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#include "clar_libgit2.h"

#include "git2/sys/odb_backend.h"

typedef struct {

git_odb_backend base;

size_t position;

} fake_backend;

static git_odb_backend *new_backend(size_t position)

{

fake_backend *b;

b = git__calloc(1, sizeof(fake_backend));

if (b == NULL)

return NULL;

b->base.free = (void (*)(git_odb_backend *)) git__free;

b->base.version = GIT_ODB_BACKEND_VERSION;

b->position = position;

return (git_odb_backend *)b;

}

static void check_backend_sorting(git_odb *odb)

{

size_t i, max_i = git_odb_num_backends(odb);

fake_backend *internal;

for (i = 0; i < max_i; ++i) {

cl_git_pass(git_odb_get_backend((git_odb_backend **)&internal, odb, i));

cl_assert(internal != NULL);

cl_assert_equal_sz(i, internal->position);

}

}

static git_odb *_odb;

void test_odb_sorting__initialize(void)

{

cl_git_pass(git_odb_new(&_odb));

}

void test_odb_sorting__cleanup(void)

{

git_odb_free(_odb);

_odb = NULL;

}

void test_odb_sorting__basic_backends_sorting(void)

{

cl_git_pass(git_odb_add_backend(_odb, new_backend(0), 5));

cl_git_pass(git_odb_add_backend(_odb, new_backend(2), 3));

cl_git_pass(git_odb_add_backend(_odb, new_backend(1), 4));

cl_git_pass(git_odb_add_backend(_odb, new_backend(3), 1));

check_backend_sorting(_odb);

}

void test_odb_sorting__alternate_backends_sorting(void)

{

cl_git_pass(git_odb_add_backend(_odb, new_backend(1), 5));

cl_git_pass(git_odb_add_backend(_odb, new_backend(5), 3));

cl_git_pass(git_odb_add_backend(_odb, new_backend(3), 4));

cl_git_pass(git_odb_add_backend(_odb, new_backend(7), 1));

cl_git_pass(git_odb_add_alternate(_odb, new_backend(0), 5));

cl_git_pass(git_odb_add_alternate(_odb, new_backend(4), 3));

cl_git_pass(git_odb_add_alternate(_odb, new_backend(2), 4));

cl_git_pass(git_odb_add_alternate(_odb, new_backend(6), 1));

check_backend_sorting(_odb);

}