Adding upstream version 1.8.1+ds.upstream/1.8.1+dsupstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

2 files changed, 837 insertions, 0 deletions

diff --git a/tests/util/path/core.c b/tests/util/path/core.c
index f30f6c0..d1935a8 100644
--- a/tests/util/path/core.c
+++ b/tests/util/path/core.c
@@ -1,6 +1,784 @@
 #include "clar_libgit2.h"
+#include "futils.h"
 #include "fs_path.h"
 
+#ifndef GIT_WIN32
+# include <unistd.h>
+#endif
+
+static char *path_save;
+
+void test_path_core__initialize(void)
+{
+	path_save = cl_getenv("PATH");
+}
+
+void test_path_core__cleanup(void)
+{
+	cl_setenv("PATH", path_save);
+	git__free(path_save);
+	path_save = NULL;
+}
+
+static void
+check_dirname(const char *A, const char *B)
+{
+	git_str dir = GIT_STR_INIT;
+	char *dir2;
+
+	cl_assert(git_fs_path_dirname_r(&dir, A) >= 0);
+	cl_assert_equal_s(B, dir.ptr);
+	git_str_dispose(&dir);
+
+	cl_assert((dir2 = git_fs_path_dirname(A)) != NULL);
+	cl_assert_equal_s(B, dir2);
+	git__free(dir2);
+}
+
+static void
+check_basename(const char *A, const char *B)
+{
+	git_str base = GIT_STR_INIT;
+	char *base2;
+
+	cl_assert(git_fs_path_basename_r(&base, A) >= 0);
+	cl_assert_equal_s(B, base.ptr);
+	git_str_dispose(&base);
+
+	cl_assert((base2 = git_fs_path_basename(A)) != NULL);
+	cl_assert_equal_s(B, base2);
+	git__free(base2);
+}
+
+static void
+check_joinpath(const char *path_a, const char *path_b, const char *expected_path)
+{
+	git_str joined_path = GIT_STR_INIT;
+
+	cl_git_pass(git_str_joinpath(&joined_path, path_a, path_b));
+	cl_assert_equal_s(expected_path, joined_path.ptr);
+
+	git_str_dispose(&joined_path);
+}
+
+static void
+check_joinpath_n(
+	const char *path_a,
+	const char *path_b,
+	const char *path_c,
+	const char *path_d,
+	const char *expected_path)
+{
+	git_str joined_path = GIT_STR_INIT;
+
+	cl_git_pass(git_str_join_n(&joined_path, '/', 4,
+							   path_a, path_b, path_c, path_d));
+	cl_assert_equal_s(expected_path, joined_path.ptr);
+
+	git_str_dispose(&joined_path);
+}
+
+static void check_setenv(const char* name, const char* value)
+{
+    char* check;
+
+    cl_git_pass(cl_setenv(name, value));
+    check = cl_getenv(name);
+
+    if (value)
+	cl_assert_equal_s(value, check);
+    else
+	cl_assert(check == NULL);
+
+    git__free(check);
+}
+
+/* get the dirname of a path */
+void test_path_core__00_dirname(void)
+{
+	check_dirname(NULL, ".");
+	check_dirname("", ".");
+	check_dirname("a", ".");
+	check_dirname("/", "/");
+	check_dirname("/usr", "/");
+	check_dirname("/usr/", "/");
+	check_dirname("/usr/lib", "/usr");
+	check_dirname("/usr/lib/", "/usr");
+	check_dirname("/usr/lib//", "/usr");
+	check_dirname("usr/lib", "usr");
+	check_dirname("usr/lib/", "usr");
+	check_dirname("usr/lib//", "usr");
+	check_dirname(".git/", ".");
+
+	check_dirname(REP16("/abc"), REP15("/abc"));
+
+#ifdef GIT_WIN32
+	check_dirname("C:/", "C:/");
+	check_dirname("C:", "C:/");
+	check_dirname("C:/path/", "C:/");
+	check_dirname("C:/path", "C:/");
+	check_dirname("//computername/", "//computername/");
+	check_dirname("//computername", "//computername/");
+	check_dirname("//computername/path/", "//computername/");
+	check_dirname("//computername/path", "//computername/");
+	check_dirname("//computername/sub/path/", "//computername/sub");
+	check_dirname("//computername/sub/path", "//computername/sub");
