thodg/libgit2/tests/index/tests.c

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• Hash : bfa1f022
  Author :
  Date : 2018-06-22T19:17:08
  

  settings: optional unsaved index safety Add the `GIT_OPT_ENABLE_UNSAVED_INDEX_SAFETY` option, which will cause commands that reload the on-disk index to fail if the current `git_index` has changed that have not been saved. This will prevent users from - for example - adding a file to the index then calling a function like `git_checkout` and having that file be silently removed from the index since it was re-read from disk. Now calls that would re-read the index will fail if the index is "dirty", meaning changes have been made to it but have not been written. Users can either `git_index_read` to discard those changes explicitly, or `git_index_write` to write them.

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• tests/index/tests.c

• #include "clar_libgit2.h"
  #include "index.h"
  
  static const size_t index_entry_count = 109;
  static const size_t index_entry_count_2 = 1437;
  #define TEST_INDEX_PATH cl_fixture("testrepo.git/index")
  #define TEST_INDEX2_PATH cl_fixture("gitgit.index")
  #define TEST_INDEXBIG_PATH cl_fixture("big.index")
  #define TEST_INDEXBAD_PATH cl_fixture("bad.index")
  
  
  /* Suite data */
  struct test_entry {
     size_t index;
     char path[128];
     git_off_t file_size;
     git_time_t mtime;
  };
  
  static struct test_entry test_entries[] = {
     {4, "Makefile", 5064, 0x4C3F7F33},
     {62, "tests/Makefile", 2631, 0x4C3F7F33},
     {36, "src/index.c", 10014, 0x4C43368D},
     {6, "git.git-authors", 2709, 0x4C3F7F33},
     {48, "src/revobject.h", 1448, 0x4C3F7FE2}
  };
  
  /* Helpers */
  static void copy_file(const char *src, const char *dst)
  {
  	git_buf source_buf = GIT_BUF_INIT;
  	git_file dst_fd;
  
  	cl_git_pass(git_futils_readbuffer(&source_buf, src));
  
  	dst_fd = git_futils_creat_withpath(dst, 0777, 0666); /* -V536 */
  	if (dst_fd < 0)
  		goto cleanup;
  
  	cl_git_pass(p_write(dst_fd, source_buf.ptr, source_buf.size));
  
  cleanup:
  	git_buf_dispose(&source_buf);
  	p_close(dst_fd);
  }
  
  static void files_are_equal(const char *a, const char *b)
  {
  	git_buf buf_a = GIT_BUF_INIT;
  	git_buf buf_b = GIT_BUF_INIT;
  	int pass;
  
  	if (git_futils_readbuffer(&buf_a, a) < 0)
  		cl_assert(0);
  
  	if (git_futils_readbuffer(&buf_b, b) < 0) {
  		git_buf_dispose(&buf_a);
  		cl_assert(0);
  	}
  
  	pass = (buf_a.size == buf_b.size && !memcmp(buf_a.ptr, buf_b.ptr, buf_a.size));
  
  	git_buf_dispose(&buf_a);
  	git_buf_dispose(&buf_b);
  
  	cl_assert(pass);
  }
  
  
  /* Fixture setup and teardown */
  void test_index_tests__initialize(void)
  {
  }
  
  void test_index_tests__cleanup(void)
  {
  	cl_git_pass(git_libgit2_opts(GIT_OPT_ENABLE_UNSAVED_INDEX_SAFETY, 0));
  }
  
  void test_index_tests__empty_index(void)
  {
     git_index *index;
  
     cl_git_pass(git_index_open(&index, "in-memory-index"));
     cl_assert(index->on_disk == 0);
  
     cl_assert(git_index_entrycount(index) == 0);
     cl_assert(git_vector_is_sorted(&index->entries));
  
     git_index_free(index);
  }
  
  void test_index_tests__default_test_index(void)
  {
     git_index *index;
     unsigned int i;
     git_index_entry **entries;
  
     cl_git_pass(git_index_open(&index, TEST_INDEX_PATH));
     cl_assert(index->on_disk);
  
     cl_assert(git_index_entrycount(index) == index_entry_count);
     cl_assert(git_vector_is_sorted(&index->entries));
  
     entries = (git_index_entry **)index->entries.contents;
  
     for (i = 0; i < ARRAY_SIZE(test_entries); ++i) {
  		git_index_entry *e = entries[test_entries[i].index];
  
  		cl_assert_equal_s(e->path, test_entries[i].path);
  		cl_assert_equal_i(e->mtime.seconds, test_entries[i].mtime);
  		cl_assert_equal_i(e->file_size, test_entries[i].file_size);
     }
  
     git_index_free(index);
  }
  
  void test_index_tests__gitgit_index(void)
  {
     git_index *index;
  
