Derive JsonSchema_repr (#76)

schemars/tests/ui/repr_missing.rs

@@ -0,0 +1,8 @@
+use schemars::JsonSchema_repr;
+
+#[derive(JsonSchema_repr)]
+pub enum Enum {
+    Unit,
+}
+
+fn main() {}

schemars/tests/ui/repr_missing.stderr

@@ -0,0 +1,7 @@
+error: JsonSchema_repr: missing #[repr(...)] attribute
+ --> $DIR/repr_missing.rs:3:10
+  |
+3 | #[derive(JsonSchema_repr)]
+  |          ^^^^^^^^^^^^^^^
+  |
+  = note: this error originates in a derive macro (in Nightly builds, run with -Z macro-backtrace for more info)

schemars/tests/ui/repr_non_unit_variant.rs

@@ -0,0 +1,10 @@
+use schemars::JsonSchema_repr;
+
+#[derive(JsonSchema_repr)]
+#[repr(u8)]
+pub enum Enum {
+    Unit,
+    EmptyTuple(),
+}
+
+fn main() {}

schemars/tests/ui/repr_non_unit_variant.stderr

@@ -0,0 +1,5 @@
+error: JsonSchema_repr: must be a unit variant
+ --> $DIR/repr_non_unit_variant.rs:7:5
+  |
+7 |     EmptyTuple(),
+  |     ^^^^^^^^^^