Additional core.autocrlf and core.safecrlf tests

This is a cherry-pick of the tests from the following commits:

core.autocrlf=true and core.safecrlf=true did not fail on LF-only file as vanilla git does
Adding a CRLF-file with core.autocrlf=input and core.safecrlf=true does not fail as with vanilla git
Make files with #CR!=#CRLF not fail with core.safecrlf=true

Reported-by: Yue Lin Ho <b8732003@student.nsysu.edu.tw>
Signed-off-by: Sven Strickroth <email@cs-ware.de>

tests/filter/crlf.c

@@ -99,12 +99,19 @@ void test_filter_crlf__with_safecrlf(void)
 	cl_git_fail(git_filter_list_apply_to_data(&out, fl, &in));
 	cl_assert_equal_i(giterr_last()->klass, GITERR_FILTER);
 
-	/* Normalized \n is reversible, so does not fail with safecrlf */
+	/* Normalized \n fails for autocrlf=true when safecrlf=true */
 	in.ptr = "Normal\nLF\nonly\nline-endings.\n";
 	in.size = strlen(in.ptr);
 
+	cl_git_fail(git_filter_list_apply_to_data(&out, fl, &in));
+	cl_assert_equal_i(giterr_last()->klass, GITERR_FILTER);
+
+	/* String with \r but without \r\n does not fail with safecrlf */
+	in.ptr = "Normal\nCR only\rand some more\nline-endings.\n";
+	in.size = strlen(in.ptr);
+
 	cl_git_pass(git_filter_list_apply_to_data(&out, fl, &in));
-	cl_assert_equal_s(in.ptr, out.ptr);
+	cl_assert_equal_s("Normal\nCR only\rand some more\nline-endings.\n", out.ptr);
 
 	git_filter_list_free(fl);
 	git_buf_dispose(&out);

tests/index/crlf.c

@@ -339,13 +339,55 @@ void test_index_crlf__autocrlf_input_text_auto_attr(void)
 	cl_assert_equal_oid(&oid, &entry->id);
 }
 
+void test_index_crlf__safecrlf_true_autocrlf_input_text_auto_attr(void)
+{
+	const git_index_entry *entry;
+	git_oid oid;
+
+	cl_git_mkfile("./crlf/.gitattributes", "* text=auto\n");
+
+	cl_repo_set_string(g_repo, "core.autocrlf", "input");
+	cl_repo_set_bool(g_repo, "core.safecrlf", true);
+
+	cl_git_mkfile("./crlf/newfile.txt", FILE_CONTENTS_LF);
+
+	cl_git_pass(git_index_add_bypath(g_index, "newfile.txt"));
+	entry = git_index_get_bypath(g_index, "newfile.txt", 0);
+
+	cl_git_pass(git_oid_fromstr(&oid, FILE_OID_LF));
+	cl_assert_equal_oid(&oid, &entry->id);
+
+	cl_git_mkfile("./crlf/newfile2.txt", FILE_CONTENTS_CRLF);
+	cl_git_fail(git_index_add_bypath(g_index, "newfile2.txt"));
+}
+
+void test_index_crlf__safecrlf_true_autocrlf_input_text__no_attr(void)
+{
+	const git_index_entry *entry;
+	git_oid oid;
+
+	cl_repo_set_string(g_repo, "core.autocrlf", "input");
+	cl_repo_set_bool(g_repo, "core.safecrlf", true);
+
+	cl_git_mkfile("./crlf/newfile.txt", FILE_CONTENTS_LF);
+
+	cl_git_pass(git_index_add_bypath(g_index, "newfile.txt"));
+	entry = git_index_get_bypath(g_index, "newfile.txt", 0);
+
+	cl_git_pass(git_oid_fromstr(&oid, FILE_OID_LF));
+	cl_assert_equal_oid(&oid, &entry->id);
+
+	cl_git_mkfile("./crlf/newfile2.txt", FILE_CONTENTS_CRLF);
+	cl_git_fail(git_index_add_bypath(g_index, "newfile2.txt"));
+}
+
 void test_index_crlf__safecrlf_true_no_attrs(void)
 {
 	cl_repo_set_bool(g_repo, "core.autocrlf", true);
 	cl_repo_set_bool(g_repo, "core.safecrlf", true);
 
 	cl_git_mkfile("crlf/newfile.txt", ALL_LF_TEXT_RAW);
-	cl_git_pass(git_index_add_bypath(g_index, "newfile.txt"));
+	cl_git_fail(git_index_add_bypath(g_index, "newfile.txt"));
 
 	cl_git_mkfile("crlf/newfile.txt", ALL_CRLF_TEXT_RAW);
 	cl_git_pass(git_index_add_bypath(g_index, "newfile.txt"));