1 files changed, 30 insertions, 0 deletions
diff --git a/third_party/rust/fluent-testing/src/scenarios/missing_optional_one_locale.rs b/third_party/rust/fluent-testing/src/scenarios/missing_optional_one_locale.rs
new file mode 100644
index 0000000000..3afcec7529
--- /dev/null
+++ b/third_party/rust/fluent-testing/src/scenarios/missing_optional_one_locale.rs
@@ -0,0 +1,30 @@
+use fluent_fallback::types::{ResourceType, ToResourceId};
+
+use super::structs::*;
+use crate::queries;
+
+/// Tests bundle generation with an optional resource that is missing from only the primary locale.
+/// Since the resource is optional, we should only fallback to another locale for values in the missing
+/// optional resource. We should still be able to use the primary locale for other present values/resources.
+pub fn get_scenario() -> Scenario {
+    Scenario::new(
+        "missing_optional_one_locale",
+        vec![
+            FileSource::new("browser", "browser/{locale}/", vec!["en-US", "pl"]),
+            FileSource::new("missing", "missing-resource/{locale}/", vec!["en-US", "pl"]),
+        ],
+        vec!["en-US", "pl"],
+        vec![
+            "browser/sanitize.ftl".into(),
+            "missing/missing-one.ftl".to_resource_id(ResourceType::Optional),
+        ],
+        queries![
+            ("history-section-label", "History", ExceptionalContext::None),
+            (
+                "missing-one",
+                "zaginiony",
+                ExceptionalContext::OptionalResourceMissingFromLocale,
+            )
+        ],
+    )
+}