add tests for windows filepaths

lychee-lib/src/types/input.rs

@@ -509,4 +509,35 @@ mod tests {
             String::from("http://example.com/")
         );
     }
+
+    // Test proves that a windows filepath is not mistaken for a Url
+    #[test]
+    fn test_windows_style_filepath_not_existing() {
+        let input = Input::new("C:\\example\\project\\here", None, false, None);
+        assert!(input.is_err());
+        let input = input.unwrap_err();
+
+        match input {
+            ErrorKind::InvalidFile(_) => (),
+            _ => panic!("Should have received InvalidFile error"),
+        }
+    }
+
+    // Test proves that one windows, a windows style filepath to an existing file is recognized as a filepath
+    #[cfg(windows)]
+    #[test]
+    fn test_windows_style_filepath_existing() {
+        use std::env::temp_dir;
+        use tempfile::NamedTempFile;
+
+        let dir = temp_dir();
+        let file = NamedTempFile::new_in(dir).unwrap();
+        let path = file.path();
+        let input = Input::new(path.to_str().unwrap(), None, false, None).unwrap();
+
+        match input.source {
+            InputSource::FsPath(_) => (),
+            _ => panic!("Input source should be FsPath but was not"),
+        }
+    }
 }