Add first ability gen tests

compiler/test_gen/src/gen_abilities.rs

@@ -0,0 +1,61 @@
+#[cfg(feature = "gen-llvm")]
+use crate::helpers::llvm::assert_evals_to;
+
+#[cfg(feature = "gen-dev")]
+use crate::helpers::dev::assert_evals_to;
+
+#[cfg(feature = "gen-wasm")]
+use crate::helpers::wasm::assert_evals_to;
+
+#[cfg(test)]
+use indoc::indoc;
+
+#[test]
+#[cfg(any(feature = "gen-llvm", feature = "gen-wasm"))]
+fn hash_specialization() {
+    assert_evals_to!(
+        indoc!(
+            r#"
+            app "test" provides [ main ] to "./platform"
+
+            Hash has
+                hash : a -> U64 | a has Hash
+
+            Id := U64
+
+            hash = \$Id n -> n
+
+            main = hash ($Id 1234)
+            "#
+        ),
+        1234,
+        u64
+    );
+}
+
+#[test]
+#[cfg(any(feature = "gen-llvm", feature = "gen-wasm"))]
+fn hash_specialization_multiple_add() {
+    assert_evals_to!(
+        indoc!(
+            r#"
+            app "test" provides [ main ] to "./platform"
+
+            Hash has
+                hash : a -> U64 | a has Hash
+
+            Id := U64
+
+            hash = \$Id n -> n
+
+            One := {}
+
+            hash = \$One _ -> 1
+
+            main = hash ($Id 1234) + hash ($One {})
+            "#
+        ),
+        1235,
+        u64
+    );
+}