Add git_diff_patch_size() API

This adds a new API to get the size in bytes of the diffs in a
git_diff_patch object.

1 files changed, 15 insertions, 4 deletions

diff --git a/tests-clar/diff/patch.c b/tests-clar/diff/patch.c
index 3f14a0de7..51baadf2e 100644
--- a/tests-clar/diff/patch.c
+++ b/tests-clar/diff/patch.c
@@ -128,6 +128,9 @@ void test_diff_patch__to_string(void)
 
 	cl_assert_equal_s(expected, text);
 
+	cl_assert_equal_sz(31, git_diff_patch_size(patch, 0));
+	cl_assert_equal_sz(31, git_diff_patch_size(patch, 1));
+
 	git__free(text);
 	git_diff_patch_free(patch);
 	git_diff_list_free(diff);
@@ -409,6 +412,7 @@ void test_diff_patch__hunks_have_correct_line_numbers(void)
 static void check_single_patch_stats(
 	git_repository *repo, size_t hunks,
 	size_t adds, size_t dels, size_t ctxt,
+	size_t size_with_context, size_t size_without_context,
 	const char *expected)
 {
 	git_diff_list *diff;
@@ -439,6 +443,13 @@ static void check_single_patch_stats(
 		git__free(text);
 	}
 
+	if (size_with_context)
+		cl_assert_equal_sz(
+			size_with_context, git_diff_patch_size(patch, 1));
+	if (size_without_context)
+		cl_assert_equal_sz(
+			size_without_context, git_diff_patch_size(patch, 0));
+
 	/* walk lines in hunk with basic sanity checks */
 	for (; hunks > 0; --hunks) {
 		size_t i, max_i;
@@ -495,14 +506,14 @@ void test_diff_patch__line_counts_with_eofnl(void)
 	git_buf_consume(&content, end);
 	cl_git_rewritefile("renames/songof7cities.txt", content.ptr);
 
-	check_single_patch_stats(g_repo, 1, 0, 1, 3, NULL);
+	check_single_patch_stats(g_repo, 1, 0, 1, 3, 0, 0, NULL);
 
 	/* remove trailing whitespace */
 
 	git_buf_rtrim(&content);
 	cl_git_rewritefile("renames/songof7cities.txt", content.ptr);
 
-	check_single_patch_stats(g_repo, 2, 1, 2, 6, NULL);
+	check_single_patch_stats(g_repo, 2, 1, 2, 6, 0, 0, NULL);
 
 	/* add trailing whitespace */
 
@@ -514,7 +525,7 @@ void test_diff_patch__line_counts_with_eofnl(void)
 	cl_git_pass(git_buf_putc(&content, '\n'));
 	cl_git_rewritefile("renames/songof7cities.txt", content.ptr);
 
-	check_single_patch_stats(g_repo, 1, 1, 1, 3, NULL);
+	check_single_patch_stats(g_repo, 1, 1, 1, 3, 0, 0, NULL);
 
 	/* no trailing whitespace as context line */
 
@@ -537,7 +548,7 @@ void test_diff_patch__line_counts_with_eofnl(void)
 	cl_git_rewritefile("renames/songof7cities.txt", content.ptr);
 
 	check_single_patch_stats(
-		g_repo, 1, 1, 1, 6,
+		g_repo, 1, 1, 1, 6, 349, 115,
 		/* below is pasted output of 'git diff' with fn context removed */
 		"diff --git a/songof7cities.txt b/songof7cities.txt\n"
 		"index 378a7d9..3d0154e 100644\n"