1 files changed, 253 insertions, 0 deletions
diff --git a/tests/libgit2/filter/crlf.c b/tests/libgit2/filter/crlf.c
new file mode 100644
index 000000000..925ea58d2
--- /dev/null
+++ b/tests/libgit2/filter/crlf.c
@@ -0,0 +1,253 @@
+#include "clar_libgit2.h"
+#include "git2/sys/filter.h"
+
+static git_repository *g_repo = NULL;
+
+void test_filter_crlf__initialize(void)
+{
+	g_repo = cl_git_sandbox_init("crlf");
+
+	cl_git_mkfile("crlf/.gitattributes",
+		"*.txt text\n*.bin binary\n*.crlf text eol=crlf\n*.lf text eol=lf\n");
+
+	cl_repo_set_bool(g_repo, "core.autocrlf", true);
+}
+
+void test_filter_crlf__cleanup(void)
+{
+	cl_git_sandbox_cleanup();
+}
+
+void test_filter_crlf__to_worktree(void)
+{
+	git_filter_list *fl;
+	git_filter *crlf;
+	git_buf out = GIT_BUF_INIT;
+	const char *in;
+	size_t in_len;
+
+	cl_git_pass(git_filter_list_new(
+		&fl, g_repo, GIT_FILTER_TO_WORKTREE, 0));
+
+	crlf = git_filter_lookup(GIT_FILTER_CRLF);
+	cl_assert(crlf != NULL);
+
+	cl_git_pass(git_filter_list_push(fl, crlf, NULL));
+
+	in = "Some text\nRight here\n";
+	in_len = strlen(in);
+
+	cl_git_pass(git_filter_list_apply_to_buffer(&out, fl, in, in_len));
+
+	cl_assert_equal_s("Some text\r\nRight here\r\n", out.ptr);
+
+	git_filter_list_free(fl);
+	git_buf_dispose(&out);
+}
+
+void test_filter_crlf__to_odb(void)
+{
+	git_filter_list *fl;
+	git_filter *crlf;
+	git_buf out = GIT_BUF_INIT;
+	const char *in;
+	size_t in_len;
+
+	cl_git_pass(git_filter_list_new(
+		&fl, g_repo, GIT_FILTER_TO_ODB, 0));
+
+	crlf = git_filter_lookup(GIT_FILTER_CRLF);
+	cl_assert(crlf != NULL);
+
+	cl_git_pass(git_filter_list_push(fl, crlf, NULL));
+
+	in = "Some text\r\nRight here\r\n";
+	in_len = strlen(in);
+
+	cl_git_pass(git_filter_list_apply_to_buffer(&out, fl, in, in_len));
+
+	cl_assert_equal_s("Some text\nRight here\n", out.ptr);
+
+	git_filter_list_free(fl);
+	git_buf_dispose(&out);
+}
+
+void test_filter_crlf__with_safecrlf(void)
+{
+	git_filter_list *fl;
+	git_filter *crlf;
+	git_buf out = GIT_BUF_INIT;
+	const char *in;
+	size_t in_len;
+
+	cl_repo_set_bool(g_repo, "core.safecrlf", true);
+
+	cl_git_pass(git_filter_list_new(
+		&fl, g_repo, GIT_FILTER_TO_ODB, 0));
+
+	crlf = git_filter_lookup(GIT_FILTER_CRLF);
+	cl_assert(crlf != NULL);
+
+	cl_git_pass(git_filter_list_push(fl, crlf, NULL));
+
+	/* Normalized \r\n succeeds with safecrlf */
+	in = "Normal\r\nCRLF\r\nline-endings.\r\n";
+	in_len = strlen(in);
+
+	cl_git_pass(git_filter_list_apply_to_buffer(&out, fl, in, in_len));
+	cl_assert_equal_s("Normal\nCRLF\nline-endings.\n", out.ptr);
+
+	/* Mix of line endings fails with safecrlf */
+	in = "Mixed\nup\r\nLF\nand\r\nCRLF\nline-endings.\r\n";
+	in_len = strlen(in);
+
+	cl_git_fail(git_filter_list_apply_to_buffer(&out, fl, in, in_len));
+	cl_assert_equal_i(git_error_last()->klass, GIT_ERROR_FILTER);
+
+	/* Normalized \n fails for autocrlf=true when safecrlf=true */
+	in = "Normal\nLF\nonly\nline-endings.\n";
+	in_len = strlen(in);
+
+	cl_git_fail(git_filter_list_apply_to_buffer(&out, fl, in, in_len));
+	cl_assert_equal_i(git_error_last()->klass, GIT_ERROR_FILTER);
+
+	/* String with \r but without \r\n does not fail with safecrlf */
+	in = "Normal\nCR only\rand some more\nline-endings.\n";
+	in_len = strlen(in);
+
+	cl_git_pass(git_filter_list_apply_to_buffer(&out, fl, in, in_len));
+	cl_assert_equal_s("Normal\nCR only\rand some more\nline-endings.\n", out.ptr);
+
+	git_filter_list_free(fl);
+	git_buf_dispose(&out);
+}
+
+void test_filter_crlf__with_safecrlf_and_unsafe_allowed(void)
+{
+	git_filter_list *fl;
+	git_filter *crlf;
+	git_buf out = GIT_BUF_INIT;
+	const char *in;
+	size_t in_len;
+
+	cl_repo_set_bool(g_repo, "core.safecrlf", true);
