test_expect_success)} {(SQ <"git diff-tree -Stext HEAD^ HEAD -- b">)} 
      {
        (SQ <"\n"> <"\tgit commit -m \"text in b\" &&\n"> 
          <"\ttest_expect_code 1 git diff-tree -p --exit-code -Stext HEAD^ HEAD -- b\n">
        )
      }
    )
    (C {(test_expect_success)} {(SQ <"git diff-tree -Snot-found HEAD^ HEAD -- b">)} 
      {(SQ <"\n"> <"\tgit diff-tree -p --exit-code -Snot-found HEAD^ HEAD -- b\n">)}
    )
    (C {(test_expect_success)} {(SQ <"git diff-files">)} 
      {(SQ <"\n"> <"\techo 3 >>c &&\n"> <"\ttest_expect_code 1 git diff-files --exit-code\n">)}
    )
    (C {(test_expect_success)} {(SQ <"git diff-index --cached HEAD">)} 
      {
        (SQ <"\n"> <"\tgit update-index c &&\n"> 
          <"\ttest_expect_code 1 git diff-index --exit-code --cached HEAD\n">
        )
      }
    )
    (C {(test_expect_success)} {(SQ <"--check --exit-code returns 0 for no difference">)} 
      {(SQ <"\n"> <"\n"> <"\tgit diff --check --exit-code\n"> <"\n">)}
    )
    (C {(test_expect_success)} {(SQ <"--check --exit-code returns 1 for a clean difference">)} 
      {
        (SQ <"\n"> <"\n"> <"\techo \"good\" > a &&\n"> 
          <"\ttest_expect_code 1 git diff --check --exit-code\n"> <"\n">
        )
      }
    )
    (C {(test_expect_success)} {(SQ <"--check --exit-code returns 3 for a dirty difference">)} 
      {
        (SQ <"\n"> <"\n"> <"\techo \"bad   \" >> a &&\n"> 
          <"\ttest_expect_code 3 git diff --check --exit-code\n"> <"\n">
        )
      }
    )
    (C {(test_expect_success)} {(SQ <"--check with --no-pager returns 2 for dirty difference">)} 
      {(SQ <"\n"> <"\n"> <"\ttest_expect_code 2 git --no-pager diff --check\n"> <"\n">)}
    )
    (C {(test_expect_success)} {(SQ <"check should test not just the last line">)} 
      {
        (SQ <"\n"> <"\techo \"\" >>a &&\n"> <"\ttest_expect_code 2 git --no-pager diff --check\n"> 
          <"\n">
        )
      }
    )
    (C {(test_expect_success)} {(SQ <"check detects leftover conflict markers">)} 
      {
        (SQ <"\n"> <"\tgit reset --hard &&\n"> <"\tgit checkout HEAD^ &&\n"> <"\techo binary >>b &&\n"> 
          <"\tgit commit -m \"side\" b &&\n"> <"\ttest_must_fail git merge master &&\n"> <"\tgit add b &&\n"> 
          <"\ttest_expect_code 2 git --no-pager diff --cached --check >test.out &&\n"> <"\ttest 3 = $(grep \"conflict marker\" test.out | wc -l) &&\n"> <"\tgit reset --hard\n">
        )
      }
    )
    (C {(test_expect_success)} {(SQ <"check honors conflict marker length">)} 
      {
        (SQ <"\n"> <"\tgit reset --hard &&\n"> <"\techo \">>>>>>> boo\" >>b &&\n"> 
          <"\techo \"======\" >>a &&\n"> <"\tgit diff --check a &&\n"> <"\ttest_expect_code 2 git diff --check b &&\n"> 
          <"\tgit reset --hard &&\n"> <"\techo \">>>>>>>> boo\" >>b &&\n"> <"\techo \"========\" >>a &&\n"> <"\tgit diff --check &&\n"> 
          <"\techo \"b conflict-marker-size=8\" >.gitattributes &&\n"> <"\ttest_expect_code 2 git diff --check b &&\n"> <"\tgit diff --check a &&\n"> <"\tgit reset --hard\n">
        )
      }
    )
    (C {(test_done)})
  ]
)