thodg/libgit2/tests-clar/diff/patch.c

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• Hash : 93cf7bb8
  Author :
  Date : 2012-10-24T20:56:32
  

  Add git_diff_patch_to_str API This adds an API to generate a complete single-file patch text from a git_diff_patch object.

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• tests-clar/diff/patch.c

• #include "clar_libgit2.h"
  #include "diff_helpers.h"
  
  static git_repository *g_repo = NULL;
  
  void test_diff_patch__initialize(void)
  {
  	g_repo = cl_git_sandbox_init("status");
  }
  
  void test_diff_patch__cleanup(void)
  {
  	cl_git_sandbox_cleanup();
  }
  
  #define EXPECTED_HEADER "diff --git a/subdir.txt b/subdir.txt\n" \
  	"deleted file mode 100644\n" \
  	"index e8ee89e..0000000\n" \
  	"--- a/subdir.txt\n" \
  	"+++ /dev/null\n"
  
  #define EXPECTED_HUNK "@@ -1,2 +0,0 @@\n"
  
  static int check_removal_cb(
  	void *cb_data,
  	const git_diff_delta *delta,
  	const git_diff_range *range,
  	char line_origin,
  	const char *formatted_output,
  	size_t output_len)
  {
  	GIT_UNUSED(cb_data);
  	GIT_UNUSED(output_len);
  
  	switch (line_origin) {
  	case GIT_DIFF_LINE_FILE_HDR:
  		cl_assert_equal_s(EXPECTED_HEADER, formatted_output);
  		cl_assert(range == NULL);
  		goto check_delta;
  
  	case GIT_DIFF_LINE_HUNK_HDR:
  		cl_assert_equal_s(EXPECTED_HUNK, formatted_output);
  		/* Fall through */
  
  	case GIT_DIFF_LINE_CONTEXT:
  	case GIT_DIFF_LINE_DELETION:
  		goto check_range;
  
  	default:
  		/* unexpected code path */
  		return -1;
  	}
  
  check_range:
  	cl_assert(range != NULL);
  	cl_assert_equal_i(1, range->old_start);
  	cl_assert_equal_i(2, range->old_lines);
  	cl_assert_equal_i(0, range->new_start);
  	cl_assert_equal_i(0, range->new_lines);
  
  check_delta:
  	cl_assert_equal_s("subdir.txt", delta->old_file.path);
  	cl_assert_equal_s("subdir.txt", delta->new_file.path);
  	cl_assert_equal_i(GIT_DELTA_DELETED, delta->status);
  
  	return 0;
  }
  
  void test_diff_patch__can_properly_display_the_removal_of_a_file(void)
  {
  	/*
  	* $ git diff 26a125e..735b6a2
  	* diff --git a/subdir.txt b/subdir.txt
  	* deleted file mode 100644
  	* index e8ee89e..0000000
  	* --- a/subdir.txt
  	* +++ /dev/null
  	* @@ -1,2 +0,0 @@
  	* -Is it a bird?
  	* -Is it a plane?
  	*/
  
  	const char *one_sha = "26a125e";
  	const char *another_sha = "735b6a2";
  	git_tree *one, *another;
  	git_diff_list *diff;
  
  	one = resolve_commit_oid_to_tree(g_repo, one_sha);
  	another = resolve_commit_oid_to_tree(g_repo, another_sha);
  
  	cl_git_pass(git_diff_tree_to_tree(g_repo, NULL, one, another, &diff));
  
  	cl_git_pass(git_diff_print_patch(diff, NULL, check_removal_cb));
  
  	git_diff_list_free(diff);
  
  	git_tree_free(another);
  	git_tree_free(one);
  }
  
  void test_diff_patch__to_string(void)
  {
  	const char *one_sha = "26a125e";
  	const char *another_sha = "735b6a2";
  	git_tree *one, *another;
  	git_diff_list *diff;
  	git_diff_patch *patch;
  	char *text;
  	const char *expected = "diff --git a/subdir.txt b/subdir.txt\ndeleted file mode 100644\nindex e8ee89e..0000000\n--- a/subdir.txt\n+++ /dev/null\n@@ -1,2 +0,0 @@\n-Is it a bird?\n-Is it a plane?\n";
  
  	one = resolve_commit_oid_to_tree(g_repo, one_sha);
  	another = resolve_commit_oid_to_tree(g_repo, another_sha);
  
  	cl_git_pass(git_diff_tree_to_tree(g_repo, NULL, one, another, &diff));
  
  	cl_assert_equal_i(1, git_diff_num_deltas(diff));
  
  	cl_git_pass(git_diff_get_patch(&patch, NULL, diff, 0));
  
  	cl_git_pass(git_diff_patch_to_str(&text, patch));
  
  	cl_assert_equal_s(expected, text);
  
  	git__free(text);
  	git_diff_patch_free(patch);
  	git_diff_list_free(diff);
  	git_tree_free(another);
  	git_tree_free(one);
  }
  

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