+
+	cl_git_pass(git_filter_list_new(
+		&fl, g_repo, GIT_FILTER_TO_ODB, GIT_FILTER_ALLOW_UNSAFE));
+
+	crlf = git_filter_lookup(GIT_FILTER_CRLF);
+	cl_assert(crlf != NULL);
+
+	cl_git_pass(git_filter_list_push(fl, crlf, NULL));
+
+	/* Normalized \r\n succeeds with safecrlf */
+	in = "Normal\r\nCRLF\r\nline-endings.\r\n";
+	in_len = strlen(in);
+
+	cl_git_pass(git_filter_list_apply_to_buffer(&out, fl, in, in_len));
+	cl_assert_equal_s("Normal\nCRLF\nline-endings.\n", out.ptr);
+
+	/* Mix of line endings fails with safecrlf, but allowed to pass */
+	in = "Mixed\nup\r\nLF\nand\r\nCRLF\nline-endings.\r\n";
+	in_len = strlen(in);
+
+	cl_git_pass(git_filter_list_apply_to_buffer(&out, fl, in, in_len));
+	/* TODO: check for warning */
+	cl_assert_equal_s("Mixed\nup\nLF\nand\nCRLF\nline-endings.\n", out.ptr);
+
+	/* Normalized \n fails with safecrlf, but allowed to pass */
+	in = "Normal\nLF\nonly\nline-endings.\n";
+	in_len = strlen(in);
+
+	cl_git_pass(git_filter_list_apply_to_buffer(&out, fl, in, in_len));
+	/* TODO: check for warning */
+	cl_assert_equal_s("Normal\nLF\nonly\nline-endings.\n", out.ptr);
+
+	git_filter_list_free(fl);
+	git_buf_dispose(&out);
+}
+
+void test_filter_crlf__no_safecrlf(void)
+{
+	git_filter_list *fl;
+	git_filter *crlf;
+	git_buf out = GIT_BUF_INIT;
+	const char *in;
+	size_t in_len;
+
+	cl_git_pass(git_filter_list_new(
+		&fl, g_repo, GIT_FILTER_TO_ODB, 0));
+
+	crlf = git_filter_lookup(GIT_FILTER_CRLF);
+	cl_assert(crlf != NULL);
+
+	cl_git_pass(git_filter_list_push(fl, crlf, NULL));
+
+	/* Normalized \r\n succeeds with safecrlf */
+	in = "Normal\r\nCRLF\r\nline-endings.\r\n";
+	in_len = strlen(in);
+
+	cl_git_pass(git_filter_list_apply_to_buffer(&out, fl, in, in_len));
+	cl_assert_equal_s("Normal\nCRLF\nline-endings.\n", out.ptr);
+
+	/* Mix of line endings fails with safecrlf */
+	in = "Mixed\nup\r\nLF\nand\r\nCRLF\nline-endings.\r\n";
+	in_len = strlen(in);
+
+	cl_git_pass(git_filter_list_apply_to_buffer(&out, fl, in, in_len));
+	cl_assert_equal_s("Mixed\nup\nLF\nand\nCRLF\nline-endings.\n", out.ptr);
+
+	/* Normalized \n fails with safecrlf */
+	in = "Normal\nLF\nonly\nline-endings.\n";
+	in_len = strlen(in);
+
+	cl_git_pass(git_filter_list_apply_to_buffer(&out, fl, in, in_len));
+	cl_assert_equal_s("Normal\nLF\nonly\nline-endings.\n", out.ptr);
+
+	git_filter_list_free(fl);
+	git_buf_dispose(&out);
+}
+
+void test_filter_crlf__safecrlf_warn(void)
+{
+	git_filter_list *fl;
+	git_filter *crlf;
+	git_buf out = GIT_BUF_INIT;
+	const char *in;
+	size_t in_len;
+
+	cl_repo_set_string(g_repo, "core.safecrlf", "warn");
+
+	cl_git_pass(git_filter_list_new(
+		&fl, g_repo, GIT_FILTER_TO_ODB, 0));
+
+	crlf = git_filter_lookup(GIT_FILTER_CRLF);
+	cl_assert(crlf != NULL);
+
+	cl_git_pass(git_filter_list_push(fl, crlf, NULL));
+
+	/* Normalized \r\n succeeds with safecrlf=warn */
+	in = "Normal\r\nCRLF\r\nline-endings.\r\n";
+	in_len = strlen(in);
+
+	cl_git_pass(git_filter_list_apply_to_buffer(&out, fl, in, in_len));
+	cl_assert_equal_s("Normal\nCRLF\nline-endings.\n", out.ptr);
+
+	/* Mix of line endings succeeds with safecrlf=warn */
+	in = "Mixed\nup\r\nLF\nand\r\nCRLF\nline-endings.\r\n";
+	in_len = strlen(in);
+
+	cl_git_pass(git_filter_list_apply_to_buffer(&out, fl, in, in_len));
+	/* TODO: check for warning */
+	cl_assert_equal_s("Mixed\nup\nLF\nand\nCRLF\nline-endings.\n", out.ptr);
+
+	/* Normalized \n is reversible, so does not fail with safecrlf=warn */
+	in = "Normal\nLF\nonly\nline-endings.\n";
+	in_len = strlen(in);
+
+	cl_git_pass(git_filter_list_apply_to_buffer(&out, fl, in, in_len));
+	cl_assert_equal_s(in, out.ptr);
+
+	git_filter_list_free(fl);
+	git_buf_dispose(&out);
+}