add Path::is_file() and Path::is_dir()

test/src/test_Path.cc

@@ -61,3 +61,35 @@ TEST(Path_join, does_not_add_extra_slash_when_first_path_already_ends_with_one)
 {
     EXPECT_EQ("/var/run", Path::join("/var/", "run"));
 }
+
+
+TEST(Path_is_file, returns_true_for_file)
+{
+    EXPECT_TRUE(Path::is_file("test/src/test_Path.cc"));
+}
+
+TEST(Path_is_file, returns_false_for_directory)
+{
+    EXPECT_FALSE(Path::is_file("test"));
+}
+
+TEST(Path_is_file, returns_false_for_nonexistent_path)
+{
+    EXPECT_FALSE(Path::is_file("non.existent"));
+}
+
+
+TEST(Path_is_dir, returns_true_for_directory)
+{
+    EXPECT_TRUE(Path::is_dir("test/src"));
+}
+
+TEST(Path_is_dir, returns_false_for_file)
+{
+    EXPECT_FALSE(Path::is_dir("test/src/test_Path.cc"));
+}
+
+TEST(Path_is_dir, returns_false_for_nonexistent_path)
+{
+    EXPECT_FALSE(Path::is_dir("non.existent"));
+}