Improve tests for AsVariant derive macro

Author: regexident

tests/derive-tests/as_variant/fail/non_clone.err.txt

@@ -0,0 +1,5 @@
+error: Only enums can use this derive
+ --> /tests/derive-tests/as_variant/fail/struct.rs:4:12
+  |
+4 | pub struct Struct {
+  |            ^^^^^^

tests/derive-tests/as_variant/fail/non_clone.out.rs

@@ -0,0 +1,5 @@
+use enumcapsulate::AsVariant;
+pub struct Struct {
+    field: (),
+}
+fn main() {}

tests/derive-tests/as_variant/fail/non_clone.rs

@@ -0,0 +1,8 @@
+use enumcapsulate::AsVariant;
+
+#[derive(AsVariant)]
+pub struct Struct {
+    field: (),
+}
+
+fn main() {}

tests/derive-tests/as_variant/fail/struct.err.txt

@@ -0,0 +1,5 @@
+error: Only enums can use this derive
+ --> /tests/derive-tests/as_variant/fail/union.rs:4:11
+  |
+4 | pub union Union {
+  |           ^^^^^

tests/derive-tests/as_variant/fail/struct.out.rs

@@ -0,0 +1,5 @@
+use enumcapsulate::AsVariant;
+pub union Union {
+    field: (),
+}
+fn main() {}

tests/derive-tests/as_variant/fail/struct.rs

@@ -0,0 +1,8 @@
+use enumcapsulate::AsVariant;
+
+#[derive(AsVariant)]
+pub union Union {
+    field: (),
+}
+
+fn main() {}

tests/derive-tests/as_variant/fail/union.err.txt

@@ -15,10 +15,13 @@ impl ::core::clone::Clone for VariantB {
         VariantB
     }
 }
+pub struct VariantC;
 pub enum Enum {
     Unit,
     OneTupleField(VariantA),
     OneStructField { variant: VariantB },
+    #[enumcapsulate(exclude)]
+    OneExcludedTupleField(VariantA),
 }
 impl ::enumcapsulate::AsVariant<VariantA> for Enum
 where