+#endif
+}
+
+/* get the base name of a path */
+void test_path_core__01_basename(void)
+{
+	check_basename(NULL, ".");
+	check_basename("", ".");
+	check_basename("a", "a");
+	check_basename("/", "/");
+	check_basename("/usr", "usr");
+	check_basename("/usr/", "usr");
+	check_basename("/usr/lib", "lib");
+	check_basename("/usr/lib//", "lib");
+	check_basename("usr/lib", "lib");
+
+	check_basename(REP16("/abc"), "abc");
+	check_basename(REP1024("/abc"), "abc");
+}
+
+/* properly join path components */
+void test_path_core__05_joins(void)
+{
+	check_joinpath("", "", "");
+	check_joinpath("", "a", "a");
+	check_joinpath("", "/a", "/a");
+	check_joinpath("a", "", "a/");
+	check_joinpath("a", "/", "a/");
+	check_joinpath("a", "b", "a/b");
+	check_joinpath("/", "a", "/a");
+	check_joinpath("/", "", "/");
+	check_joinpath("/a", "/b", "/a/b");
+	check_joinpath("/a", "/b/", "/a/b/");
+	check_joinpath("/a/", "b/", "/a/b/");
+	check_joinpath("/a/", "/b/", "/a/b/");
+
+	check_joinpath("/abcd", "/defg", "/abcd/defg");
+	check_joinpath("/abcd", "/defg/", "/abcd/defg/");
+	check_joinpath("/abcd/", "defg/", "/abcd/defg/");
+	check_joinpath("/abcd/", "/defg/", "/abcd/defg/");
+
+	check_joinpath("/abcdefgh", "/12345678", "/abcdefgh/12345678");
+	check_joinpath("/abcdefgh", "/12345678/", "/abcdefgh/12345678/");
+	check_joinpath("/abcdefgh/", "12345678/", "/abcdefgh/12345678/");
+
+	check_joinpath(REP1024("aaaa"), "", REP1024("aaaa") "/");
+	check_joinpath(REP1024("aaaa/"), "", REP1024("aaaa/"));
+	check_joinpath(REP1024("/aaaa"), "", REP1024("/aaaa") "/");
+
+	check_joinpath(REP1024("aaaa"), REP1024("bbbb"),
+				   REP1024("aaaa") "/" REP1024("bbbb"));
+	check_joinpath(REP1024("/aaaa"), REP1024("/bbbb"),
+				   REP1024("/aaaa") REP1024("/bbbb"));
+}
+
+/* properly join path components for more than one path */
+void test_path_core__06_long_joins(void)
+{
+	check_joinpath_n("", "", "", "", "");
+	check_joinpath_n("", "a", "", "", "a/");
+	check_joinpath_n("a", "", "", "", "a/");
+	check_joinpath_n("", "", "", "a", "a");
+	check_joinpath_n("a", "b", "", "/c/d/", "a/b/c/d/");
+	check_joinpath_n("a", "b", "", "/c/d", "a/b/c/d");
+	check_joinpath_n("abcd", "efgh", "ijkl", "mnop", "abcd/efgh/ijkl/mnop");
+	check_joinpath_n("abcd/", "efgh/", "ijkl/", "mnop/", "abcd/efgh/ijkl/mnop/");
+	check_joinpath_n("/abcd/", "/efgh/", "/ijkl/", "/mnop/", "/abcd/efgh/ijkl/mnop/");
+
+	check_joinpath_n(REP1024("a"), REP1024("b"), REP1024("c"), REP1024("d"),
+					 REP1024("a") "/" REP1024("b") "/"
+					 REP1024("c") "/" REP1024("d"));
+	check_joinpath_n(REP1024("/a"), REP1024("/b"), REP1024("/c"), REP1024("/d"),
+					 REP1024("/a") REP1024("/b")
+					 REP1024("/c") REP1024("/d"));
+}
+
+
+static void
+check_path_to_dir(
+	const char* path,
+    const char* expected)
+{
+	git_str tgt = GIT_STR_INIT;
+
+	git_str_sets(&tgt, path);
+	cl_git_pass(git_fs_path_to_dir(&tgt));
+	cl_assert_equal_s(expected, tgt.ptr);
+
+	git_str_dispose(&tgt);
+}
+
+static void
+check_string_to_dir(
+	const char* path,
+	size_t      maxlen,
+    const char* expected)
+{
+	size_t len = strlen(path);
+	char *buf = git__malloc(len + 2);
+	cl_assert(buf);
+
+	strncpy(buf, path, len + 2);
+
+	git_fs_path_string_to_dir(buf, maxlen);
+
+	cl_assert_equal_s(expected, buf);
+
+	git__free(buf);
+}
+
+/* convert paths to dirs */
