Few minor changes, clippy fixes, and test fixes

examples/acceptance_tests/105/lib/other_tests.ak

@@ -0,0 +1,36 @@
+type Foo {
+  msg: Int,
+}
+
+type Bar {
+  Buzz
+  Bazz
+}
+
+test thing() {
+  let data: Data = Buzz
+  if data is Foo {
+    False
+  } else {
+    True
+  }
+}
+
+type A<x> {
+  NoA
+  SomeA(Void, x)
+}
+
+type B {
+  something: Void,
+}
+
+test err_example() {
+  let r: Data = SomeA(Void, B(Void))
+  expect x: A<B> = r
+
+  when x is {
+    NoA -> False
+    SomeA(_, B(something)) -> something == Void
+  }
+}