feat(expr): use same context for value & filter evaluation (#778)

1 files changed, 30 insertions, 4 deletions

diff --git a/tests/mason-core/installer/registry/expr_spec.lua b/tests/mason-core/installer/registry/expr_spec.lua
index 7e662b79..ec92f7a7 100644
--- a/tests/mason-core/installer/registry/expr_spec.lua
+++ b/tests/mason-core/installer/registry/expr_spec.lua
@@ -4,7 +4,7 @@ local Result = require "mason-core.result"
 
 describe("registry expressions", function()
     it("should eval simple expressions", function()
-        assert.same(Result.success "Hello, world!", expr.eval "Hello, world!")
+        assert.same(Result.success "Hello, world!", expr.eval("Hello, world!", {}))
 
         assert.same(
             Result.success "Hello, John Doe!",
@@ -15,6 +15,34 @@ describe("registry expressions", function()
         )
     end)
 
+    it("should eval nested access", function()
+        assert.same(
+            Result.success "Hello, world!",
+            expr.eval("Hello, {{greeting.name}}!", { greeting = { name = "world" } })
+        )
+    end)
+
+    it("should eval benign expressions", function()
+        assert.same(
+            Result.success "Hello, JOHNDOE JR.!",
+            expr.eval("Hello, {{greeting.firstname .. greeting.lastname .. tostring(tbl) | to_upper}}!", {
+                greeting = { firstname = "John", lastname = "Doe" },
+                tbl = setmetatable({}, {
+                    __tostring = function()
+                        return " Jr."
+                    end,
+                }),
+            })
+        )
+
+        assert.same(
+            Result.success "Gloves",
+            expr.eval("G{{ 'Cloves' | trim_start(trim) }}", {
+                trim = "C",
+            })
+        )
+    end)
+
     it("should eval expressions with filters", function()
         assert.same(
             Result.success "Hello, MR. John!",
@@ -35,9 +63,7 @@ describe("registry expressions", function()
 
     it("should reject invalid values", function()
         assert.is_true(
-            match.matches [[^.*Unable to interpolate value: "non_existent"%.$]](
-                expr.eval("Hello, {{non_existent}}", {}):err_or_nil()
-            )
+            match.matches [[^.*Value is nil: "non_existent"%.$]](expr.eval("Hello, {{non_existent}}", {}):err_or_nil())
         )
     end)