#!/bin/sh

test_description='tests for ref^{stuff}'

. ./test-lib.sh

test_expect_success 'setup' '
        echo blob >a-blob &&
        git tag -a -m blob blob-tag $(git hash-object -w a-blob) &&
        mkdir a-tree &&
        echo moreblobs >a-tree/another-blob &&
        git add . &&
        TREE_SHA1=$(git write-tree) &&
        git tag -a -m tree tree-tag "$TREE_SHA1" &&
        git commit -m Initial &&
        git tag -a -m commit commit-tag &&
        git branch ref &&
        git checkout master &&
        echo modified >>a-blob &&
        git add -u &&
        git commit -m Modified &&
        git branch modref &&
        echo changed! >>a-blob &&
        git add -u &&
        git commit -m !Exp &&
        git branch expref &&
        echo changed >>a-blob &&
        git add -u &&
        git commit -m Changed &&
        echo changed-again >>a-blob &&
        git add -u &&
        git commit -m Changed-again
'

test_expect_success 'ref^{non-existent}' '
        test_must_fail git rev-parse ref^{non-existent}
'

test_expect_success 'ref^{}' '
        git rev-parse ref >expected &&
        git rev-parse ref^{} >actual &&
        test_cmp expected actual &&
        git rev-parse commit-tag^{} >actual &&
        test_cmp expected actual
'

test_expect_success 'ref^{commit}' '
        git rev-parse ref >expected &&
        git rev-parse ref^{commit} >actual &&
        test_cmp expected actual &&
        git rev-parse commit-tag^{commit} >actual &&
        test_cmp expected actual &&
        test_must_fail git rev-parse tree-tag^{commit} &&
        test_must_fail git rev-parse blob-tag^{commit}
'

test_expect_success 'ref^{tree}' '
        echo $TREE_SHA1 >expected &&
        git rev-parse ref^{tree} >actual &&
        test_cmp expected actual &&
        git rev-parse commit-tag^{tree} >actual &&
        test_cmp expected actual &&
        git rev-parse tree-tag^{tree} >actual &&
        test_cmp expected actual &&
        test_must_fail git rev-parse blob-tag^{tree}
'

test_expect_success 'ref^{tag}' '
        test_must_fail git rev-parse HEAD^{tag} &&
        git rev-parse commit-tag >expected &&
        git rev-parse commit-tag^{tag} >actual &&
        test_cmp expected actual
'

test_expect_success 'ref^{/.}' '
        git rev-parse master >expected &&
        git rev-parse master^{/.} >actual &&
        test_cmp expected actual
'

test_expect_success 'ref^{/non-existent}' '
        test_must_fail git rev-parse master^{/non-existent}
'

test_expect_success 'ref^{/Initial}' '
        git rev-parse ref >expected &&
        git rev-parse master^{/Initial} >actual &&
        test_cmp expected actual
'

test_expect_success 'ref^{/!Exp}' '
        test_must_fail git rev-parse master^{/!Exp}
'

test_expect_success 'ref^{/!}' '
        test_must_fail git rev-parse master^{/!}
'

test_expect_success 'ref^{/!!Exp}' '
        git rev-parse expref >expected &&
        git rev-parse master^{/!!Exp} >actual &&
        test_cmp expected actual
'

test_expect_success 'ref^{/!-}' '
        test_must_fail git rev-parse master^{/!-}
'

test_expect_success 'ref^{/!-.}' '
        test_must_fail git rev-parse master^{/!-.}
'

test_expect_success 'ref^{/!-non-existent}' '
        git rev-parse master >expected &&
        git rev-parse master^{/!-non-existent} >actual &&
        test_cmp expected actual
'

test_expect_success 'ref^{/!-Changed}' '
        git rev-parse expref >expected &&
        git rev-parse master^{/!-Changed} >actual &&
        test_cmp expected actual
'

test_expect_success 'ref^{/!-!Exp}' '
        git rev-parse modref >expected &&
        git rev-parse expref^{/!-!Exp} >actual &&
        test_cmp expected actual
'

test_done