#include "clar_libgit2.h" #include "../checkout/checkout_helpers.h" #include "index.h" #include "repository.h" static git_repository *g_repo; void test_diff_externalmodifications__initialize(void) { g_repo = cl_git_sandbox_init("testrepo2"); } void test_diff_externalmodifications__cleanup(void) { cl_git_sandbox_cleanup(); g_repo = NULL; } void test_diff_externalmodifications__file_becomes_smaller(void) { git_index *index; git_diff *diff; git_patch* patch; git_str path = GIT_STR_INIT; char big_string[500001]; cl_git_pass(git_str_joinpath(&path, git_repository_workdir(g_repo), "README")); /* Modify the file with a large string */ memset(big_string, '\n', sizeof(big_string) - 1); big_string[sizeof(big_string) - 1] = '\0'; cl_git_mkfile(path.ptr, big_string); /* Get a diff */ cl_git_pass(git_repository_index(&index, g_repo)); cl_git_pass(git_diff_index_to_workdir(&diff, g_repo, index, NULL)); cl_assert_equal_i(1, git_diff_num_deltas(diff)); cl_assert_equal_i(500000, git_diff_get_delta(diff, 0)->new_file.size); /* Simulate file modification after we've gotten the diff. * Write a shorter string to ensure that we don't mmap 500KB from * the previous revision, which would most likely crash. */ cl_git_mkfile(path.ptr, "hello"); /* Attempt to get a patch */ cl_git_fail(git_patch_from_diff(&patch, diff, 0)); git_index_free(index); git_diff_free(diff); git_str_dispose(&path); } void test_diff_externalmodifications__file_becomes_empty(void) { git_index *index; git_diff *diff; git_patch* patch; git_str path = GIT_STR_INIT; cl_git_pass(git_str_joinpath(&path, git_repository_workdir(g_repo), "README")); /* Modify the file */ cl_git_mkfile(path.ptr, "hello"); /* Get a diff */ cl_git_pass(git_repository_index(&index, g_repo)); cl_git_pass(git_diff_index_to_workdir(&diff, g_repo, index, NULL)); cl_assert_equal_i(1, git_diff_num_deltas(diff)); cl_assert_equal_i(5, git_diff_get_delta(diff, 0)->new_file.size); /* Empty out the file after we've gotten the diff */ cl_git_mkfile(path.ptr, ""); /* Attempt to get a patch */ cl_git_fail(git_patch_from_diff(&patch, diff, 0)); git_index_free(index); git_diff_free(diff); git_str_dispose(&path); } void test_diff_externalmodifications__file_deleted(void) { git_index *index; git_diff *diff; git_patch* patch; git_str path = GIT_STR_INIT; cl_git_pass(git_str_joinpath(&path, git_repository_workdir(g_repo), "README")); /* Get a diff */ cl_git_pass(git_repository_index(&index, g_repo)); cl_git_pass(git_diff_index_to_workdir(&diff, g_repo, index, NULL)); cl_assert_equal_i(0, git_diff_num_deltas(diff)); /* Delete the file */ cl_git_rmfile(path.ptr); /* Attempt to get a patch */ cl_git_fail(git_patch_from_diff(&patch, diff, 0)); git_index_free(index); git_diff_free(diff); git_str_dispose(&path); } void test_diff_externalmodifications__empty_file_becomes_non_empty(void) { git_index *index; git_diff *diff; git_patch* patch; git_str path = GIT_STR_INIT; cl_git_pass(git_str_joinpath(&path, git_repository_workdir(g_repo), "README")); /* Empty out the file */ cl_git_mkfile(path.ptr, ""); /* Get a diff */ cl_git_pass(git_repository_index(&index, g_repo)); cl_git_pass(git_diff_index_to_workdir(&diff, g_repo, index, NULL)); cl_assert_equal_i(1, git_diff_num_deltas(diff)); cl_assert_equal_i(0, git_diff_get_delta(diff, 0)->new_file.size); /* Simulate file modification after we've gotten the diff */ cl_git_mkfile(path.ptr, "hello"); cl_git_fail(git_patch_from_diff(&patch, diff, 0)); git_index_free(index); git_diff_free(diff); git_str_dispose(&path); }