Implement {{loop.cycle(…)}} similar to Jinja

2 files changed, 20 insertions, 0 deletions

diff --git a/testing/tests/ui/loop_cycle_wrong_argument_count.rs b/testing/tests/ui/loop_cycle_wrong_argument_count.rs
new file mode 100644
index 0000000..e87f4f4
--- /dev/null
+++ b/testing/tests/ui/loop_cycle_wrong_argument_count.rs
@@ -0,0 +1,13 @@
+use askama::Template;
+
+#[derive(Template)]
+#[template(
+    source = r#"{% for v in values %}{{ loop.cycle("r", "g", "b") }}{{ v }},{% endfor %}"#,
+    ext = "txt"
+)]
+struct ForCycle<'a> {
+    values: &'a [u8],
+}
+
+fn main() {
+}
diff --git a/testing/tests/ui/loop_cycle_wrong_argument_count.stderr b/testing/tests/ui/loop_cycle_wrong_argument_count.stderr
new file mode 100644
index 0000000..acf3bb1
--- /dev/null
+++ b/testing/tests/ui/loop_cycle_wrong_argument_count.stderr
@@ -0,0 +1,7 @@
+error: loop.cycle(…) expects exactly one argument
+ --> $DIR/loop_cycle_wrong_argument_count.rs:3:10
+  |
+3 | #[derive(Template)]
+  |          ^^^^^^^^
+  |
+  = note: this error originates in the derive macro `Template` (in Nightly builds, run with -Z macro-backtrace for more info)