1 files changed, 169 insertions, 0 deletions
diff --git a/vendor/handlebars/tests/subexpression.rs b/vendor/handlebars/tests/subexpression.rs
new file mode 100644
index 000000000..a0ef4090f
--- /dev/null
+++ b/vendor/handlebars/tests/subexpression.rs
@@ -0,0 +1,169 @@
+extern crate handlebars;
+#[macro_use]
+extern crate serde_json;
+
+use std::sync::atomic::{AtomicU16, Ordering};
+use std::sync::Arc;
+
+use handlebars::{Context, Handlebars, Helper, HelperDef, RenderContext, RenderError, ScopedJson};
+
+#[test]
+fn test_subexpression() {
+    let hbs = Handlebars::new();
+
+    let data = json!({"a": 1, "b": 0, "c": 2});
+
+    assert_eq!(
+        hbs.render_template("{{#if (gt a b)}}Success{{else}}Failed{{/if}}", &data)
+            .unwrap(),
+        "Success"
+    );
+
+    assert_eq!(
+        hbs.render_template("{{#if (gt a c)}}Success{{else}}Failed{{/if}}", &data)
+            .unwrap(),
+        "Failed"
+    );
+
+    assert_eq!(
+        hbs.render_template("{{#if (not (gt a c))}}Success{{else}}Failed{{/if}}", &data)
+            .unwrap(),
+        "Success"
+    );
+
+    assert_eq!(
+        hbs.render_template("{{#if (not (gt a b))}}Success{{else}}Failed{{/if}}", &data)
+            .unwrap(),
+        "Failed"
+    );
+
+    // no argument provided for not
+    assert!(hbs
+        .render_template("{{#if (not)}}Success{{else}}Failed{{/if}}", &data)
+        .is_err());
+
+    // json literal
+    assert_eq!(
+        hbs.render_template("{{#if (not true)}}Success{{else}}Failed{{/if}}", &data)
+            .unwrap(),
+        "Failed"
+    );
+    assert_eq!(
+        hbs.render_template("{{#if (not false)}}Success{{else}}Failed{{/if}}", &data)
+            .unwrap(),
+        "Success"
+    );
+}
+
+#[test]
+fn test_strict_mode() {
+    let mut hbs = Handlebars::new();
+    hbs.set_strict_mode(true);
+
+    let data = json!({"a": 1});
+
+    assert!(hbs
+        .render_template("{{#if (eq a 1)}}Success{{else}}Failed{{/if}}", &data)
+        .is_ok());
+    assert!(hbs
+        .render_template("{{#if (eq z 1)}}Success{{else}}Failed{{/if}}", &data)
+        .is_err())
+}
+
+#[test]
+fn invalid_json_path() {
+    // The data here is not important
+    let data = &Vec::<()>::new();
+
+    let hbs = Handlebars::new();
+
+    let error = hbs.render_template("{{x[]@this}}", &data).unwrap_err();
+
+    let expected = "Error rendering \"Unnamed template\" line 1, col 1: Helper not defined: \"x\"";
+
+    assert_eq!(format!("{}", error), expected);
+}
+
+struct MyHelper;
+
+impl HelperDef for MyHelper {
+    fn call_inner<'reg: 'rc, 'rc>(
+        &self,
+        _: &Helper<'reg, 'rc>,
+        _: &'reg Handlebars,
+        _: &'rc Context,
+        _: &mut RenderContext<'reg, 'rc>,
+    ) -> Result<ScopedJson<'reg, 'rc>, RenderError> {
+        Ok(ScopedJson::Derived(json!({
+            "a": 1,
+            "b": 2,
+        })))
+    }
+}
+
+#[test]
+fn test_lookup_with_subexpression() {
+    let mut registry = Handlebars::new();
+    registry.register_helper("myhelper", Box::new(MyHelper {}));
+    registry
+        .register_template_string("t", "{{ lookup (myhelper) \"a\" }}")
+        .unwrap();
+
+    let result = registry.render("t", &json!({})).unwrap();
+
+    assert_eq!("1", result);
+}
+
+struct CallCounterHelper {
+    pub(crate) c: Arc<AtomicU16>,
+}
+
+impl HelperDef for CallCounterHelper {
+    fn call_inner<'reg: 'rc, 'rc>(
+        &self,
+        h: &Helper<'reg, 'rc>,
+        _: &'reg Handlebars,
+        _: &'rc Context,
+        _: &mut RenderContext<'reg, 'rc>,
+    ) -> Result<ScopedJson<'reg, 'rc>, RenderError> {
+        // inc counter
+        self.c.fetch_add(1, Ordering::SeqCst);
+
+        if let Some(_) = h.param(0) {
+            Ok(json!({
+                "a": 1,
+            })
+            .into())
+        } else {
+            Ok(json!(null).into())
+        }
+    }
+}
+
+#[test]
+fn test_helper_call_count() {
+    let mut registry = Handlebars::new();
+
+    let counter = Arc::new(AtomicU16::new(0));
+    let helper = Box::new(CallCounterHelper { c: counter.clone() });
+
+    registry.register_helper("myhelper", helper);
+
+    registry
+        .render_template(
+            "{{#if (myhelper a)}}something{{else}}nothing{{/if}}",
+            &json!(null),
+        ) // If returns true
+        .unwrap();
+
+    assert_eq!(1, counter.load(Ordering::SeqCst));
+
+    registry
+        .render_template(
+            "{{#if (myhelper)}}something{{else}}nothing{{/if}}",
+            &json!(null),
+        ) // If returns false
+        .unwrap();
+
+    assert_eq!(2, counter.load(Ordering::SeqCst));
+}