+void test_path_core__07_path_to_dir(void)
+{
+	check_path_to_dir("", "");
+	check_path_to_dir(".", "./");
+	check_path_to_dir("./", "./");
+	check_path_to_dir("a/", "a/");
+	check_path_to_dir("ab", "ab/");
+	/* make sure we try just under and just over an expansion that will
+	 * require a realloc
+	 */
+	check_path_to_dir("abcdef", "abcdef/");
+	check_path_to_dir("abcdefg", "abcdefg/");
+	check_path_to_dir("abcdefgh", "abcdefgh/");
+	check_path_to_dir("abcdefghi", "abcdefghi/");
+	check_path_to_dir(REP1024("abcd") "/", REP1024("abcd") "/");
+	check_path_to_dir(REP1024("abcd"), REP1024("abcd") "/");
+
+	check_string_to_dir("", 1, "");
+	check_string_to_dir(".", 1, ".");
+	check_string_to_dir(".", 2, "./");
+	check_string_to_dir(".", 3, "./");
+	check_string_to_dir("abcd", 3, "abcd");
+	check_string_to_dir("abcd", 4, "abcd");
+	check_string_to_dir("abcd", 5, "abcd/");
+	check_string_to_dir("abcd", 6, "abcd/");
+}
+
+/* join path to itself */
+void test_path_core__08_self_join(void)
+{
+	git_str path = GIT_STR_INIT;
+	size_t asize = 0;
+
+	asize = path.asize;
+	cl_git_pass(git_str_sets(&path, "/foo"));
+	cl_assert_equal_s(path.ptr, "/foo");
+	cl_assert(asize < path.asize);
+
+	asize = path.asize;
+	cl_git_pass(git_str_joinpath(&path, path.ptr, "this is a new string"));
+	cl_assert_equal_s(path.ptr, "/foo/this is a new string");
+	cl_assert(asize < path.asize);
+
+	asize = path.asize;
+	cl_git_pass(git_str_joinpath(&path, path.ptr, "/grow the buffer, grow the buffer, grow the buffer"));
+	cl_assert_equal_s(path.ptr, "/foo/this is a new string/grow the buffer, grow the buffer, grow the buffer");
+	cl_assert(asize < path.asize);
+
+	git_str_dispose(&path);
+	cl_git_pass(git_str_sets(&path, "/foo/bar"));
+
+	cl_git_pass(git_str_joinpath(&path, path.ptr + 4, "baz"));
+	cl_assert_equal_s(path.ptr, "/bar/baz");
+
+	asize = path.asize;
+	cl_git_pass(git_str_joinpath(&path, path.ptr + 4, "somethinglongenoughtorealloc"));
+	cl_assert_equal_s(path.ptr, "/baz/somethinglongenoughtorealloc");
+	cl_assert(asize < path.asize);
+
+	git_str_dispose(&path);
+}
+
+static void check_percent_decoding(const char *expected_result, const char *input)
+{
+	git_str buf = GIT_STR_INIT;
+
+	cl_git_pass(git__percent_decode(&buf, input));
+	cl_assert_equal_s(expected_result, git_str_cstr(&buf));
+
+	git_str_dispose(&buf);
+}
+
+void test_path_core__09_percent_decode(void)
+{
+	check_percent_decoding("abcd", "abcd");
+	check_percent_decoding("a2%", "a2%");
+	check_percent_decoding("a2%3", "a2%3");
+	check_percent_decoding("a2%%3", "a2%%3");
+	check_percent_decoding("a2%3z", "a2%3z");
+	check_percent_decoding("a,", "a%2c");
+	check_percent_decoding("a21", "a2%31");
+	check_percent_decoding("a2%1", "a2%%31");
+	check_percent_decoding("a bc ", "a%20bc%20");
+	check_percent_decoding("Vicent Mart" "\355", "Vicent%20Mart%ED");
+}
+
+static void check_fromurl(const char *expected_result, const char *input, int should_fail)
+{
+	git_str buf = GIT_STR_INIT;
+
+	assert(should_fail || expected_result);
+
+	if (!should_fail) {
+		cl_git_pass(git_fs_path_fromurl(&buf, input));
+		cl_assert_equal_s(expected_result, git_str_cstr(&buf));
+	} else
+		cl_git_fail(git_fs_path_fromurl(&buf, input));
+
+	git_str_dispose(&buf);
+}
+
+#ifdef GIT_WIN32
+#define ABS_PATH_MARKER ""
+#else
+#define ABS_PATH_MARKER "/"
+#endif
+