     cl_git_pass(git_index_open(&index, TEST_INDEX2_PATH));
     cl_assert(index->on_disk);
  
     cl_assert(git_index_entrycount(index) == index_entry_count_2);
     cl_assert(git_vector_is_sorted(&index->entries));
     cl_assert(index->tree != NULL);
  
     git_index_free(index);
  }
  
  void test_index_tests__find_in_existing(void)
  {
     git_index *index;
     unsigned int i;
  
     cl_git_pass(git_index_open(&index, TEST_INDEX_PATH));
  
     for (i = 0; i < ARRAY_SIZE(test_entries); ++i) {
  		size_t idx;
  
  		cl_assert(!git_index_find(&idx, index, test_entries[i].path));
  		cl_assert(idx == test_entries[i].index);
     }
  
     git_index_free(index);
  }
  
  void test_index_tests__find_in_empty(void)
  {
     git_index *index;
     unsigned int i;
  
     cl_git_pass(git_index_open(&index, "fake-index"));
  
     for (i = 0; i < ARRAY_SIZE(test_entries); ++i) {
  		cl_assert(GIT_ENOTFOUND == git_index_find(NULL, index, test_entries[i].path));
     }
  
     git_index_free(index);
  }
  
  void test_index_tests__find_prefix(void)
  {
     git_index *index;
     const git_index_entry *entry;
     size_t pos;
  
     cl_git_pass(git_index_open(&index, TEST_INDEX_PATH));
  
     cl_git_pass(git_index_find_prefix(&pos, index, "src"));
     entry = git_index_get_byindex(index, pos);
     cl_assert(git__strcmp(entry->path, "src/block-sha1/sha1.c") == 0);
  
     cl_git_pass(git_index_find_prefix(&pos, index, "src/co"));
     entry = git_index_get_byindex(index, pos);
     cl_assert(git__strcmp(entry->path, "src/commit.c") == 0);
  
     cl_assert(GIT_ENOTFOUND == git_index_find_prefix(NULL, index, "blah"));
  
     git_index_free(index);
  }
  
  void test_index_tests__write(void)
  {
     git_index *index;
  
     copy_file(TEST_INDEXBIG_PATH, "index_rewrite");
  
     cl_git_pass(git_index_open(&index, "index_rewrite"));
     cl_assert(index->on_disk);
  
     cl_git_pass(git_index_write(index));
     files_are_equal(TEST_INDEXBIG_PATH, "index_rewrite");
  
     git_index_free(index);
  
     p_unlink("index_rewrite");
  }
  
  void test_index_tests__sort0(void)
  {
  	/* sort the entires in an index */
  
     /*
     * TODO: This no longer applies:
     * index sorting in Git uses some specific changes to the way
     * directories are sorted.
     *
     * We need to specificially check for this by creating a new
     * index, adding entries in random order and then
     * checking for consistency
     */
  }
  
  void test_index_tests__sort1(void)
  {
     /* sort the entires in an empty index */
     git_index *index;
  
     cl_git_pass(git_index_open(&index, "fake-index"));
  
     /* FIXME: this test is slightly dumb */
     cl_assert(git_vector_is_sorted(&index->entries));
  
     git_index_free(index);
  }
  
  static void cleanup_myrepo(void *opaque)
  {
  	GIT_UNUSED(opaque);
  	cl_fixture_cleanup("myrepo");
  }
  
  void test_index_tests__add(void)
  {
  	git_index *index;
  	git_filebuf file = GIT_FILEBUF_INIT;
  	git_repository *repo;
  	const git_index_entry *entry;
  	git_oid id1;
  
  	cl_set_cleanup(&cleanup_myrepo, NULL);
  
  	/* Intialize a new repository */
  	cl_git_pass(git_repository_init(&repo, "./myrepo", 0));
  
  	/* Ensure we're the only guy in the room */
  	cl_git_pass(git_repository_index(&index, repo));
  	cl_assert(git_index_entrycount(index) == 0);
  
  	/* Create a new file in the working directory */
  	cl_git_pass(git_futils_mkpath2file("myrepo/test.txt", 0777));
  	cl_git_pass(git_filebuf_open(&file, "myrepo/test.txt", 0, 0666));
  	cl_git_pass(git_filebuf_write(&file, "hey there\n", 10));
  	cl_git_pass(git_filebuf_commit(&file));
  
  	/* Store the expected hash of the file/blob
  	 * This has been generated by executing the following
  	 * $ echo "hey there" | git hash-object --stdin
  	 */
  	cl_git_pass(git_oid_fromstr(&id1, "a8233120f6ad708f843d861ce2b7228ec4e3dec6"));
  
  	/* Add the new file to the index */
  	cl_git_pass(git_index_add_bypath(index, "test.txt"));
  
  	/* Wow... it worked! */
  	cl_assert(git_index_entrycount(index) == 1);
  	entry = git_index_get_byindex(index, 0);
  
