Add more tests

src/commands/classified.rs

@@ -167,7 +167,7 @@ impl ExternalCommand {
                 let mut first = true;
                 for i in &inputs {
                     if !first {
-                        new_arg_string.push_str(" && ");
+                        new_arg_string.push_str("&&");
                         new_arg_string.push_str(&self.name);
                     } else {
                         first = false;

src/tests.rs

@@ -58,4 +58,29 @@ mod tests {
     fn test_toml() {
         test_helper("open_toml");
     }
+
+    #[test]
+    fn test_json() {
+        test_helper("open_json");
+    }
+
+    #[test]
+    fn json_roundtrip() {
+        test_helper("json_roundtrip");
+    }
+
+    #[test]
+    fn toml_roundtrip() {
+        test_helper("toml_roundtrip");
+    }
+
+    #[test]
+    fn sort_by() {
+        test_helper("sort_by");
+    }
+
+    #[test]
+    fn split() {
+        test_helper("split");
+    }
 }