+void test_path_core__10_fromurl(void)
+{
+	/* Failing cases */
+	check_fromurl(NULL, "a", 1);
+	check_fromurl(NULL, "http:///c:/Temp%20folder/note.txt", 1);
+	check_fromurl(NULL, "file://c:/Temp%20folder/note.txt", 1);
+	check_fromurl(NULL, "file:////c:/Temp%20folder/note.txt", 1);
+	check_fromurl(NULL, "file:///", 1);
+	check_fromurl(NULL, "file:////", 1);
+	check_fromurl(NULL, "file://servername/c:/Temp%20folder/note.txt", 1);
+
+	/* Passing cases */
+	check_fromurl(ABS_PATH_MARKER "c:/Temp folder/note.txt", "file:///c:/Temp%20folder/note.txt", 0);
+	check_fromurl(ABS_PATH_MARKER "c:/Temp folder/note.txt", "file://localhost/c:/Temp%20folder/note.txt", 0);
+	check_fromurl(ABS_PATH_MARKER "c:/Temp+folder/note.txt", "file:///c:/Temp+folder/note.txt", 0);
+	check_fromurl(ABS_PATH_MARKER "a", "file:///a", 0);
+}
+
+typedef struct {
+	int expect_idx;
+	int cancel_after;
+	char **expect;
+} check_walkup_info;
+
+#define CANCEL_VALUE 1234
+
+static int check_one_walkup_step(void *ref, const char *path)
+{
+	check_walkup_info *info = (check_walkup_info *)ref;
+
+	if (!info->cancel_after) {
+		cl_assert_equal_s(info->expect[info->expect_idx], "[CANCEL]");
+		return CANCEL_VALUE;
+	}
+	info->cancel_after--;
+
+	cl_assert(info->expect[info->expect_idx] != NULL);
+	cl_assert_equal_s(info->expect[info->expect_idx], path);
+	info->expect_idx++;
+
+	return 0;
+}
+
+void test_path_core__11_walkup(void)
+{
+	git_str p = GIT_STR_INIT;
+
+	char *expect[] = {
+		/*  1 */ "/a/b/c/d/e/", "/a/b/c/d/", "/a/b/c/", "/a/b/", "/a/", "/", NULL,
+		/*  2 */ "/a/b/c/d/e", "/a/b/c/d/", "/a/b/c/", "/a/b/", "/a/", "/", NULL,
+		/*  3 */ "/a/b/c/d/e", "/a/b/c/d/", "/a/b/c/", "/a/b/", "/a/", "/", NULL,
+		/*  4 */ "/a/b/c/d/e", "/a/b/c/d/", "/a/b/c/", "/a/b/", "/a/", "/", NULL,
+		/*  5 */ "/a/b/c/d/e", "/a/b/c/d/", "/a/b/c/", "/a/b/", NULL,
+		/*  6 */ "/a/b/c/d/e", "/a/b/c/d/", "/a/b/c/", "/a/b/", NULL,
+		/*  7 */ "this_is_a_path", "", NULL,
+		/*  8 */ "this_is_a_path/", "", NULL,
+		/*  9 */ "///a///b///c///d///e///", "///a///b///c///d///", "///a///b///c///", "///a///b///", "///a///", "///", NULL,
+		/* 10 */ "a/b/c/", "a/b/", "a/", "", NULL,
+		/* 11 */ "a/b/c", "a/b/", "a/", "", NULL,
+		/* 12 */ "a/b/c/", "a/b/", "a/", NULL,
+		/* 13 */ "", NULL,
+		/* 14 */ "/", NULL,
+		/* 15 */ NULL
+	};
+
+	char *root[] = {
+		/*  1 */ NULL,
+		/*  2 */ NULL,
+		/*  3 */ "/",
+		/*  4 */ "",
+		/*  5 */ "/a/b",
+		/*  6 */ "/a/b/",
+		/*  7 */ NULL,
+		/*  8 */ NULL,
+		/*  9 */ NULL,
+		/* 10 */ NULL,
+		/* 11 */ NULL,
+		/* 12 */ "a/",
+		/* 13 */ NULL,
+		/* 14 */ NULL,
+	};
+
+	int i, j;
+	check_walkup_info info;
+
+	info.expect = expect;
+	info.cancel_after = -1;
+
+	for (i = 0, j = 0; expect[i] != NULL; i++, j++) {
+
+		git_str_sets(&p, expect[i]);
+
+		info.expect_idx = i;
+		cl_git_pass(
+			git_fs_path_walk_up(&p, root[j], check_one_walkup_step, &info)
+		);
+
+		cl_assert_equal_s(p.ptr, expect[i]);
+		cl_assert(expect[info.expect_idx] == NULL);
+		i = info.expect_idx;
+	}
+
+	git_str_dispose(&p);
+}
+
+void test_path_core__11a_walkup_cancel(void)
+{
+	git_str p = GIT_STR_INIT;
+	int cancel[] = { 3, 2, 1, 0 };
+	char *expect[] = {
+		"/a/b/c/d/e/", "/a/b/c/d/", "/a/b/c/", "[CANCEL]", NULL,
+		"/a/b/c/d/e", "/a/b/c/d/", "[CANCEL]", NULL,
+		"/a/b/c/d/e", "[CANCEL]", NULL,
+		"[CANCEL]", NULL,
+		NULL
+	};