  	/* And the built-in hashing mechanism worked as expected */
  	cl_assert_equal_oid(&id1, &entry->id);
  
  	/* Test access by path instead of index */
  	cl_assert((entry = git_index_get_bypath(index, "test.txt", 0)) != NULL);
  	cl_assert_equal_oid(&id1, &entry->id);
  
  	git_index_free(index);
  	git_repository_free(repo);
  }
  
  void test_index_tests__add_frombuffer(void)
  {
  	git_index *index;
  	git_repository *repo;
          git_index_entry entry;
  	const git_index_entry *returned_entry;
  
  	git_oid id1;
  	git_blob *blob;
  
  	const char *content = "hey there\n";
  
  	cl_set_cleanup(&cleanup_myrepo, NULL);
  
  	/* Intialize a new repository */
  	cl_git_pass(git_repository_init(&repo, "./myrepo", 0));
  
  	/* Ensure we're the only guy in the room */
  	cl_git_pass(git_repository_index(&index, repo));
  	cl_assert(git_index_entrycount(index) == 0);
  
  	/* Store the expected hash of the file/blob
  	 * This has been generated by executing the following
  	 * $ echo "hey there" | git hash-object --stdin
  	 */
  	cl_git_pass(git_oid_fromstr(&id1, "a8233120f6ad708f843d861ce2b7228ec4e3dec6"));
  
  	/* Add the new file to the index */
  	memset(&entry, 0x0, sizeof(git_index_entry));
  	entry.mode = GIT_FILEMODE_BLOB;
  	entry.path = "test.txt";
  	cl_git_pass(git_index_add_frombuffer(index, &entry,
  		content, strlen(content)));
  
  	/* Wow... it worked! */
  	cl_assert(git_index_entrycount(index) == 1);
  	returned_entry = git_index_get_byindex(index, 0);
  
  	/* And the built-in hashing mechanism worked as expected */
  	cl_assert_equal_oid(&id1, &returned_entry->id);
  	/* And mode is the one asked */
  	cl_assert_equal_i(GIT_FILEMODE_BLOB, returned_entry->mode);
  
  	/* Test access by path instead of index */
  	cl_assert((returned_entry = git_index_get_bypath(index, "test.txt", 0)) != NULL);
  	cl_assert_equal_oid(&id1, &returned_entry->id);
  
  	/* Test the blob is in the repository */
  	cl_git_pass(git_blob_lookup(&blob, repo, &id1));
  	cl_assert_equal_s(
  		content, git_blob_rawcontent(blob));
  	git_blob_free(blob);
  
  	git_index_free(index);
  	git_repository_free(repo);
  }
  
  void test_index_tests__dirty_and_clean(void)
  {
  	git_repository *repo;
  	git_index *index;
  	git_index_entry entry = {{0}};
  
  	/* Index is not dirty after opening */
  	cl_git_pass(git_repository_init(&repo, "./myrepo", 0));
  	cl_git_pass(git_repository_index(&index, repo));
  
  	cl_assert(git_index_entrycount(index) == 0);
  	cl_assert(!git_index_is_dirty(index));
  
  	/* Index is dirty after adding an entry */
  	entry.mode = GIT_FILEMODE_BLOB;
  	entry.path = "test.txt";
  	cl_git_pass(git_index_add_frombuffer(index, &entry, "Hi.\n", 4));
  	cl_assert(git_index_entrycount(index) == 1);
  	cl_assert(git_index_is_dirty(index));
  
  	/* Index is not dirty after write */
  	cl_git_pass(git_index_write(index));
  	cl_assert(!git_index_is_dirty(index));
  
  	/* Index is dirty after removing an entry */
  	cl_git_pass(git_index_remove_bypath(index, "test.txt"));
  	cl_assert(git_index_entrycount(index) == 0);
  	cl_assert(git_index_is_dirty(index));
  
  	/* Index is not dirty after write */
  	cl_git_pass(git_index_write(index));
  	cl_assert(!git_index_is_dirty(index));
  
  	/* Index remains not dirty after read */
  	cl_git_pass(git_index_read(index, 0));
  	cl_assert(!git_index_is_dirty(index));
  
  	/* Index is dirty when we do an unforced read with dirty content */
  	cl_git_pass(git_index_add_frombuffer(index, &entry, "Hi.\n", 4));
  	cl_assert(git_index_entrycount(index) == 1);
  	cl_assert(git_index_is_dirty(index));
  
  	cl_git_pass(git_index_read(index, 0));
  	cl_assert(git_index_is_dirty(index));
  
  	/* Index is clean when we force a read with dirty content */
  	cl_git_pass(git_index_read(index, 1));
  	cl_assert(!git_index_is_dirty(index));
  
  	git_index_free(index);
  	git_repository_free(repo);
  }
  
  void test_index_tests__dirty_fails_optionally(void)
  {
  	git_repository *repo;
  	git_index *index;
  	git_index_entry entry = {{0}};
  
