forked from M-Labs/nalgebra
63 lines
2.4 KiB
Rust
63 lines
2.4 KiB
Rust
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#![cfg(feature = "serde-serialize")]
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//! Serialization tests
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#[cfg(any(not(feature = "proptest-support"), not(feature = "compare")))]
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compile_error!("Tests must be run with features `proptest-support` and `compare`");
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#[macro_use]
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pub mod common;
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use nalgebra_sparse::csr::CsrMatrix;
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use proptest::prelude::*;
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use serde::{Deserialize, Serialize};
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use crate::common::csr_strategy;
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fn json_roundtrip<T: Serialize + for<'a> Deserialize<'a>>(csr: &CsrMatrix<T>) -> CsrMatrix<T> {
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let serialized = serde_json::to_string(csr).unwrap();
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let deserialized: CsrMatrix<T> = serde_json::from_str(&serialized).unwrap();
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deserialized
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}
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#[test]
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fn csr_roundtrip() {
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{
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// A CSR matrix with zero explicitly stored entries
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let offsets = vec![0, 0, 0, 0];
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let indices = vec![];
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let values = Vec::<i32>::new();
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let matrix = CsrMatrix::try_from_csr_data(3, 2, offsets, indices, values).unwrap();
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assert_eq!(json_roundtrip(&matrix), matrix);
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}
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{
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// An arbitrary CSR matrix
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let offsets = vec![0, 2, 2, 5];
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let indices = vec![0, 5, 1, 2, 3];
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let values = vec![0, 1, 2, 3, 4];
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let matrix =
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CsrMatrix::try_from_csr_data(3, 6, offsets.clone(), indices.clone(), values.clone())
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.unwrap();
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assert_eq!(json_roundtrip(&matrix), matrix);
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}
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}
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#[test]
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fn invalid_csr_deserialize() {
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// Valid matrix: {"nrows":3,"ncols":6,"row_offsets":[0,2,2,5],"col_indices":[0,5,1,2,3],"values":[0,1,2,3,4]}
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assert!(serde_json::from_str::<CsrMatrix<i32>>(r#"{"nrows":3,"ncols":6,"row_offsets":[0,2,2,5],"col_indices":[0,5,1,2,3],"values":[0,1,2,3]}"#).is_err());
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assert!(serde_json::from_str::<CsrMatrix<i32>>(r#"{"nrows":3,"ncols":6,"row_offsets":[0,2,2,5],"col_indices":[0,5,1,8,3],"values":[0,1,2,3,4]}"#).is_err());
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assert!(serde_json::from_str::<CsrMatrix<i32>>(r#"{"nrows":3,"ncols":6,"row_offsets":[0,2,2,5],"col_indices":[0,5,1,2,3,1,1],"values":[0,1,2,3,4]}"#).is_err());
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// The following actually panics ('range end index 10 out of range for slice of length 5', nalgebra-sparse\src\pattern.rs:156:38)
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//assert!(serde_json::from_str::<CsrMatrix<i32>>(r#"{"nrows":3,"ncols":6,"row_offsets":[0,10,2,5],"col_indices":[0,5,1,2,3],"values":[0,1,2,3,4]}"#).is_err());
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}
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proptest! {
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#[test]
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fn csr_roundtrip_proptest(csr in csr_strategy()) {
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prop_assert_eq!(json_roundtrip(&csr), csr);
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}
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}
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