+	char *root[] = { NULL, NULL, "/", "", NULL };
+	int i, j;
+	check_walkup_info info;
+
+	info.expect = expect;
+
+	for (i = 0, j = 0; expect[i] != NULL; i++, j++) {
+
+		git_str_sets(&p, expect[i]);
+
+		info.cancel_after = cancel[j];
+		info.expect_idx = i;
+
+		cl_assert_equal_i(
+			CANCEL_VALUE,
+			git_fs_path_walk_up(&p, root[j], check_one_walkup_step, &info)
+		);
+
+		/* skip to next run of expectations */
+		while (expect[i] != NULL) i++;
+	}
+
+	git_str_dispose(&p);
+}
+
+void test_path_core__12_offset_to_path_root(void)
+{
+	cl_assert(git_fs_path_root("non/rooted/path") == -1);
+	cl_assert(git_fs_path_root("/rooted/path") == 0);
+
+#ifdef GIT_WIN32
+	/* Windows specific tests */
+	cl_assert(git_fs_path_root("C:non/rooted/path") == -1);
+	cl_assert(git_fs_path_root("C:/rooted/path") == 2);
+	cl_assert(git_fs_path_root("//computername/sharefolder/resource") == 14);
+	cl_assert(git_fs_path_root("//computername/sharefolder") == 14);
+	cl_assert(git_fs_path_root("//computername") == -1);
+#endif
+}
+
+#define NON_EXISTING_FILEPATH "i_hope_i_do_not_exist"
+
+void test_path_core__13_cannot_prettify_a_non_existing_file(void)
+{
+	git_str p = GIT_STR_INIT;
+
+	cl_assert_equal_b(git_fs_path_exists(NON_EXISTING_FILEPATH), false);
+	cl_assert_equal_i(GIT_ENOTFOUND, git_fs_path_prettify(&p, NON_EXISTING_FILEPATH, NULL));
+	cl_assert_equal_i(GIT_ENOTFOUND, git_fs_path_prettify(&p, NON_EXISTING_FILEPATH "/so-do-i", NULL));
+
+	git_str_dispose(&p);
+}
+
+void test_path_core__14_apply_relative(void)
+{
+	git_str p = GIT_STR_INIT;
+
+	cl_git_pass(git_str_sets(&p, "/this/is/a/base"));
+
+	cl_git_pass(git_fs_path_apply_relative(&p, "../test"));
+	cl_assert_equal_s("/this/is/a/test", p.ptr);
+
+	cl_git_pass(git_fs_path_apply_relative(&p, "../../the/./end"));
+	cl_assert_equal_s("/this/is/the/end", p.ptr);
+
+	cl_git_pass(git_fs_path_apply_relative(&p, "./of/this/../the/string"));
+	cl_assert_equal_s("/this/is/the/end/of/the/string", p.ptr);
+
+	cl_git_pass(git_fs_path_apply_relative(&p, "../../../../../.."));
+	cl_assert_equal_s("/this/", p.ptr);
+
+	cl_git_pass(git_fs_path_apply_relative(&p, "../"));
+	cl_assert_equal_s("/", p.ptr);
+
+	cl_git_fail(git_fs_path_apply_relative(&p, "../../.."));
+
+
+	cl_git_pass(git_str_sets(&p, "d:/another/test"));
+
+	cl_git_pass(git_fs_path_apply_relative(&p, "../.."));
+	cl_assert_equal_s("d:/", p.ptr);
+
+	cl_git_pass(git_fs_path_apply_relative(&p, "from/here/to/../and/./back/."));
+	cl_assert_equal_s("d:/from/here/and/back/", p.ptr);
+
+
+	cl_git_pass(git_str_sets(&p, "https://my.url.com/test.git"));
+
+	cl_git_pass(git_fs_path_apply_relative(&p, "../another.git"));
+	cl_assert_equal_s("https://my.url.com/another.git", p.ptr);
+
+	cl_git_pass(git_fs_path_apply_relative(&p, "../full/path/url.patch"));
+	cl_assert_equal_s("https://my.url.com/full/path/url.patch", p.ptr);
+
+	cl_git_pass(git_fs_path_apply_relative(&p, ".."));
+	cl_assert_equal_s("https://my.url.com/full/path/", p.ptr);
+
+	cl_git_pass(git_fs_path_apply_relative(&p, "../../../"));
+	cl_assert_equal_s("https://", p.ptr);
+
+
+	cl_git_pass(git_str_sets(&p, "../../this/is/relative"));
+
+	cl_git_pass(git_fs_path_apply_relative(&p, "../../preserves/the/prefix"));
+	cl_assert_equal_s("../../this/preserves/the/prefix", p.ptr);
+
+	cl_git_pass(git_fs_path_apply_relative(&p, "../../../../that"));