  	/* Index is not dirty after opening */
  	repo = cl_git_sandbox_init("testrepo");
  	cl_git_pass(git_repository_index(&index, repo));
  
  	/* Index is dirty after adding an entry */
  	entry.mode = GIT_FILEMODE_BLOB;
  	entry.path = "test.txt";
  	cl_git_pass(git_index_add_frombuffer(index, &entry, "Hi.\n", 4));
  	cl_assert(git_index_is_dirty(index));
  
  	cl_git_pass(git_checkout_head(repo, NULL));
  
  	/* Index is dirty (again) after adding an entry */
  	entry.mode = GIT_FILEMODE_BLOB;
  	entry.path = "test.txt";
  	cl_git_pass(git_index_add_frombuffer(index, &entry, "Hi.\n", 4));
  	cl_assert(git_index_is_dirty(index));
  
  	cl_git_pass(git_libgit2_opts(GIT_OPT_ENABLE_UNSAVED_INDEX_SAFETY, 1));
  	cl_git_fail_with(GIT_EINDEXDIRTY, git_checkout_head(repo, NULL));
  
  	git_index_free(index);
  	cl_git_sandbox_cleanup();
  }
  
  void test_index_tests__add_frombuffer_reset_entry(void)
  {
  	git_index *index;
  	git_repository *repo;
          git_index_entry entry;
  	const git_index_entry *returned_entry;
  	git_filebuf file = GIT_FILEBUF_INIT;
  
  	git_oid id1;
  	git_blob *blob;
  	const char *old_content = "here\n";
  	const char *content = "hey there\n";
  
  	cl_set_cleanup(&cleanup_myrepo, NULL);
  
  	/* Intialize a new repository */
  	cl_git_pass(git_repository_init(&repo, "./myrepo", 0));
  	cl_git_pass(git_repository_index(&index, repo));
  	cl_git_pass(git_futils_mkpath2file("myrepo/test.txt", 0777));
  	cl_git_pass(git_filebuf_open(&file, "myrepo/test.txt", 0, 0666));
  	cl_git_pass(git_filebuf_write(&file, old_content, strlen(old_content)));
  	cl_git_pass(git_filebuf_commit(&file));
  
  	/* Store the expected hash of the file/blob
  	 * This has been generated by executing the following
  	 * $ echo "hey there" | git hash-object --stdin
  	 */
  	cl_git_pass(git_oid_fromstr(&id1, "a8233120f6ad708f843d861ce2b7228ec4e3dec6"));
  
  	cl_git_pass(git_index_add_bypath(index, "test.txt"));
  
  	/* Add the new file to the index */
  	memset(&entry, 0x0, sizeof(git_index_entry));
  	entry.mode = GIT_FILEMODE_BLOB;
  	entry.path = "test.txt";
  	cl_git_pass(git_index_add_frombuffer(index, &entry,
  		content, strlen(content)));
  
  	/* Wow... it worked! */
  	cl_assert(git_index_entrycount(index) == 1);
  	returned_entry = git_index_get_byindex(index, 0);
  
  	/* And the built-in hashing mechanism worked as expected */
  	cl_assert_equal_oid(&id1, &returned_entry->id);
  	/* And mode is the one asked */
  	cl_assert_equal_i(GIT_FILEMODE_BLOB, returned_entry->mode);
  
  	/* Test access by path instead of index */
  	cl_assert((returned_entry = git_index_get_bypath(index, "test.txt", 0)) != NULL);
  	cl_assert_equal_oid(&id1, &returned_entry->id);
  	cl_assert_equal_i(0, returned_entry->dev);
  	cl_assert_equal_i(0, returned_entry->ino);
  	cl_assert_equal_i(0, returned_entry->uid);
  	cl_assert_equal_i(0, returned_entry->uid);
  	cl_assert_equal_i(10, returned_entry->file_size);
  
              /* Test the blob is in the repository */
  	cl_git_pass(git_blob_lookup(&blob, repo, &id1));
  	cl_assert_equal_s(content, git_blob_rawcontent(blob));
  	git_blob_free(blob);
  
  	git_index_free(index);
  	git_repository_free(repo);
  }
  
  static void cleanup_1397(void *opaque)
  {
  	GIT_UNUSED(opaque);
  	cl_git_sandbox_cleanup();
  }
  
  void test_index_tests__add_issue_1397(void)
  {
  	git_index *index;
  	git_repository *repo;
  	const git_index_entry *entry;
  	git_oid id1;
  
  	cl_set_cleanup(&cleanup_1397, NULL);
  
  	repo = cl_git_sandbox_init("issue_1397");
  
  	cl_repo_set_bool(repo, "core.autocrlf", true);
  
