diff options
Diffstat (limited to 'vendor/serde_json/tests/regression/issue795.rs')
-rw-r--r-- | vendor/serde_json/tests/regression/issue795.rs | 59 |
1 files changed, 59 insertions, 0 deletions
diff --git a/vendor/serde_json/tests/regression/issue795.rs b/vendor/serde_json/tests/regression/issue795.rs new file mode 100644 index 0000000..bb82852 --- /dev/null +++ b/vendor/serde_json/tests/regression/issue795.rs @@ -0,0 +1,59 @@ +#![allow(clippy::assertions_on_result_states)] + +use serde::de::{ + Deserialize, Deserializer, EnumAccess, IgnoredAny, MapAccess, VariantAccess, Visitor, +}; +use serde_json::json; +use std::fmt; + +#[derive(Debug)] +pub enum Enum { + Variant { x: u8 }, +} + +impl<'de> Deserialize<'de> for Enum { + fn deserialize<D>(deserializer: D) -> Result<Self, D::Error> + where + D: Deserializer<'de>, + { + struct EnumVisitor; + + impl<'de> Visitor<'de> for EnumVisitor { + type Value = Enum; + + fn expecting(&self, formatter: &mut fmt::Formatter) -> fmt::Result { + formatter.write_str("enum Enum") + } + + fn visit_enum<A>(self, data: A) -> Result<Self::Value, A::Error> + where + A: EnumAccess<'de>, + { + let (IgnoredAny, variant) = data.variant()?; + variant.struct_variant(&["x"], self) + } + + fn visit_map<A>(self, mut data: A) -> Result<Self::Value, A::Error> + where + A: MapAccess<'de>, + { + let mut x = 0; + if let Some((IgnoredAny, value)) = data.next_entry()? { + x = value; + } + Ok(Enum::Variant { x }) + } + } + + deserializer.deserialize_enum("Enum", &["Variant"], EnumVisitor) + } +} + +#[test] +fn test() { + let s = r#" {"Variant":{"x":0,"y":0}} "#; + assert!(serde_json::from_str::<Enum>(s).is_err()); + + let j = json!({"Variant":{"x":0,"y":0}}); + assert!(serde_json::from_value::<Enum>(j).is_err()); +} |