feat(npm): speed up checking for new versions (#530)

1 files changed, 21 insertions, 0 deletions

diff --git a/tests/mason-core/result_spec.lua b/tests/mason-core/result_spec.lua
index 737d8c56..ee722281 100644
--- a/tests/mason-core/result_spec.lua
+++ b/tests/mason-core/result_spec.lua
@@ -153,4 +153,25 @@ describe("result", function()
         assert.is_true(getmetatable(opt) == Optional)
         assert.is_false(opt:is_present())
     end)
+
+    it("should chain results", function()
+        local success = Result.success("First"):and_then(function(value)
+            return Result.success(value .. " Second")
+        end)
+        local failure = Result.success("Error"):and_then(Result.failure)
+
+        assert.is_true(success:is_success())
+        assert.equals("First Second", success:get_or_nil())
+        assert.is_true(failure:is_failure())
+        assert.equals("Error", failure:err_or_nil())
+    end)
+
+    it("should not chain results upon failure", function()
+        local chain = spy.new()
+        local failure = Result.failure("Error"):and_then(chain)
+
+        assert.is_true(failure:is_failure())
+        assert.equals("Error", failure:err_or_nil())
+        assert.spy(chain).was_not_called()
+    end)
 end)