  	/* Ensure we're the only guy in the room */
  	cl_git_pass(git_repository_index(&index, repo));
  
  	/* Store the expected hash of the file/blob
  	 * This has been generated by executing the following
  	 * $ git hash-object crlf_file.txt
  	 */
  	cl_git_pass(git_oid_fromstr(&id1, "8312e0889a9cbab77c732b6bc39b51a683e3a318"));
  
  	/* Make sure the initial SHA-1 is correct */
  	cl_assert((entry = git_index_get_bypath(index, "crlf_file.txt", 0)) != NULL);
  	cl_assert_equal_oid(&id1, &entry->id);
  
  	/* Update the index */
  	cl_git_pass(git_index_add_bypath(index, "crlf_file.txt"));
  
  	/* Check the new SHA-1 */
  	cl_assert((entry = git_index_get_bypath(index, "crlf_file.txt", 0)) != NULL);
  	cl_assert_equal_oid(&id1, &entry->id);
  
  	git_index_free(index);
  }
  
  void test_index_tests__add_bypath_to_a_bare_repository_returns_EBAREPO(void)
  {
  	git_repository *bare_repo;
  	git_index *index;
  
  	cl_git_pass(git_repository_open(&bare_repo, cl_fixture("testrepo.git")));
  	cl_git_pass(git_repository_index(&index, bare_repo));
  
  	cl_assert_equal_i(GIT_EBAREREPO, git_index_add_bypath(index, "test.txt"));
  
  	git_index_free(index);
  	git_repository_free(bare_repo);
  }
  
  static void add_invalid_filename(git_repository *repo, const char *fn)
  {
  	git_index *index;
  	git_buf path = GIT_BUF_INIT;
  
  	cl_git_pass(git_repository_index(&index, repo));
  	cl_assert(git_index_entrycount(index) == 0);
  
  	git_buf_joinpath(&path, "./invalid", fn);
  
  	cl_git_mkfile(path.ptr, NULL);
  	cl_git_fail(git_index_add_bypath(index, fn));
  	cl_must_pass(p_unlink(path.ptr));
  
  	cl_assert(git_index_entrycount(index) == 0);
  
  	git_buf_dispose(&path);
  	git_index_free(index);
  }
  
  /* Test that writing an invalid filename fails */
  void test_index_tests__add_invalid_filename(void)
  {
  	git_repository *repo;
  
  	p_mkdir("invalid", 0700);
  
  	cl_git_pass(git_repository_init(&repo, "./invalid", 0));
  	cl_must_pass(p_mkdir("./invalid/subdir", 0777));
  
  	/* cl_git_mkfile() needs the dir to exist */
  	if (!git_path_exists("./invalid/.GIT"))
  		cl_must_pass(p_mkdir("./invalid/.GIT", 0777));
  	if (!git_path_exists("./invalid/.GiT"))
  		cl_must_pass(p_mkdir("./invalid/.GiT", 0777));
  
  	add_invalid_filename(repo, ".git/hello");
  	add_invalid_filename(repo, ".GIT/hello");
  	add_invalid_filename(repo, ".GiT/hello");
  	add_invalid_filename(repo, "./.git/hello");
  	add_invalid_filename(repo, "./foo");
  	add_invalid_filename(repo, "./bar");
  	add_invalid_filename(repo, "subdir/../bar");
  
  	git_repository_free(repo);
  
  	cl_fixture_cleanup("invalid");
  }
  
  static void replace_char(char *str, char in, char out)
  {
  	char *c = str;
  
  	while (*c++)
  		if (*c == in)
  			*c = out;
  }
  
  static void write_invalid_filename(git_repository *repo, const char *fn_orig)
  {
  	git_index *index;
  	git_oid expected;
  	const git_index_entry *entry;
  	git_buf path = GIT_BUF_INIT;
  	char *fn;
  
  	cl_git_pass(git_repository_index(&index, repo));
  	cl_assert(git_index_entrycount(index) == 0);
  
  	/*
  	 * Sneak a valid path into the index, we'll update it
  	 * to an invalid path when we try to write the index.
  	 */
  	fn = git__strdup(fn_orig);
  	replace_char(fn, '/', '_');
  
  	git_buf_joinpath(&path, "./invalid", fn);
  
  	cl_git_mkfile(path.ptr, NULL);
  
  	cl_git_pass(git_index_add_bypath(index, fn));
  
  	cl_assert(entry = git_index_get_bypath(index, fn, 0));
  
  	/* kids, don't try this at home */
  	replace_char((char *)entry->path, '_', '/');
  
  	/* write-tree */
  	cl_git_fail(git_index_write_tree(&expected, index));
  
  	p_unlink(path.ptr);
  
  	cl_git_pass(git_index_remove_all(index, NULL, NULL, NULL));
  	git_buf_dispose(&path);
  	git_index_free(index);
  	git__free(fn);
  }
  
