Added test for RST image parser

+ Fixed some small issues

src/rst_parser/mod.rs

@@ -27,7 +27,7 @@ impl RSTImage {
         let mut style = "".to_string();
 
         if let Some(alt) = &self.alt {
-            html = format!("{} {}", html, alt);
+            html = format!("{} alt=\"{}\"", html, alt);
         }
 
         if let Some(height) = &self.height {

src/tests/mod.rs

@@ -1,5 +1,5 @@
 #[cfg(test)]
-use super::rst_parser::parse_links;
+use super::rst_parser::{parse_links, parse_images};
 
 #[test]
 fn test_link_parser() {
@@ -9,7 +9,22 @@ fn test_link_parser() {
     .. _a link: https://domain.invalida\n",
     );
 
-    let output = parse_links(&mut input);
+    let output = parse_links(&mut input).unwrap();
 
     assert_eq!(output.trim_end(), "This is a paragraph that contains <a class=\"link\" href=\"https://domain.invalida\">a link</a>.")
 }
+
+#[test]
+fn test_image_parser() {
+    let input =
+        ".. image:: cool/image/123.png
+            :width: 60%
+            :height: auto
+            :alt: this is the alt text
+        ";
+
+    let output = parse_images(input).unwrap();
+
+    assert_eq!(output.trim_end(), "<img src=\"cool/image/123.png\" alt=\"this is the alt text\" style=\"height;60%;width:60%;\">")
+
+}