Add more detail to TypeMismatch error

1 files changed, 7 insertions, 0 deletions

diff --git a/dhall/tests/type-errors/unit/NaturalSubtractNotNatural.txt b/dhall/tests/type-errors/unit/NaturalSubtractNotNatural.txt
index fd906bf..02a9c45 100644
--- a/dhall/tests/type-errors/unit/NaturalSubtractNotNatural.txt
+++ b/dhall/tests/type-errors/unit/NaturalSubtractNotNatural.txt
@@ -4,3 +4,10 @@
   | ^--------------^
   |
   = Type error: Wrong type of function argument
+ --> 1:18
+  |
+1 | Natural/subtract True True␊
+  |                  ^--^
+  |
+  = This argument has type Value@WHNF { value: AppliedBuiltin(Bool, []), type: Type }
+[unknown location] But the function expected an argument of type Value@WHNF { value: AppliedBuiltin(Natural, []), type: Type }