  /* Test that writing an invalid filename fails */
  void test_index_tests__write_invalid_filename(void)
  {
  	git_repository *repo;
  
  	p_mkdir("invalid", 0700);
  
  	cl_git_pass(git_repository_init(&repo, "./invalid", 0));
  
  	write_invalid_filename(repo, ".git/hello");
  	write_invalid_filename(repo, ".GIT/hello");
  	write_invalid_filename(repo, ".GiT/hello");
  	write_invalid_filename(repo, "./.git/hello");
  	write_invalid_filename(repo, "./foo");
  	write_invalid_filename(repo, "./bar");
  	write_invalid_filename(repo, "foo/../bar");
  
  	git_repository_free(repo);
  
  	cl_fixture_cleanup("invalid");
  }
  
  void test_index_tests__honors_protect_filesystems(void)
  {
  	git_repository *repo;
  
  	p_mkdir("invalid", 0700);
  
  	cl_git_pass(git_repository_init(&repo, "./invalid", 0));
  
  	cl_repo_set_bool(repo, "core.protectHFS", true);
  	cl_repo_set_bool(repo, "core.protectNTFS", true);
  
  	write_invalid_filename(repo, ".git./hello");
  	write_invalid_filename(repo, ".git\xe2\x80\xad/hello");
  	write_invalid_filename(repo, "git~1/hello");
  	write_invalid_filename(repo, ".git\xe2\x81\xaf/hello");
  
  	git_repository_free(repo);
  
  	cl_fixture_cleanup("invalid");
  }
  
  void test_index_tests__remove_entry(void)
  {
  	git_repository *repo;
  	git_index *index;
  
  	p_mkdir("index_test", 0770);
  
  	cl_git_pass(git_repository_init(&repo, "index_test", 0));
  	cl_git_pass(git_repository_index(&index, repo));
  	cl_assert(git_index_entrycount(index) == 0);
  
  	cl_git_mkfile("index_test/hello", NULL);
  	cl_git_pass(git_index_add_bypath(index, "hello"));
  	cl_git_pass(git_index_write(index));
  
  	cl_git_pass(git_index_read(index, true)); /* reload */
  	cl_assert(git_index_entrycount(index) == 1);
  	cl_assert(git_index_get_bypath(index, "hello", 0) != NULL);
  
  	cl_git_pass(git_index_remove(index, "hello", 0));
  	cl_git_pass(git_index_write(index));
  
  	cl_git_pass(git_index_read(index, true)); /* reload */
  	cl_assert(git_index_entrycount(index) == 0);
  	cl_assert(git_index_get_bypath(index, "hello", 0) == NULL);
  
  	git_index_free(index);
  	git_repository_free(repo);
  	cl_fixture_cleanup("index_test");
  }
  
  void test_index_tests__remove_directory(void)
  {
  	git_repository *repo;
  	git_index *index;
  
  	p_mkdir("index_test", 0770);
  
  	cl_git_pass(git_repository_init(&repo, "index_test", 0));
  	cl_git_pass(git_repository_index(&index, repo));
  	cl_assert_equal_i(0, (int)git_index_entrycount(index));
  
  	p_mkdir("index_test/a", 0770);
  	cl_git_mkfile("index_test/a/1.txt", NULL);
  	cl_git_mkfile("index_test/a/2.txt", NULL);
  	cl_git_mkfile("index_test/a/3.txt", NULL);
  	cl_git_mkfile("index_test/b.txt", NULL);
  
  	cl_git_pass(git_index_add_bypath(index, "a/1.txt"));
  	cl_git_pass(git_index_add_bypath(index, "a/2.txt"));
  	cl_git_pass(git_index_add_bypath(index, "a/3.txt"));
  	cl_git_pass(git_index_add_bypath(index, "b.txt"));
  	cl_git_pass(git_index_write(index));
  
  	cl_git_pass(git_index_read(index, true)); /* reload */
  	cl_assert_equal_i(4, (int)git_index_entrycount(index));
  	cl_assert(git_index_get_bypath(index, "a/1.txt", 0) != NULL);
  	cl_assert(git_index_get_bypath(index, "a/2.txt", 0) != NULL);
  	cl_assert(git_index_get_bypath(index, "b.txt", 0) != NULL);
  
  	cl_git_pass(git_index_remove(index, "a/1.txt", 0));
  	cl_git_pass(git_index_write(index));
  
  	cl_git_pass(git_index_read(index, true)); /* reload */
  	cl_assert_equal_i(3, (int)git_index_entrycount(index));
  	cl_assert(git_index_get_bypath(index, "a/1.txt", 0) == NULL);
  	cl_assert(git_index_get_bypath(index, "a/2.txt", 0) != NULL);
  	cl_assert(git_index_get_bypath(index, "b.txt", 0) != NULL);
  
