diff --git a/src/css.rs b/src/css.rs
index a1205a9..f5184c4 100644
--- a/src/css.rs
+++ b/src/css.rs
@@ -6,7 +6,7 @@ use std::collections::HashMap;
 use url::Url;
 
 use crate::opts::Options;
-use crate::url::{data_to_data_url, resolve_url};
+use crate::url::{create_data_url, resolve_url};
 use crate::utils::retrieve_asset;
 
 const CSS_PROPS_WITH_IMAGE_URLS: &[&str] = &[
@@ -55,14 +55,6 @@ pub fn embed_css(
     .unwrap()
 }
 
-pub fn enquote(input: String, double: bool) -> String {
-    if double {
-        format!("\"{}\"", input.replace("\"", "\\\""))
-    } else {
-        format!("'{}'", input.replace("'", "\\'"))
-    }
-}
-
 pub fn format_ident(ident: &str) -> String {
     let mut res: String = String::new();
     let _ = serialize_identifier(ident, &mut res);
@@ -206,7 +198,7 @@ pub fn process_css<'a>(
                         depth + 1,
                     ) {
                         Ok((import_contents, import_final_url, _import_media_type)) => {
-                            let mut import_data_url = data_to_data_url(
+                            let mut import_data_url = create_data_url(
                                 "text/css",
                                 embed_css(
                                     cache,
@@ -220,15 +212,18 @@ pub fn process_css<'a>(
                                 &import_final_url,
                             );
                             import_data_url.set_fragment(import_full_url.fragment());
-                            result.push_str(enquote(import_data_url.to_string(), false).as_str());
+                            result.push_str(
+                                format_quoted_string(&import_data_url.to_string()).as_str(),
+                            );
                         }
                         Err(_) => {
                             // Keep remote reference if unable to retrieve the asset
                             if import_full_url.scheme() == "http"
                                 || import_full_url.scheme() == "https"
                             {
-                                result
-                                    .push_str(enquote(import_full_url.to_string(), false).as_str());
+                                result.push_str(
+                                    format_quoted_string(&import_full_url.to_string()).as_str(),
+                                );
                             }
                         }
                     }
@@ -240,7 +235,7 @@ pub fn process_css<'a>(
                         }
 
