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fix: add indexmap support (#346)
* Add indexmap support * ci: downgrade serde_bytes for msrv job * Update test.sh * ci: msrv downgrade condition * test: add snapshots --------- Co-authored-by: dj8yf0μl <noreply@nowhere.org>
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-6
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‎.github/test.sh‎

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@@ -23,6 +23,10 @@ cargo test --features ascii,unstable__schema 'schema::test_ascii_strings'
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########## features = ["rc"] group
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cargo test --features rc 'roundtrip::test_rc'
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cargo test --features rc,unstable__schema 'schema::test_rc'
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########## features = ["indexmap"] group
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cargo test --features indexmap 'roundtrip::test_indexmap'
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# checking with `derive` too just for the sake of redundancy https://github.com/near/borsh-rs/pull/346
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cargo test --features indexmap,derive 'roundtrip::test_indexmap'
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########## features = ["de_strict_order"] group
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cargo test --features de_strict_order 'roundtrip::test_hash_map'
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cargo test --features de_strict_order 'roundtrip::test_btree_map'
@@ -44,6 +48,10 @@ cargo test --no-default-features --features ascii,unstable__schema 'schema::test
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########## features = ["rc"] group
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cargo test --no-default-features --features rc 'roundtrip::test_rc'
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cargo test --no-default-features --features rc,unstable__schema 'schema::test_rc'
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########## features = ["indexmap"] group
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cargo test --no-default-features --features indexmap 'roundtrip::test_indexmap'
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# checking with `derive` too just for the sake of redundancy https://github.com/near/borsh-rs/pull/346
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cargo test --no-default-features --features indexmap,derive 'roundtrip::test_indexmap'
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########## features = ["hashbrown"] group
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cargo test --no-default-features --features hashbrown
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cargo test --no-default-features --features hashbrown,derive

‎.github/workflows/rust.yml‎

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@@ -36,10 +36,10 @@ jobs:
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run: rustup default ${{ matrix.rust_version }}
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- name: print rustc version
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run: rustc --version
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# - name: downgrade `toml_edit`, time`, `toml_datetime` crate to support older Rust toolchain
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# if: matrix.rust_version == '1.67.0'
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# run: |
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# cargo update -p toml_edit --precise 0.21.0
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- name: downgrade `serde_bytes` crate to support older Rust toolchain
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if: matrix.rust_version == '1.67'
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run: |
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cargo update -p serde_bytes --precise 0.11.16
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- name: Run tests
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run: ./.github/test.sh
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@@ -52,8 +52,8 @@ jobs:
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uses: dtolnay/rust-toolchain@nightly
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# a failure on this check means, that some of `syn` crate's enums have been extended
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# with new variants.
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# consult https://github.com/serde-rs/serde/blob/master/serde_derive/src/bound.rs#L100 ,
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# the implementation of `FindTyParams` may have been updated already
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# consult https://github.com/serde-rs/serde/blob/master/serde_derive/src/bound.rs#L100 ,
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# the implementation of `FindTyParams` may have been updated already
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- name: Run exhaustive check tests
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run: RUSTFLAGS="-A unused_imports -D warnings" cargo check --workspace --features force_exhaustive_checks
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‎borsh/Cargo.toml‎

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@@ -39,6 +39,7 @@ borsh-derive = { path = "../borsh-derive", version = "~1.5.5", optional = true }
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# sudden breaking changes with an open range of versions, so we limit the range by not yet released 0.16.0 version:
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hashbrown = { version = ">=0.11,<0.16.0", optional = true }
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bytes = { version = "1", optional = true }
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indexmap = { version = "2", optional = true }
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bson = { version = "2", optional = true }
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[dev-dependencies]

‎borsh/src/de/mod.rs‎

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@@ -453,6 +453,39 @@ impl BorshDeserialize for bson::oid::ObjectId {
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}
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}
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#[cfg(feature = "indexmap")]
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// Taken from https://github.com/indexmap-rs/indexmap/blob/dd06e5773e4f91748396c67d00c83637f5c0dd49/src/borsh.rs#L39
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// license: MIT OR Apache-2.0
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impl<K, V, S> BorshDeserialize for indexmap::IndexMap<K, V, S>
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where
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K: BorshDeserialize + Eq + core::hash::Hash,
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V: BorshDeserialize,
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S: core::hash::BuildHasher + Default,
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{
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#[inline]
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fn deserialize_reader<R: Read>(reader: &mut R) -> Result<Self> {
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check_zst::<K>()?;
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let vec = <Vec<(K, V)>>::deserialize_reader(reader)?;
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Ok(vec.into_iter().collect::<indexmap::IndexMap<K, V, S>>())
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}
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}
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#[cfg(feature = "indexmap")]
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// Taken from https://github.com/indexmap-rs/indexmap/blob/dd06e5773e4f91748396c67d00c83637f5c0dd49/src/borsh.rs#L75
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// license: MIT OR Apache-2.0
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impl<T, S> BorshDeserialize for indexmap::IndexSet<T, S>
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where
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T: BorshDeserialize + Eq + core::hash::Hash,
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S: core::hash::BuildHasher + Default,
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{
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#[inline]
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fn deserialize_reader<R: Read>(reader: &mut R) -> Result<Self> {
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check_zst::<T>()?;
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let vec = <Vec<T>>::deserialize_reader(reader)?;
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Ok(vec.into_iter().collect::<indexmap::IndexSet<T, S>>())
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}
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}
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impl<T> BorshDeserialize for Cow<'_, T>
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where
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T: ToOwned + ?Sized,