  	cl_git_pass(git_index_remove_directory(index, "a", 0));
  	cl_git_pass(git_index_write(index));
  
  	cl_git_pass(git_index_read(index, true)); /* reload */
  	cl_assert_equal_i(1, (int)git_index_entrycount(index));
  	cl_assert(git_index_get_bypath(index, "a/1.txt", 0) == NULL);
  	cl_assert(git_index_get_bypath(index, "a/2.txt", 0) == NULL);
  	cl_assert(git_index_get_bypath(index, "b.txt", 0) != NULL);
  
  	git_index_free(index);
  	git_repository_free(repo);
  	cl_fixture_cleanup("index_test");
  }
  
  void test_index_tests__preserves_case(void)
  {
  	git_repository *repo;
  	git_index *index;
  	const git_index_entry *entry;
  	int index_caps;
  
  	cl_set_cleanup(&cleanup_myrepo, NULL);
  
  	cl_git_pass(git_repository_init(&repo, "./myrepo", 0));
  	cl_git_pass(git_repository_index(&index, repo));
  
  	index_caps = git_index_caps(index);
  
  	cl_git_rewritefile("myrepo/test.txt", "hey there\n");
  	cl_git_pass(git_index_add_bypath(index, "test.txt"));
  
  	cl_git_pass(p_rename("myrepo/test.txt", "myrepo/TEST.txt"));
  	cl_git_rewritefile("myrepo/TEST.txt", "hello again\n");
  	cl_git_pass(git_index_add_bypath(index, "TEST.txt"));
  
  	if (index_caps & GIT_INDEXCAP_IGNORE_CASE)
  		cl_assert_equal_i(1, (int)git_index_entrycount(index));
  	else
  		cl_assert_equal_i(2, (int)git_index_entrycount(index));
  
  	/* Test access by path instead of index */
  	cl_assert((entry = git_index_get_bypath(index, "test.txt", 0)) != NULL);
  	/* The path should *not* have changed without an explicit remove */
  	cl_assert(git__strcmp(entry->path, "test.txt") == 0);
  
  	cl_assert((entry = git_index_get_bypath(index, "TEST.txt", 0)) != NULL);
  	if (index_caps & GIT_INDEXCAP_IGNORE_CASE)
  		/* The path should *not* have changed without an explicit remove */
  		cl_assert(git__strcmp(entry->path, "test.txt") == 0);
  	else
  		cl_assert(git__strcmp(entry->path, "TEST.txt") == 0);
  
  	git_index_free(index);
  	git_repository_free(repo);
  }
  
  void test_index_tests__elocked(void)
  {
  	git_repository *repo;
  	git_index *index;
  	git_filebuf file = GIT_FILEBUF_INIT;
  	const git_error *err;
  	int error;
  
  	cl_set_cleanup(&cleanup_myrepo, NULL);
  
  	cl_git_pass(git_repository_init(&repo, "./myrepo", 0));
  	cl_git_pass(git_repository_index(&index, repo));
  
  	/* Lock the index file so we fail to lock it */
  	cl_git_pass(git_filebuf_open(&file, index->index_file_path, 0, 0666));
  	error = git_index_write(index);
  	cl_assert_equal_i(GIT_ELOCKED, error);
  
  	err = giterr_last();
  	cl_assert_equal_i(err->klass, GITERR_INDEX);
  
  	git_filebuf_cleanup(&file);
  	git_index_free(index);
  	git_repository_free(repo);
  }
  
  void test_index_tests__reload_from_disk(void)
  {
  	git_repository *repo;
  	git_index *read_index;
  	git_index *write_index;
  
  	cl_set_cleanup(&cleanup_myrepo, NULL);
  
  	cl_git_pass(git_futils_mkdir("./myrepo", 0777, GIT_MKDIR_PATH));
  	cl_git_mkfile("./myrepo/a.txt", "a\n");
  	cl_git_mkfile("./myrepo/b.txt", "b\n");
  
  	cl_git_pass(git_repository_init(&repo, "./myrepo", 0));
  	cl_git_pass(git_repository_index(&write_index, repo));
  	cl_assert_equal_i(false, write_index->on_disk);
  
  	cl_git_pass(git_index_open(&read_index, write_index->index_file_path));
  	cl_assert_equal_i(false, read_index->on_disk);
  
  	/* Stage two new files against the write_index */
  	cl_git_pass(git_index_add_bypath(write_index, "a.txt"));
  	cl_git_pass(git_index_add_bypath(write_index, "b.txt"));
  
  	cl_assert_equal_sz(2, git_index_entrycount(write_index));
  