                         if options.no_images && is_image_url_prop(curr_prop.as_str()) {
-                            result.push_str(enquote(str!(empty_image!()), false).as_str());
+                            result.push_str(format_quoted_string(empty_image!()).as_str());
                         } else {
                             let resolved_url: Url = resolve_url(&document_url, value);
                             match retrieve_asset(
@@ -253,9 +248,11 @@ pub fn process_css<'a>(
                             ) {
                                 Ok((data, final_url, media_type)) => {
                                     let mut data_url =
-                                        data_to_data_url(&media_type, &data, &final_url);
+                                        create_data_url(&media_type, &data, &final_url);
                                     data_url.set_fragment(resolved_url.fragment());
-                                    result.push_str(enquote(data_url.to_string(), false).as_str());
+                                    result.push_str(
+                                        format_quoted_string(&data_url.to_string()).as_str(),
+                                    );
                                 }
                                 Err(_) => {
                                     // Keep remote reference if unable to retrieve the asset
@@ -263,7 +260,8 @@ pub fn process_css<'a>(
                                         || resolved_url.scheme() == "https"
                                     {
                                         result.push_str(
-                                            enquote(resolved_url.to_string(), false).as_str(),
+                                            format_quoted_string(&resolved_url.to_string())
+                                                .as_str(),
                                         );
                                     }
                                 }
@@ -345,7 +343,7 @@ pub fn process_css<'a>(
                         depth + 1,
                     ) {
                         Ok((css, final_url, _media_type)) => {
-                            let mut data_url = data_to_data_url(
+                            let mut data_url = create_data_url(
                                 "text/css",
                                 embed_css(
                                     cache,
@@ -359,18 +357,19 @@ pub fn process_css<'a>(
                                 &final_url,
                             );
                             data_url.set_fragment(full_url.fragment());
-                            result.push_str(enquote(data_url.to_string(), false).as_str());
+                            result.push_str(format_quoted_string(&data_url.to_string()).as_str());
                         }
                         Err(_) => {
                             // Keep remote reference if unable to retrieve the asset
                             if full_url.scheme() == "http" || full_url.scheme() == "https" {
-                                result.push_str(enquote(full_url.to_string(), false).as_str());
+                                result
+                                    .push_str(format_quoted_string(&full_url.to_string()).as_str());
                             }
                         }
                     }
                 } else {
                     if is_image_url_prop(curr_prop.as_str()) && options.no_images {
-                        result.push_str(enquote(str!(empty_image!()), false).as_str());
+                        result.push_str(format_quoted_string(empty_image!()).as_str());
                     } else {
                         let full_url: Url = resolve_url(&document_url, value);
                         match retrieve_asset(
@@ -382,14 +381,17 @@ pub fn process_css<'a>(
                             depth + 1,
                         ) {
                             Ok((data, final_url, media_type)) => {
-                                let mut data_url = data_to_data_url(&media_type, &data, &final_url);
+                                let mut data_url = create_data_url(&media_type, &data, &final_url);
                                 data_url.set_fragment(full_url.fragment());
-                                result.push_str(enquote(data_url.to_string(), false).as_str());
+                                result
+                                    .push_str(format_quoted_string(&data_url.to_string()).as_str());
                             }
                             Err(_) => {
                                 // Keep remote reference if unable to retrieve the asset
                                 if full_url.scheme() == "http" || full_url.scheme() == "https" {
-                                    result.push_str(enquote(full_url.to_string(), false).as_str());
+                                    result.push_str(
+                                        format_quoted_string(&full_url.to_string()).as_str(),
+                                    );
                                 }
                             }
                         }
diff --git a/src/html.rs b/src/html.rs
index 17524fb..40eb35d 100644
--- a/src/html.rs
+++ b/src/html.rs
@@ -17,7 +17,7 @@ use std::default::Default;
 use crate::css::embed_css;
 use crate::js::attr_is_event_handler;
 use crate::opts::Options;
-use crate::url::{clean_url, data_to_data_url, is_url_and_has_protocol, resolve_url};
+use crate::url::{clean_url, create_data_url, is_url_and_has_protocol, resolve_url};
 use crate::utils::retrieve_asset;
 
 struct SrcSetItem<'a> {
@@ -190,7 +190,7 @@ pub fn embed_srcset(
             ) {
                 Ok((image_data, image_final_url, image_media_type)) => {
                     let mut image_data_url =
-                        data_to_data_url(&image_media_type, &image_data, &image_final_url);
+                        create_data_url(&image_media_type, &image_data, &image_final_url);
                     // Append retreved asset as a data URL
                     image_data_url.set_fragment(image_full_url.fragment());
                     result.push_str(image_data_url.as_ref());
@@ -534,7 +534,7 @@ pub fn retrieve_and_embed_asset(
                             options,
                             depth + 1,
                         );
-                        let css_data_url = data_to_data_url("text/css", css.as_bytes(), &final_url);
+                        let css_data_url = create_data_url("text/css", css.as_bytes(), &final_url);
 
                         set_node_attr(&node, attr_name, Some(css_data_url.to_string()));
 
@@ -559,7 +559,7 @@ pub fn retrieve_and_embed_asset(
                     )
                     .unwrap();
 
-                    let mut frame_data_url = data_to_data_url(&media_type, &frame_data, &final_url);
+                    let mut frame_data_url = create_data_url(&media_type, &frame_data, &final_url);
 
                     frame_data_url.set_fragment(resolved_url.fragment());
 
