feat(expr): add tbl_interpolate() (#805)

1 files changed, 39 insertions, 3 deletions

diff --git a/tests/mason-core/installer/registry/expr_spec.lua b/tests/mason-core/installer/registry/expr_spec.lua
index be9de0d7..abd1874e 100644
--- a/tests/mason-core/installer/registry/expr_spec.lua
+++ b/tests/mason-core/installer/registry/expr_spec.lua
@@ -63,21 +63,57 @@ describe("registry expressions", function()
 
     it("should reject invalid values", function()
         assert.is_true(
-            match.matches [[^.*Value is nil: "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)
 
     it("should reject invalid filters", function()
         assert.is_true(
-            match.matches [[^.*Invalid filter expression: "whut"%.$]](
+            match.matches [[^.*Invalid filter expression: "whut"]](
                 expr.eval("Hello, {{ value | whut }}", { value = "value" }):err_or_nil()
             )
         )
 
         assert.is_true(
-            match.matches [[^.*Failed to parse filter: "wh%-!uut"%.$]](
+            match.matches [[^.*Failed to parse filter: "wh%-!uut"]](
                 expr.eval("Hello, {{ value | wh-!uut }}", { value = "value" }):err_or_nil()
             )
         )
     end)
 end)
+
+describe("table interpolation", function()
+    it("should interpolate nested values", function()
+        assert.same(
+            Result.success {
+                some = {
+                    nested = {
+                        value = "here",
+                    },
+                },
+            },
+            expr.tbl_interpolate({
+                some = {
+                    nested = {
+                        value = "{{value}}",
+                    },
+                },
+            }, { value = "here" })
+        )
+    end)
+
+    it("should only only interpolate string values", function()
+        assert.same(
+            Result.success {
+                a = 1,
+                b = { c = 2 },
+                d = "Hello!",
+            },
+            expr.tbl_interpolate({
+                a = 1,
+                b = { c = 2 },
+                d = "Hello!",
+            }, {})
+        )
+    end)
+end)