  	/* Persist the index changes to disk */
  	cl_git_pass(git_index_write(write_index));
  	cl_assert_equal_i(true, write_index->on_disk);
  
  	/* Sync the changes back into the read_index */
  	cl_assert_equal_sz(0, git_index_entrycount(read_index));
  
  	cl_git_pass(git_index_read(read_index, true));
  	cl_assert_equal_i(true, read_index->on_disk);
  
  	cl_assert_equal_sz(2, git_index_entrycount(read_index));
  
  	/* Remove the index file from the filesystem */
  	cl_git_pass(p_unlink(write_index->index_file_path));
  
  	/* Sync the changes back into the read_index */
  	cl_git_pass(git_index_read(read_index, true));
  	cl_assert_equal_i(false, read_index->on_disk);
  	cl_assert_equal_sz(0, git_index_entrycount(read_index));
  
  	git_index_free(read_index);
  	git_index_free(write_index);
  	git_repository_free(repo);
  }
  
  void test_index_tests__corrupted_extension(void)
  {
  	git_index *index;
  
  	cl_git_fail_with(git_index_open(&index, TEST_INDEXBAD_PATH), GIT_ERROR);
  }
  
  void test_index_tests__reload_while_ignoring_case(void)
  {
  	git_index *index;
  	unsigned int caps;
  
  	cl_git_pass(git_index_open(&index, TEST_INDEX_PATH));
  	cl_git_pass(git_vector_verify_sorted(&index->entries));
  
  	caps = git_index_caps(index);
  	cl_git_pass(git_index_set_caps(index, caps &= ~GIT_INDEXCAP_IGNORE_CASE));
  	cl_git_pass(git_index_read(index, true));
  	cl_git_pass(git_vector_verify_sorted(&index->entries));
  	cl_assert(git_index_get_bypath(index, ".HEADER", 0));
  	cl_assert_equal_p(NULL, git_index_get_bypath(index, ".header", 0));
  
  	cl_git_pass(git_index_set_caps(index, caps | GIT_INDEXCAP_IGNORE_CASE));
  	cl_git_pass(git_index_read(index, true));
  	cl_git_pass(git_vector_verify_sorted(&index->entries));
  	cl_assert(git_index_get_bypath(index, ".HEADER", 0));
  	cl_assert(git_index_get_bypath(index, ".header", 0));
  
  	git_index_free(index);
  }
  
  void test_index_tests__change_icase_on_instance(void)
  {
  	git_index *index;
  	unsigned int caps;
  	const git_index_entry *e;
  
  	cl_git_pass(git_index_open(&index, TEST_INDEX_PATH));
  	cl_git_pass(git_vector_verify_sorted(&index->entries));
  
  	caps = git_index_caps(index);
  	cl_git_pass(git_index_set_caps(index, caps &= ~GIT_INDEXCAP_IGNORE_CASE));
  	cl_assert_equal_i(false, index->ignore_case);
  	cl_git_pass(git_vector_verify_sorted(&index->entries));
  	cl_assert(e = git_index_get_bypath(index, "src/common.h", 0));
  	cl_assert_equal_p(NULL, e = git_index_get_bypath(index, "SRC/Common.h", 0));
  	cl_assert(e = git_index_get_bypath(index, "COPYING", 0));
  	cl_assert_equal_p(NULL, e = git_index_get_bypath(index, "copying", 0));
  
  	cl_git_pass(git_index_set_caps(index, caps | GIT_INDEXCAP_IGNORE_CASE));
  	cl_assert_equal_i(true, index->ignore_case);
  	cl_git_pass(git_vector_verify_sorted(&index->entries));
  	cl_assert(e = git_index_get_bypath(index, "COPYING", 0));
  	cl_assert_equal_s("COPYING", e->path);
  	cl_assert(e = git_index_get_bypath(index, "copying", 0));
  	cl_assert_equal_s("COPYING", e->path);
  
  	git_index_free(index);
  }
  
  void test_index_tests__can_lock_index(void)
  {
  	git_repository *repo;
  	git_index *index;
  	git_indexwriter one = GIT_INDEXWRITER_INIT,
  		two = GIT_INDEXWRITER_INIT;
  
  	repo = cl_git_sandbox_init("testrepo.git");
  
  	cl_git_pass(git_repository_index(&index, repo));
  	cl_git_pass(git_indexwriter_init(&one, index));
  
  	cl_git_fail_with(GIT_ELOCKED, git_indexwriter_init(&two, index));
  	cl_git_fail_with(GIT_ELOCKED, git_index_write(index));
  
  	cl_git_pass(git_indexwriter_commit(&one));
  
  	cl_git_pass(git_index_write(index));
  
  	git_indexwriter_cleanup(&one);
  	git_indexwriter_cleanup(&two);
  	git_index_free(index);
  	cl_git_sandbox_cleanup();
  }
  

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