trim CSS if it contains nothing but whitespaces

2020-06-26 23:22:35 -04:00 · 2020-06-26 23:22:35 -04:00 · 29bf042da0
commit 29bf042da0
parent d67483cf8e
3 changed files with 25 additions and 1 deletions
--- a/src/css.rs
+++ b/src/css.rs
@ -394,6 +394,11 @@ pub fn process_css<'a>(
        }
    }

+    // Ensure empty CSS is really empty
+    if result.len() > 0 && result.trim().len() == 0 {
+        result = result.trim().to_string()
+    }
+
    Ok(result)
 }

--- a/src/tests/cli.rs
+++ b/src/tests/cli.rs
@ -143,7 +143,7 @@ mod passing {
            std::str::from_utf8(&out.stdout).unwrap(),
            "<html><head>\
            <meta http-equiv=\"Content-Security-Policy\" content=\"font-src 'none';\"></meta>\
-            <style> </style>\
+            <style></style>\
            </head><body>Hi</body></html>\n"
        );

--- a/src/tests/css/embed_css.rs
+++ b/src/tests/css/embed_css.rs
@ -22,6 +22,25 @@ mod passing {
        );
    }

+    #[test]
+    fn trim_if_empty() {
+        let cache = &mut HashMap::new();
+        let client = Client::new();
+
+        assert_eq!(
+            css::embed_css(
+                cache,
+                &client,
+                "https://doesntmatter.local/",
+                "\t     \t   ",
+                false,
+                false,
+                false,
+            ),
+            ""
+        );
+    }
+
    #[test]
    fn style_exclude_unquoted_images() {
        let cache = &mut HashMap::new();