codegen: Add tests for new filters

Signed-off-by: Daniel Silverstone <dsilvers@digital-scurf.org>

1 files changed, 37 insertions, 0 deletions

diff --git a/src/codegen.rs b/src/codegen.rs
index f18fcc0..19a84e7 100644
--- a/src/codegen.rs
+++ b/src/codegen.rs
@@ -143,3 +143,40 @@ impl Func {
         }
     }
 }
+
+#[cfg(test)]
+mod test {
+    use std::collections::HashMap;
+    use tera::Value;
+    #[test]
+    fn verify_commentsafe_filter() {
+        static GOOD_CASES: &[(&str, &str)] = &[
+            ("", ""),                                         // Empty
+            ("hello world", "hello world"),                   // basic strings pass through
+            ("Capitalised Words", "Capitalised Words"),       // capitals are OK
+            ("multiple\nlines\rblah", "multiple lines blah"), // line breaks are made into spaces
+        ];
+        for (input, output) in GOOD_CASES.iter().copied() {
+            let input = Value::from(input);
+            let output = Value::from(output);
+            let empty = HashMap::new();
+            assert_eq!(super::commentsafe(&input, &empty).ok(), Some(output));
+        }
+    }
+
+    #[test]
+    fn verify_name_slugification() {
+        static GOOD_CASES: &[(&str, &str)] = &[
+            ("foobar", "foobar"),        // Simple words pass through
+            ("FooBar", "foobar"),        // Capital letters are lowercased
+            ("Motörhead", "mot_rhead"), // Non-ascii characters are changed for underscores
+            ("foo bar", "foo_bar"),      // As is whitespace etc.
+        ];
+        for (input, output) in GOOD_CASES.iter().copied() {
+            let input = Value::from(input);
+            let output = Value::from(output);
+            let empty = HashMap::new();
+            assert_eq!(super::nameslug(&input, &empty).ok(), Some(output));
+        }
+    }
+}