@@ -572,7 +572,7 @@ pub fn retrieve_and_embed_asset(
                 if node_name == "script" {
                     media_type = "application/javascript".to_string();
                 }
-                let mut data_url = data_to_data_url(&media_type, &data, &final_url);
+                let mut data_url = create_data_url(&media_type, &data, &final_url);
                 data_url.set_fragment(resolved_url.fragment());
                 set_node_attr(node, attr_name, Some(data_url.to_string()));
             }
diff --git a/src/main.rs b/src/main.rs
index d04fba6..23e245b 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -13,7 +13,7 @@ use monolith::html::{
     stringify_document, walk_and_embed_assets,
 };
 use monolith::opts::Options;
-use monolith::url::{data_to_data_url, parse_data_url, resolve_url};
+use monolith::url::{create_data_url, parse_data_url, resolve_url};
 use monolith::utils::retrieve_asset;
 
 mod macros;
@@ -266,7 +266,7 @@ fn main() {
             0,
         ) {
             Ok((data, final_url, media_type)) => {
-                let favicon_data_url: Url = data_to_data_url(&media_type, &data, &final_url);
+                let favicon_data_url: Url = create_data_url(&media_type, &data, &final_url);
                 dom = add_favicon(&dom.document, favicon_data_url.to_string());
             }
             Err(_) => {
diff --git a/src/tests/cli/basic.rs b/src/tests/cli/basic.rs
index 60ae9da..0e0d5d6 100644
--- a/src/tests/cli/basic.rs
+++ b/src/tests/cli/basic.rs
@@ -71,7 +71,7 @@ mod passing {
         // STDOUT should contain embedded CSS url()'s
         assert_eq!(
             std::str::from_utf8(&out.stdout).unwrap(),
-            "<html><head><style>\n\n    @charset \"UTF-8\";\n\n    @import \'data:text/css;base64,Ym9keXtiYWNrZ3JvdW5kLWNvbG9yOiMwMDA7Y29sb3I6I2ZmZn0K\';\n\n    @import url(\'data:text/css;base64,Ym9keXtiYWNrZ3JvdW5kLWNvbG9yOiMwMDA7Y29sb3I6I2ZmZn0K\');\n\n    @import url(\'data:text/css;base64,Ym9keXtiYWNrZ3JvdW5kLWNvbG9yOiMwMDA7Y29sb3I6I2ZmZn0K\');\n\n</style>\n</head><body></body></html>\n"
+            "<html><head><style>\n\n    @charset \"UTF-8\";\n\n    @import \"data:text/css;base64,Ym9keXtiYWNrZ3JvdW5kLWNvbG9yOiMwMDA7Y29sb3I6I2ZmZn0K\";\n\n    @import url(\"data:text/css;base64,Ym9keXtiYWNrZ3JvdW5kLWNvbG9yOiMwMDA7Y29sb3I6I2ZmZn0K\");\n\n    @import url(\"data:text/css;base64,Ym9keXtiYWNrZ3JvdW5kLWNvbG9yOiMwMDA7Y29sb3I6I2ZmZn0K\");\n\n</style>\n</head><body></body></html>\n"
         );
 