‎borsh/src/ser/mod.rs‎

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@@ -317,6 +317,58 @@ impl BorshSerialize for bson::oid::ObjectId {
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}
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}
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#[cfg(feature = "indexmap")]
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// Taken from https://github.com/indexmap-rs/indexmap/blob/dd06e5773e4f91748396c67d00c83637f5c0dd49/src/borsh.rs#L74C1-L86C2
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// license: MIT OR Apache-2.0
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impl<T, S> BorshSerialize for indexmap::IndexSet<T, S>
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where
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T: BorshSerialize,
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{
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#[inline]
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fn serialize<W: Write>(&self, writer: &mut W) -> Result<()> {
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check_zst::<T>()?;
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let iterator = self.iter();
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u32::try_from(iterator.len())
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.map_err(|_| ErrorKind::InvalidData)?
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.serialize(writer)?;
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for item in iterator {
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item.serialize(writer)?;
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}
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Ok(())
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}
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}
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#[cfg(feature = "indexmap")]
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// Taken from https://github.com/indexmap-rs/indexmap/blob/dd06e5773e4f91748396c67d00c83637f5c0dd49/src/borsh.rs#L15
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// license: MIT OR Apache-2.0
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impl<K, V, S> BorshSerialize for indexmap::IndexMap<K, V, S>
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where
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K: BorshSerialize,
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V: BorshSerialize,
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{
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#[inline]
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fn serialize<W: Write>(&self, writer: &mut W) -> Result<()> {
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check_zst::<K>()?;
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let iterator = self.iter();
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u32::try_from(iterator.len())
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.map_err(|_| ErrorKind::InvalidData)?
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.serialize(writer)?;
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for (key, value) in iterator {
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key.serialize(writer)?;
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value.serialize(writer)?;
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}
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Ok(())
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}
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}
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impl<T> BorshSerialize for VecDeque<T>
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where
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T: BorshSerialize,

‎borsh/tests/roundtrip/snapshots/tests__roundtrip__test_indexmap__indexmap_roundtrip.snap‎

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---
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source: borsh/tests/roundtrip/test_indexmap.rs
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expression: serialized_map
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---
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[
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3,
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0,
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0,
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0,
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1,
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0,
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0,
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0,
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2,
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0,
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0,
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0,
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3,
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0,
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0,
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0,
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4,
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0,
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0,
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0,
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5,
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0,
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0,
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0,
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0,
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0,
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]

‎borsh/tests/roundtrip/snapshots/tests__roundtrip__test_indexmap__indexset_roundtrip.snap‎

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---
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source: borsh/tests/roundtrip/test_indexmap.rs
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expression: serialized_set
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---
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[
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6,
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0,
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0,
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0,
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1,
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0,
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0,
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0,
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2,
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0,
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0,
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0,
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3,
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0,
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0,
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0,
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4,
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0,
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0,
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0,
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5,
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0,
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0,
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0,
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0,
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0,
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]

‎borsh/tests/roundtrip/test_indexmap.rs‎

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use borsh::BorshDeserialize;
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use indexmap::{IndexMap, IndexSet};
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#[test]
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// Taken from https://github.com/indexmap-rs/indexmap/blob/dd06e5773e4f91748396c67d00c83637f5c0dd49/src/borsh.rs#L100
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// license: MIT OR Apache-2.0
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fn test_indexmap_roundtrip() {
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let original_map: IndexMap<i32, i32> = {
9+
let mut map = IndexMap::new();
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map.insert(1, 2);
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map.insert(3, 4);
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map.insert(5, 6);
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map
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};
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let serialized_map = borsh::to_vec(&original_map).unwrap();
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#[cfg(feature = "std")]
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insta::assert_debug_snapshot!(serialized_map);
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let deserialized_map: IndexMap<i32, i32> =
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BorshDeserialize::try_from_slice(&serialized_map).unwrap();
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assert_eq!(original_map, deserialized_map);
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}
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#[test]
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// Taken from https://github.com/indexmap-rs/indexmap/blob/dd06e5773e4f91748396c67d00c83637f5c0dd49/src/borsh.rs#L115
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// license: MIT OR Apache-2.0
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fn test_indexset_roundtrip() {
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let mut original_set = IndexSet::new();
29+
[1, 2, 3, 4, 5, 6].iter().for_each(|&i| {
30+
original_set.insert(i);
31+
});
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let serialized_set = borsh::to_vec(&original_set).unwrap();
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#[cfg(feature = "std")]
36+
insta::assert_debug_snapshot!(serialized_set);
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let deserialized_set: IndexSet<i32> =
39+
BorshDeserialize::try_from_slice(&serialized_set).unwrap();
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assert_eq!(original_set, deserialized_set);
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}

‎borsh/tests/tests.rs‎

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@@ -52,6 +52,8 @@ mod roundtrip {
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mod test_cells;
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#[cfg(feature = "rc")]
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mod test_rc;
55+
#[cfg(feature = "indexmap")]
56+
mod test_indexmap;
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#[cfg(feature = "derive")]
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mod requires_derive_category {

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