+	cl_assert_equal_s("../../that", p.ptr);
+
+	cl_git_pass(git_fs_path_apply_relative(&p, "../there"));
+	cl_assert_equal_s("../../there", p.ptr);
+	git_str_dispose(&p);
+}
+
+static void assert_resolve_relative(
+	git_str *buf, const char *expected, const char *path)
+{
+	cl_git_pass(git_str_sets(buf, path));
+	cl_git_pass(git_fs_path_resolve_relative(buf, 0));
+	cl_assert_equal_s(expected, buf->ptr);
+}
+
+void test_path_core__15_resolve_relative(void)
+{
+	git_str buf = GIT_STR_INIT;
+
+	assert_resolve_relative(&buf, "", "");
+	assert_resolve_relative(&buf, "", ".");
+	assert_resolve_relative(&buf, "", "./");
+	assert_resolve_relative(&buf, "..", "..");
+	assert_resolve_relative(&buf, "../", "../");
+	assert_resolve_relative(&buf, "..", "./..");
+	assert_resolve_relative(&buf, "../", "./../");
+	assert_resolve_relative(&buf, "../", "../.");
+	assert_resolve_relative(&buf, "../", ".././");
+	assert_resolve_relative(&buf, "../..", "../..");
+	assert_resolve_relative(&buf, "../../", "../../");
+
+	assert_resolve_relative(&buf, "/", "/");
+	assert_resolve_relative(&buf, "/", "/.");
+
+	assert_resolve_relative(&buf, "", "a/..");
+	assert_resolve_relative(&buf, "", "a/../");
+	assert_resolve_relative(&buf, "", "a/../.");
+
+	assert_resolve_relative(&buf, "/a", "/a");
+	assert_resolve_relative(&buf, "/a/", "/a/.");
+	assert_resolve_relative(&buf, "/", "/a/../");
+	assert_resolve_relative(&buf, "/", "/a/../.");
+	assert_resolve_relative(&buf, "/", "/a/.././");
+
+	assert_resolve_relative(&buf, "a", "a");
+	assert_resolve_relative(&buf, "a/", "a/");
+	assert_resolve_relative(&buf, "a/", "a/.");
+	assert_resolve_relative(&buf, "a/", "a/./");
+
+	assert_resolve_relative(&buf, "a/b", "a//b");
+	assert_resolve_relative(&buf, "a/b/c", "a/b/c");
+	assert_resolve_relative(&buf, "b/c", "./b/c");
+	assert_resolve_relative(&buf, "a/c", "a/./c");
+	assert_resolve_relative(&buf, "a/b/", "a/b/.");
+
+	assert_resolve_relative(&buf, "/a/b/c", "///a/b/c");
+	assert_resolve_relative(&buf, "/", "////");
+	assert_resolve_relative(&buf, "/a", "///a");
+	assert_resolve_relative(&buf, "/", "///.");
+	assert_resolve_relative(&buf, "/", "///a/..");
+
+	assert_resolve_relative(&buf, "../../path", "../../test//../././path");
+	assert_resolve_relative(&buf, "../d", "a/b/../../../c/../d");
+
+	cl_git_pass(git_str_sets(&buf, "/.."));
+	cl_git_fail(git_fs_path_resolve_relative(&buf, 0));
+
+	cl_git_pass(git_str_sets(&buf, "/./.."));
+	cl_git_fail(git_fs_path_resolve_relative(&buf, 0));
+
+	cl_git_pass(git_str_sets(&buf, "/.//.."));
+	cl_git_fail(git_fs_path_resolve_relative(&buf, 0));
+
+	cl_git_pass(git_str_sets(&buf, "/../."));
+	cl_git_fail(git_fs_path_resolve_relative(&buf, 0));
+
+	cl_git_pass(git_str_sets(&buf, "/../.././../a"));
+	cl_git_fail(git_fs_path_resolve_relative(&buf, 0));
+
+	cl_git_pass(git_str_sets(&buf, "////.."));
+	cl_git_fail(git_fs_path_resolve_relative(&buf, 0));
+
+	/* things that start with Windows network paths */
+#ifdef GIT_WIN32
+	assert_resolve_relative(&buf, "//a/b/c", "//a/b/c");
+	assert_resolve_relative(&buf, "//a/", "//a/b/..");
+	assert_resolve_relative(&buf, "//a/b/c", "//a/Q/../b/x/y/../../c");
+
+	cl_git_pass(git_str_sets(&buf, "//a/b/../.."));
+	cl_git_fail(git_fs_path_resolve_relative(&buf, 0));
+#else
+	assert_resolve_relative(&buf, "/a/b/c", "//a/b/c");
+	assert_resolve_relative(&buf, "/a/", "//a/b/..");