         // STDERR should list files that got retrieved
diff --git a/src/tests/cli/local_files.rs b/src/tests/cli/local_files.rs
index 1ee2280..4c3465f 100644
--- a/src/tests/cli/local_files.rs
+++ b/src/tests/cli/local_files.rs
@@ -193,7 +193,7 @@ mod passing {
         // STDOUT should contain HTML with date URL for background-image in it
         assert_eq!(
             std::str::from_utf8(&out.stdout).unwrap(),
-            "<html><head></head><body><div style=\"background-image: url('data:image/svg+xml;base64,PHN2ZyB2ZXJzaW9uPSIxLjEiIGJhc2VQcm9maWxlPSJmdWxsIiB3aWR0aD0iMzAwIiBoZWlnaHQ9IjIwMCIgeG1sbnM9Imh0dHA6Ly93d3cudzMub3JnLzIwMDAvc3ZnIj4KICAgIDxyZWN0IHdpZHRoPSIxMDAlIiBoZWlnaHQ9IjEwMCUiIGZpbGw9InJlZCIgLz4KICAgIDxjaXJjbGUgY3g9IjE1MCIgY3k9IjEwMCIgcj0iODAiIGZpbGw9ImdyZWVuIiAvPgogICAgPHRleHQgeD0iMTUwIiB5PSIxMjUiIGZvbnQtc2l6ZT0iNjAiIHRleHQtYW5jaG9yPSJtaWRkbGUiIGZpbGw9IndoaXRlIj5TVkc8L3RleHQ+Cjwvc3ZnPgo=')\"></div>\n</body></html>\n"
+            "<html><head></head><body><div style=\"background-image: url(&quot;data:image/svg+xml;base64,PHN2ZyB2ZXJzaW9uPSIxLjEiIGJhc2VQcm9maWxlPSJmdWxsIiB3aWR0aD0iMzAwIiBoZWlnaHQ9IjIwMCIgeG1sbnM9Imh0dHA6Ly93d3cudzMub3JnLzIwMDAvc3ZnIj4KICAgIDxyZWN0IHdpZHRoPSIxMDAlIiBoZWlnaHQ9IjEwMCUiIGZpbGw9InJlZCIgLz4KICAgIDxjaXJjbGUgY3g9IjE1MCIgY3k9IjEwMCIgcj0iODAiIGZpbGw9ImdyZWVuIiAvPgogICAgPHRleHQgeD0iMTUwIiB5PSIxMjUiIGZvbnQtc2l6ZT0iNjAiIHRleHQtYW5jaG9yPSJtaWRkbGUiIGZpbGw9IndoaXRlIj5TVkc8L3RleHQ+Cjwvc3ZnPgo=&quot;)\"></div>\n</body></html>\n"
         );
 
         // STDERR should list files that got retrieved
diff --git a/src/tests/css/embed_css.rs b/src/tests/css/embed_css.rs
index bd51b2c..760598c 100644
--- a/src/tests/css/embed_css.rs
+++ b/src/tests/css/embed_css.rs
@@ -61,8 +61,8 @@ mod passing {
             css::embed_css(cache, &client, &document_url, &STYLE, &options, 0,),
             format!(
                 "/* border: none;*/\
-                background-image: url('{empty_image}'); \
-                list-style: url('{empty_image}');\
+                background-image: url(\"{empty_image}\"); \
+                list-style: url(\"{empty_image}\");\
                 width:99.998%; \
                 margin-top: -20px; \
                 line-height: -1; \
@@ -93,8 +93,8 @@ mod passing {
             css::embed_css(cache, &client, &document_url, &STYLE, &options, 0),
             format!(
                 "/* border: none;*/\
-                background-image: url('{empty_image}'); \
-                list-style: url('{empty_image}');\
+                background-image: url(\"{empty_image}\"); \
+                list-style: url(\"{empty_image}\");\
                 width:99.998%; \
                 margin-top: -20px; \
                 line-height: -1; \
@@ -115,7 +115,7 @@ mod passing {
         const CSS: &str = "\
             #id.class-name:not(:nth-child(3n+0)) {\n  \
             // border: none;\n  \
-            background-image: url('data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAQAAAC1HAwCAAAAC0lEQVR42mNkYAAAAAYAAjCB0C8AAAAASUVORK5CYII=');\n\
+            background-image: url(\"data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAQAAAC1HAwCAAAAC0lEQVR42mNkYAAAAAYAAjCB0C8AAAAASUVORK5CYII=\");\n\
             }\n\
             \n\
             html > body {}";
@@ -191,9 +191,9 @@ mod passing {
             "\
             @charset \"UTF-8\";\n\
             \n\
-            @import 'data:text/css;base64,aHRtbHtiYWNrZ3JvdW5kLWNvbG9yOiMwMDB9';\n\
+            @import \"data:text/css;base64,aHRtbHtiYWNrZ3JvdW5kLWNvbG9yOiMwMDB9\";\n\
             \n\
-            @import url('data:text/css;base64,aHRtbHtjb2xvcjojZmZmfQ==')\n\
+            @import url(\"data:text/css;base64,aHRtbHtjb2xvcjojZmZmfQ==\")\n\
             "
         );
     }
@@ -331,7 +331,7 @@ mod passing {
             ";
         const CSS_OUT: &str = "\
             #language a[href=\"#translations\"]:before {\n\
-                content: url('data:;base64,') \"\\a \";\n\
+                content: url(\"data:;base64,\") \"\\a \";\n\
                 white-space: pre }\n\
             ";
 
