diff options
Diffstat (limited to 'test')
-rw-r--r-- | test/gleam/javascript/promise_test.gleam | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/test/gleam/javascript/promise_test.gleam b/test/gleam/javascript/promise_test.gleam index 9d37984..ea7c3d3 100644 --- a/test/gleam/javascript/promise_test.gleam +++ b/test/gleam/javascript/promise_test.gleam @@ -53,3 +53,21 @@ pub fn map_try_error_test() -> Promise(Result(Int, Int)) { |> promise.map_try(fn(a) { Ok(a + 1) }) |> promise.tap(fn(a) { assert Error(1) = a }) } + +pub fn then_try_ok_ok_test() -> Promise(Result(Int, Int)) { + promise.resolve(Ok(1)) + |> promise.then_try(fn(a) { promise.resolve(Ok(a + 1)) }) + |> promise.tap(fn(a) { assert Ok(2) = a }) +} + +pub fn then_try_ok_error_test() -> Promise(Result(Int, Int)) { + promise.resolve(Ok(1)) + |> promise.then_try(fn(a) { promise.resolve(Error(a + 1)) }) + |> promise.tap(fn(a) { assert Error(2) = a }) +} + +pub fn then_try_error_test() -> Promise(Result(Int, Int)) { + promise.resolve(Error(1)) + |> promise.then_try(fn(a) { promise.resolve(Ok(a + 1)) }) + |> promise.tap(fn(a) { assert Error(1) = a }) +} |