+	assert_resolve_relative(&buf, "/a/b/c", "//a/Q/../b/x/y/../../c");
+	assert_resolve_relative(&buf, "/", "//a/b/../..");
+#endif
+
+	git_str_dispose(&buf);
+}
+
+#define assert_common_dirlen(i, p, q) \
+	cl_assert_equal_i((i), git_fs_path_common_dirlen((p), (q)));
+
+void test_path_core__16_resolve_relative(void)
+{
+	assert_common_dirlen(0, "", "");
+	assert_common_dirlen(0, "", "bar.txt");
+	assert_common_dirlen(0, "foo.txt", "bar.txt");
+	assert_common_dirlen(0, "foo.txt", "");
+	assert_common_dirlen(0, "foo/bar.txt", "bar/foo.txt");
+	assert_common_dirlen(0, "foo/bar.txt", "../foo.txt");
+
+	assert_common_dirlen(1, "/one.txt", "/two.txt");
+	assert_common_dirlen(4, "foo/one.txt", "foo/two.txt");
+	assert_common_dirlen(5, "/foo/one.txt", "/foo/two.txt");
+
+	assert_common_dirlen(6, "a/b/c/foo.txt", "a/b/c/d/e/bar.txt");
+	assert_common_dirlen(7, "/a/b/c/foo.txt", "/a/b/c/d/e/bar.txt");
+}
+
+static void fix_path(git_str *s)
+{
+#ifndef GIT_WIN32
+	GIT_UNUSED(s);
+#else
+	char* c;
+
+	for (c = s->ptr; *c; c++) {
+		if (*c == '/')
+			*c = '\\';
+	}
+#endif
+}
+
+void test_path_core__find_exe_in_path(void)
+{
+	char *orig_path;
+	git_str sandbox_path = GIT_STR_INIT;
+	git_str new_path = GIT_STR_INIT, full_path = GIT_STR_INIT,
+	        dummy_path = GIT_STR_INIT;
+
+#ifdef GIT_WIN32
+	static const char *bogus_path_1 = "c:\\does\\not\\exist\\";
+	static const char *bogus_path_2 = "e:\\non\\existent";
+#else
+	static const char *bogus_path_1 = "/this/path/does/not/exist/";
+	static const char *bogus_path_2 = "/non/existent";
+#endif
+
+	orig_path = cl_getenv("PATH");
+
+	git_str_puts(&sandbox_path, clar_sandbox_path());
+	git_str_joinpath(&dummy_path, sandbox_path.ptr, "dummmmmmmy_libgit2_file");
+	cl_git_rewritefile(dummy_path.ptr, "this is a dummy file");
+
+	fix_path(&sandbox_path);
+	fix_path(&dummy_path);
+
+	cl_git_pass(git_str_printf(&new_path, "%s%c%s%c%s%c%s",
+		bogus_path_1, GIT_PATH_LIST_SEPARATOR,
+		orig_path, GIT_PATH_LIST_SEPARATOR,
+		sandbox_path.ptr, GIT_PATH_LIST_SEPARATOR,
+		bogus_path_2));
+
+	check_setenv("PATH", new_path.ptr);
+
+	cl_git_fail_with(GIT_ENOTFOUND, git_fs_path_find_executable(&full_path, "this_file_does_not_exist"));
+	cl_git_pass(git_fs_path_find_executable(&full_path, "dummmmmmmy_libgit2_file"));
+
+	cl_assert_equal_s(full_path.ptr, dummy_path.ptr);
+
+	git_str_dispose(&full_path);
+	git_str_dispose(&new_path);
+	git_str_dispose(&dummy_path);
+	git_str_dispose(&sandbox_path);
+	git__free(orig_path);
+}
+
+void test_path_core__validate_current_user_ownership(void)
+{
+	bool is_cur;
+
+	cl_must_pass(p_mkdir("testdir", 0777));
+	cl_git_pass(git_fs_path_owner_is_current_user(&is_cur, "testdir"));
+	cl_assert_equal_i(is_cur, 1);
+
+	cl_git_rewritefile("testfile", "This is a test file.");
+	cl_git_pass(git_fs_path_owner_is_current_user(&is_cur, "testfile"));
+	cl_assert_equal_i(is_cur, 1);
+
+#ifdef GIT_WIN32
+	cl_git_pass(git_fs_path_owner_is_current_user(&is_cur, "C:\\"));
+	cl_assert_equal_i(is_cur, 0);
+
+	cl_git_fail(git_fs_path_owner_is_current_user(&is_cur, "c:\\path\\does\\not\\exist"));
+#else
+	cl_git_pass(git_fs_path_owner_is_current_user(&is_cur, "/"));
+	cl_assert_equal_i(is_cur, (geteuid() == 0));
+
+	cl_git_fail(git_fs_path_owner_is_current_user(&is_cur, "/path/does/not/exist"));
+#endif
+}
+