diff --git a/src/tests/css/enquote.rs b/src/tests/css/enquote.rs
deleted file mode 100644
index d02a868..0000000
--- a/src/tests/css/enquote.rs
+++ /dev/null
@@ -1,53 +0,0 @@
-//  ██████╗  █████╗ ███████╗███████╗██╗███╗   ██╗ ██████╗
-//  ██╔══██╗██╔══██╗██╔════╝██╔════╝██║████╗  ██║██╔════╝
-//  ██████╔╝███████║███████╗███████╗██║██╔██╗ ██║██║  ███╗
-//  ██╔═══╝ ██╔══██║╚════██║╚════██║██║██║╚██╗██║██║   ██║
-//  ██║     ██║  ██║███████║███████║██║██║ ╚████║╚██████╔╝
-//  ╚═╝     ╚═╝  ╚═╝╚══════╝╚══════╝╚═╝╚═╝  ╚═══╝ ╚═════╝
-
-#[cfg(test)]
-mod passing {
-    use crate::css;
-
-    #[test]
-    fn empty_input_single_quotes() {
-        assert_eq!(css::enquote(str!(""), false), "''");
-    }
-
-    #[test]
-    fn empty_input_double_quotes() {
-        assert_eq!(css::enquote(str!(""), true), "\"\"");
-    }
-
-    #[test]
-    fn apostrophes_single_quotes() {
-        assert_eq!(
-            css::enquote(str!("It's a lovely day, don't you think?"), false),
-            "'It\\'s a lovely day, don\\'t you think?'"
-        );
-    }
-
-    #[test]
-    fn apostrophes_double_quotes() {
-        assert_eq!(
-            css::enquote(str!("It's a lovely day, don't you think?"), true),
-            "\"It's a lovely day, don't you think?\""
-        );
-    }
-
-    #[test]
-    fn feet_and_inches_single_quotes() {
-        assert_eq!(
-            css::enquote(str!("5'2\", 6'5\""), false),
-            "'5\\'2\", 6\\'5\"'"
-        );
-    }
-
-    #[test]
-    fn feet_and_inches_double_quotes() {
-        assert_eq!(
-            css::enquote(str!("5'2\", 6'5\""), true),
-            "\"5'2\\\", 6'5\\\"\""
-        );
-    }
-}
diff --git a/src/tests/css/mod.rs b/src/tests/css/mod.rs
index 5f17fd3..15775b5 100644
--- a/src/tests/css/mod.rs
+++ b/src/tests/css/mod.rs
@@ -1,3 +1,2 @@
 mod embed_css;
-mod enquote;
 mod is_image_url_prop;
diff --git a/src/tests/url/data_to_data_url.rs b/src/tests/url/create_data_url.rs
similarity index 91%
rename from src/tests/url/data_to_data_url.rs
rename to src/tests/url/create_data_url.rs
index bac0126..873dbda 100644
--- a/src/tests/url/data_to_data_url.rs
+++ b/src/tests/url/create_data_url.rs
@@ -15,7 +15,7 @@ mod passing {
     fn encode_string_with_specific_media_type() {
         let mime = "application/javascript";
         let data = "var word = 'hello';\nalert(word);\n";
-        let data_url = url::data_to_data_url(mime, data.as_bytes(), &Url::parse("data:,").unwrap());
+        let data_url = url::create_data_url(mime, data.as_bytes(), &Url::parse("data:,").unwrap());
 
