patch_parse: test roundtrip patch parsing -> print

tests/patch/print.c

+#include "clar_libgit2.h"
+
+#include "patch_common.h"
+
+
+/* sanity check the round-trip of patch parsing:  ensure that we can parse
+ * and then print a variety of patch files.
+ */
+
+void patch_print_from_patchfile(const char *data, size_t len)
+{
+	git_patch *patch;
+	git_buf buf = GIT_BUF_INIT;
+
+	cl_git_pass(git_patch_from_patchfile(&patch, data, len));
+	cl_git_pass(git_patch_to_buf(&buf, patch));
+
+	cl_assert_equal_s(data, buf.ptr);
+
+	git_patch_free(patch);
+	git_buf_free(&buf);
+}
+
+void test_patch_print__change_middle(void)
+{
+	patch_print_from_patchfile(PATCH_ORIGINAL_TO_CHANGE_MIDDLE,
+		strlen(PATCH_ORIGINAL_TO_CHANGE_MIDDLE));
+}
+
+void test_patch_print__change_middle_nocontext(void)
+{
+	patch_print_from_patchfile(PATCH_ORIGINAL_TO_CHANGE_MIDDLE_NOCONTEXT,
+		strlen(PATCH_ORIGINAL_TO_CHANGE_MIDDLE_NOCONTEXT));
+}
+
+void test_patch_print__change_firstline(void)
+{
+	patch_print_from_patchfile(PATCH_ORIGINAL_TO_CHANGE_FIRSTLINE,
+		strlen(PATCH_ORIGINAL_TO_CHANGE_FIRSTLINE));
+}
+
+void test_patch_print__change_lastline(void)
+{
+	patch_print_from_patchfile(PATCH_ORIGINAL_TO_CHANGE_LASTLINE,
+		strlen(PATCH_ORIGINAL_TO_CHANGE_LASTLINE));
+}
+
+void test_patch_print__prepend(void)
+{
+	patch_print_from_patchfile(PATCH_ORIGINAL_TO_PREPEND,
+		strlen(PATCH_ORIGINAL_TO_PREPEND));
+}
+
+void test_patch_print__prepend_nocontext(void)
+{
+	patch_print_from_patchfile(PATCH_ORIGINAL_TO_PREPEND_NOCONTEXT,
+		strlen(PATCH_ORIGINAL_TO_PREPEND_NOCONTEXT));
+}
+
+void test_patch_print__append(void)
+{
+	patch_print_from_patchfile(PATCH_ORIGINAL_TO_APPEND,
+		strlen(PATCH_ORIGINAL_TO_APPEND));
+}
+
+void test_patch_print__append_nocontext(void)
+{
+	patch_print_from_patchfile(PATCH_ORIGINAL_TO_APPEND_NOCONTEXT,
+		strlen(PATCH_ORIGINAL_TO_APPEND_NOCONTEXT));
+}
+
+void test_patch_print__prepend_and_append(void)
+{
+	patch_print_from_patchfile(PATCH_ORIGINAL_TO_PREPEND_AND_APPEND,
+		strlen(PATCH_ORIGINAL_TO_PREPEND_AND_APPEND));
+}
+
+void test_patch_print__to_empty_file(void)
+{
+	patch_print_from_patchfile(PATCH_ORIGINAL_TO_EMPTY_FILE,
+		strlen(PATCH_ORIGINAL_TO_EMPTY_FILE));
+}
+
+void test_patch_print__from_empty_file(void)
+{
+	patch_print_from_patchfile(PATCH_EMPTY_FILE_TO_ORIGINAL,
+		strlen(PATCH_EMPTY_FILE_TO_ORIGINAL));
+}
+
+void test_patch_print__add(void)
+{
+	patch_print_from_patchfile(PATCH_ADD_ORIGINAL,
+		strlen(PATCH_ADD_ORIGINAL));
+}
+
+void test_patch_print__delete(void)
+{
+	patch_print_from_patchfile(PATCH_DELETE_ORIGINAL,
+		strlen(PATCH_DELETE_ORIGINAL));
+}
+
+void test_patch_print__rename_exact(void)
+{
+	patch_print_from_patchfile(PATCH_RENAME_EXACT,
+		strlen(PATCH_RENAME_EXACT));
+}
+
+void test_patch_print__rename_similar(void)
+{
+	patch_print_from_patchfile(PATCH_RENAME_SIMILAR,
+		strlen(PATCH_RENAME_SIMILAR));
+}
+
+void test_patch_print__rename_exact_quotedname(void)
+{
+	patch_print_from_patchfile(PATCH_RENAME_EXACT_QUOTEDNAME,
+		strlen(PATCH_RENAME_EXACT_QUOTEDNAME));
+}
+
+void test_patch_print__rename_similar_quotedname(void)
+{
+	patch_print_from_patchfile(PATCH_RENAME_SIMILAR_QUOTEDNAME,
+		strlen(PATCH_RENAME_SIMILAR_QUOTEDNAME));
+}
+
+void test_patch_print__modechange_unchanged(void)
+{
+	patch_print_from_patchfile(PATCH_MODECHANGE_UNCHANGED,
+		strlen(PATCH_MODECHANGE_UNCHANGED));
+}
+
+void test_patch_print__modechange_modified(void)
+{
+	patch_print_from_patchfile(PATCH_MODECHANGE_MODIFIED,
+		strlen(PATCH_MODECHANGE_MODIFIED));
+}
+
+void test_patch_print__binary_literal(void)
+{
+	patch_print_from_patchfile(PATCH_BINARY_LITERAL,
+		strlen(PATCH_BINARY_LITERAL));
+}
+
+void test_patch_print__binary_delta(void)
+{
+	patch_print_from_patchfile(PATCH_BINARY_DELTA,
+		strlen(PATCH_BINARY_DELTA));
+}
+
+void test_patch_print__binary_add(void)
+{
+	patch_print_from_patchfile(PATCH_BINARY_ADD,
+		strlen(PATCH_BINARY_ADD));
+}
+
+void test_patch_print__binary_delete(void)
+{
+	patch_print_from_patchfile(PATCH_BINARY_DELETE,
+		strlen(PATCH_BINARY_DELETE));
+}
+
+void test_patch_print__not_reversible(void)
+{
+	patch_print_from_patchfile(PATCH_BINARY_NOT_REVERSIBLE,
+		strlen(PATCH_BINARY_NOT_REVERSIBLE));
+}