+void test_path_core__dirlen(void)
+{
+	cl_assert_equal_sz(13, git_fs_path_dirlen("/foo/bar/asdf"));
+	cl_assert_equal_sz(13, git_fs_path_dirlen("/foo/bar/asdf/"));
+	cl_assert_equal_sz(13, git_fs_path_dirlen("/foo/bar/asdf//"));
+	cl_assert_equal_sz(3, git_fs_path_dirlen("foo////"));
+	cl_assert_equal_sz(3, git_fs_path_dirlen("foo"));
+	cl_assert_equal_sz(1, git_fs_path_dirlen("/"));
+	cl_assert_equal_sz(1, git_fs_path_dirlen("////"));
+	cl_assert_equal_sz(0, git_fs_path_dirlen(""));
+}
+
 static void test_make_relative(
 	const char *expected_path,
 	const char *path,
@@ -341,3 +1119,29 @@ void test_path_core__join_unrooted_respects_funny_windows_roots(void)
 	test_join_unrooted("💩:/foo/bar/foobar", 13, "💩:/foo/bar/foobar", "💩:/foo/bar");
 	test_join_unrooted("💩:/foo/bar/foobar", 9, "💩:/foo/bar/foobar", "💩:/foo/");
 }
+
+void test_path_core__is_root(void)
+{
+	cl_assert_equal_b(true,  git_fs_path_is_root("/"));
+	cl_assert_equal_b(false, git_fs_path_is_root("//"));
+	cl_assert_equal_b(false, git_fs_path_is_root("foo/"));
+	cl_assert_equal_b(false, git_fs_path_is_root("/foo/"));
+	cl_assert_equal_b(false, git_fs_path_is_root("/foo"));
+	cl_assert_equal_b(false, git_fs_path_is_root("\\"));
+
+#ifdef GIT_WIN32
+	cl_assert_equal_b(true,  git_fs_path_is_root("A:\\"));
+	cl_assert_equal_b(false, git_fs_path_is_root("B:\\foo"));
+	cl_assert_equal_b(false, git_fs_path_is_root("B:\\foo\\"));
+	cl_assert_equal_b(true,  git_fs_path_is_root("C:\\"));
+	cl_assert_equal_b(true,  git_fs_path_is_root("c:\\"));
+	cl_assert_equal_b(true,  git_fs_path_is_root("z:\\"));
+	cl_assert_equal_b(false, git_fs_path_is_root("z:\\\\"));
+	cl_assert_equal_b(false, git_fs_path_is_root("\\\\localhost"));
+	cl_assert_equal_b(false, git_fs_path_is_root("\\\\localhost\\"));
+	cl_assert_equal_b(false, git_fs_path_is_root("\\\\localhost\\c$\\"));
+	cl_assert_equal_b(false, git_fs_path_is_root("\\\\localhost\\c$\\Foo"));
+	cl_assert_equal_b(false, git_fs_path_is_root("\\\\localhost\\c$\\Foo\\"));
+	cl_assert_equal_b(false, git_fs_path_is_root("\\\\Volume\\12345\\Foo\\Bar.txt"));
+#endif
+}
diff --git a/tests/util/path/win32.c b/tests/util/path/win32.c
index 1aaf686..6f90b44 100644
--- a/tests/util/path/win32.c
+++ b/tests/util/path/win32.c
@@ -278,5 +278,38 @@ void test_path_win32__8dot3_name(void)
 	cl_must_pass(p_mkdir(".bar", 0777));
 	cl_assert_equal_s("BAR~2", (shortname = git_win32_path_8dot3_name(".bar")));
 	git__free(shortname);
+
+	p_rmdir(".foo");
+	p_rmdir(".bar");
+	p_unlink("bar~1");
+#endif
+}
+
+void test_path_win32__realpath(void)
+{
+#ifdef GIT_WIN32
+	git_str expected = GIT_STR_INIT;
+	char result[GIT_PATH_MAX];
+
+	/* Ensure relative paths become absolute */
+	cl_must_pass(git_str_joinpath(&expected, clar_sandbox_path(), "abcdef"));
+	cl_must_pass(p_mkdir("abcdef", 0777));
+	cl_assert(p_realpath("./abcdef", result) != NULL);
+	cl_assert_equal_s(expected.ptr, result);
+
+	/* Ensure case is canonicalized */
+	git_str_clear(&expected);
+	cl_must_pass(git_str_joinpath(&expected, clar_sandbox_path(), "FOO"));
+	cl_must_pass(p_mkdir("FOO", 0777));
+	cl_assert(p_realpath("foo", result) != NULL);
+	cl_assert_equal_s(expected.ptr, result);
+
+	cl_assert(p_realpath("nonexistent", result) == NULL);
+	cl_assert_equal_i(ENOENT, errno);
+
+	git_str_dispose(&expected);
+
+	p_rmdir("abcdef");
+	p_rmdir("FOO");
 #endif
 }