         assert_eq!(
             data_url.as_str(),
@@ -26,7 +26,7 @@ mod passing {
     #[test]
     fn encode_append_fragment() {
         let data = "<svg></svg>\n";
-        let data_url = url::data_to_data_url(
+        let data_url = url::create_data_url(
             "image/svg+xml",
             data.as_bytes(),
             &Url::parse("data:,").unwrap(),
diff --git a/src/tests/url/is_http_or_https_url.rs b/src/tests/url/is_http_or_https_url.rs
deleted file mode 100644
index 1e0a579..0000000
--- a/src/tests/url/is_http_or_https_url.rs
+++ /dev/null
@@ -1,69 +0,0 @@
-//  ██████╗  █████╗ ███████╗███████╗██╗███╗   ██╗ ██████╗
-//  ██╔══██╗██╔══██╗██╔════╝██╔════╝██║████╗  ██║██╔════╝
-//  ██████╔╝███████║███████╗███████╗██║██╔██╗ ██║██║  ███╗
-//  ██╔═══╝ ██╔══██║╚════██║╚════██║██║██║╚██╗██║██║   ██║
-//  ██║     ██║  ██║███████║███████║██║██║ ╚████║╚██████╔╝
-//  ╚═╝     ╚═╝  ╚═╝╚══════╝╚══════╝╚═╝╚═╝  ╚═══╝ ╚═════╝
-
-#[cfg(test)]
-mod passing {
-    use reqwest::Url;
-
-    use crate::url;
-
-    #[test]
-    fn http_url() {
-        assert!(url::is_http_or_https_url(&Url::parse("http://kernel.org").unwrap()));
-    }
-
-    #[test]
-    fn https_url() {
-        assert!(url::is_http_or_https_url(&Url::parse("https://www.rust-lang.org/").unwrap()));
-    }
-
-    #[test]
-    fn http_url_with_backslashes() {
-        assert!(url::is_http_or_https_url(&Url::parse("http:\\\\freebsd.org\\").unwrap()));
-    }
-}
-
-//  ███████╗ █████╗ ██╗██╗     ██╗███╗   ██╗ ██████╗
-//  ██╔════╝██╔══██╗██║██║     ██║████╗  ██║██╔════╝
-//  █████╗  ███████║██║██║     ██║██╔██╗ ██║██║  ███╗
-//  ██╔══╝  ██╔══██║██║██║     ██║██║╚██╗██║██║   ██║
-//  ██║     ██║  ██║██║███████╗██║██║ ╚████║╚██████╔╝
-//  ╚═╝     ╚═╝  ╚═╝╚═╝╚══════╝╚═╝╚═╝  ╚═══╝ ╚═════╝
-
-#[cfg(test)]
-mod failing {
-    use reqwest::Url;
-
-    use crate::url;
-
-    #[test]
-    fn url_with_no_protocol() {
-        assert!(!url::is_http_or_https_url(&Url::parse("//kernel.org").unwrap()));
-    }
-
-    #[test]
-    fn dot_slash_filename() {
-        assert!(!url::is_http_or_https_url(&Url::parse("./index.html").unwrap()));
-    }
-
-    #[test]
-    fn just_filename() {
-        assert!(!url::is_http_or_https_url(&Url::parse("some-local-page.htm").unwrap()));
-    }
-
-    #[test]
-    fn https_ip_port_url() {
-        assert!(!url::is_http_or_https_url(&Url::parse("ftp://1.2.3.4/www/index.html").unwrap()));
-    }
-
-    #[test]
-    fn data_url() {
-        assert!(!url::is_http_or_https_url(
-            &Url::parse("data:text/html;base64,V2VsY29tZSBUbyBUaGUgUGFydHksIDxiPlBhbDwvYj4h").unwrap()
-        ));
-    }
-}
diff --git a/src/tests/url/is_url_and_has_protocol.rs b/src/tests/url/is_url_and_has_protocol.rs
index cae497a..a46690b 100644
--- a/src/tests/url/is_url_and_has_protocol.rs
+++ b/src/tests/url/is_url_and_has_protocol.rs
@@ -48,6 +48,11 @@ mod passing {
         assert!(url::is_url_and_has_protocol("https://github.com"));
     }
 
+    #[test]
+    fn file() {
+        assert!(url::is_url_and_has_protocol("file:///tmp/image.png"));
+    }
+
     #[test]
     fn mailto_uppercase() {
         assert!(url::is_url_and_has_protocol(
@@ -59,6 +64,11 @@ mod passing {
     fn empty_data_url() {
         assert!(url::is_url_and_has_protocol("data:text/html,"));
     }
+
+    #[test]
+    fn empty_data_url_surrounded_by_spaces() {
+        assert!(url::is_url_and_has_protocol(" data:text/html, "));
+    }
 }
 
 //  ███████╗ █████╗ ██╗██╗     ██╗███╗   ██╗ ██████╗
@@ -74,25 +84,27 @@ mod failing {
 
     #[test]
     fn url_with_no_protocol() {
-        assert!(!url::is_url_and_has_protocol(
-            "//some-hostname.com/some-file.html"
-        ));
+        assert_eq!(
+            url::is_url_and_has_protocol("//some-hostname.com/some-file.html"),
+            false
+        );
     }
 
     #[test]
     fn relative_path() {
-        assert!(!url::is_url_and_has_protocol(
-            "some-hostname.com/some-file.html"
-        ));
+        assert_eq!(
+            url::is_url_and_has_protocol("some-hostname.com/some-file.html"),
+            false
+        );
     }
 
     #[test]
     fn relative_to_root_path() {
-        assert!(!url::is_url_and_has_protocol("/some-file.html"));
+        assert_eq!(url::is_url_and_has_protocol("/some-file.html"), false);
     }
 
     #[test]
     fn empty_string() {
-        assert!(!url::is_url_and_has_protocol(""));
+        assert_eq!(url::is_url_and_has_protocol(""), false);
     }
 }
diff --git a/src/tests/url/mod.rs b/src/tests/url/mod.rs
index 50efbc6..e99e386 100644
--- a/src/tests/url/mod.rs
+++ b/src/tests/url/mod.rs
@@ -1,5 +1,5 @@
 mod clean_url;
-mod data_to_data_url;
+mod create_data_url;
 mod is_url_and_has_protocol;
 mod parse_data_url;
 mod percent_decode;
diff --git a/src/tests/url/resolve_url.rs b/src/tests/url/resolve_url.rs
index edfe773..4abede9 100644
--- a/src/tests/url/resolve_url.rs
+++ b/src/tests/url/resolve_url.rs
@@ -11,6 +11,34 @@ mod passing {
 
     use crate::url;
 
+    #[test]
+    fn basic_httsp_relative() {
+        assert_eq!(
+            url::resolve_url(
+                &Url::parse("https://www.kernel.org").unwrap(),
+                "category/signatures.html"
+            )
+            .as_str(),
+            Url::parse("https://www.kernel.org/category/signatures.html")
+                .unwrap()
+                .as_str()
+        );
+    }
+
+    #[test]
+    fn basic_httsp_absolute() {
+        assert_eq!(
+            url::resolve_url(
+                &Url::parse("https://www.kernel.org").unwrap(),
+                "/category/signatures.html"
+            )
+            .as_str(),
+            Url::parse("https://www.kernel.org/category/signatures.html")
+                .unwrap()
+                .as_str()
+        );
+    }
+
     #[test]
     fn from_https_to_level_up_relative() {
         assert_eq!(
@@ -50,7 +78,7 @@ mod passing {
     }
 
     #[test]
-    fn from_https_url_to_relative_root_path() {
+    fn from_https_url_to_absolute_path() {
         assert_eq!(
             url::resolve_url(
                 &Url::parse("https://www.kernel.org/category/signatures.html").unwrap(),
@@ -148,22 +176,28 @@ mod passing {
         );
     }
 
-    // #[test]
-    // fn resolve_from_file_url_to_file_url() {
-    //     assert_eq!(
-    //         if cfg!(windows) {
-    //             url::resolve_url(&Url::parse("file:///c:/index.html").unwrap(), "file:///c:/image.png").as_str()
-    //         } else {
-    //             url::resolve_url(&Url::parse("file:///tmp/index.html").unwrap(), "file:///tmp/image.png")
-    //                 .as_str()
-    //         },
-    //         if cfg!(windows) {
-    //             "file:///c:/image.png"
-    //         } else {
-    //             "file:///tmp/image.png"
-    //         }
-    //     );
-    // }
+    #[test]
+    fn resolve_from_file_url_to_file_url() {
+        if cfg!(windows) {
+            assert_eq!(
+                url::resolve_url(
+                    &Url::parse("file:///c:/index.html").unwrap(),
+                    "file:///c:/image.png"
+                )
+                .as_str(),
+                "file:///c:/image.png"
+            );
+        } else {
+            assert_eq!(
+                url::resolve_url(
+                    &Url::parse("file:///tmp/index.html").unwrap(),
+                    "file:///tmp/image.png"
+                )
+                .as_str(),
+                "file:///tmp/image.png"
+            );
+        }
+    }
 }
 
 //  ███████╗ █████╗ ██╗██╗     ██╗███╗   ██╗ ██████╗
diff --git a/src/tests/utils/retrieve_asset.rs b/src/tests/utils/retrieve_asset.rs
index d7f7057..5e975d0 100644
--- a/src/tests/utils/retrieve_asset.rs
+++ b/src/tests/utils/retrieve_asset.rs
@@ -36,8 +36,8 @@ mod passing {
         )
         .unwrap();
         assert_eq!(
-            url::data_to_data_url(&media_type, &data, &final_url),
-            url::data_to_data_url(
+            url::create_data_url(&media_type, &data, &final_url),
+            url::create_data_url(
                 "text/html",
                 "target".as_bytes(),
                 &Url::parse("data:text/html;base64,c291cmNl").unwrap()
@@ -45,7 +45,7 @@ mod passing {
         );
         assert_eq!(
             final_url,
-            url::data_to_data_url(
+            url::create_data_url(
                 "text/html",
                 "target".as_bytes(),
                 &Url::parse("data:text/html;base64,c291cmNl").unwrap()
@@ -85,7 +85,7 @@ mod passing {
             0,
         )
         .unwrap();
-        assert_eq!(url::data_to_data_url("application/javascript", &data, &final_url), Url::parse("data:application/javascript;base64,ZG9jdW1lbnQuYm9keS5zdHlsZS5iYWNrZ3JvdW5kQ29sb3IgPSAiZ3JlZW4iOwpkb2N1bWVudC5ib2R5LnN0eWxlLmNvbG9yID0gInJlZCI7Cg==").unwrap());
+        assert_eq!(url::create_data_url("application/javascript", &data, &final_url), Url::parse("data:application/javascript;base64,ZG9jdW1lbnQuYm9keS5zdHlsZS5iYWNrZ3JvdW5kQ29sb3IgPSAiZ3JlZW4iOwpkb2N1bWVudC5ib2R5LnN0eWxlLmNvbG9yID0gInJlZCI7Cg==").unwrap());
         assert_eq!(
             final_url,
             Url::parse(&format!(
diff --git a/src/url.rs b/src/url.rs
index 002b6c0..878e726 100644
--- a/src/url.rs
+++ b/src/url.rs
@@ -12,7 +12,7 @@ pub fn clean_url(url: Url) -> Url {
     url
 }
 
-pub fn data_to_data_url(media_type: &str, data: &[u8], final_asset_url: &Url) -> Url {
+pub fn create_data_url(media_type: &str, data: &[u8], final_asset_url: &Url) -> Url {
     let media_type: String = if media_type.is_empty() {
         detect_media_type(data, &final_asset_url)
     } else {