Add fuzz testing harness to smithy-json and fix bug found by it (#462)

target

corpus

artifacts

coverage

coverage.profdata

coverage.profraw

[package]

name = "smithy-json-fuzz"

version = "0.0.0"

authors = ["AWS Rust SDK Team <aws-sdk-rust@amazon.com>", "John DiSanti <jdisanti@amazon.com>"]

publish = false

edition = "2018"

[package.metadata]

cargo-fuzz = true

[dependencies]

libfuzzer-sys = "0.4"

serde_json = { version = "1", features = ["float_roundtrip"] }

smithy-json = { path = ".." }

smithy-types = { path = "../../smithy-types" }

# Prevent this from interfering with workspaces

[workspace]

members = ["."]

[[bin]]

name = "json_deserialize"

path = "fuzz_targets/json_deserialize.rs"

test = false

doc = false

[[bin]]

name = "json_deserialize_corpus_cov"

path = "fuzz_targets/json_deserialize_corpus_cov.rs"

test = false

doc = false

[null, true, false, 0, -1, 2.2, -2.2, 2e5, "test", "\t", "\u0078", [], [1], {}, {"foo": 1}]

"\uD801\uDC37\/\b\n\r\\\t\"\f\u0000"

{ "some_int": 5,

  "some_float": 5.2,

  "some_negative": -5,

  "some_negative_float": -2.4,

  "some_string": "test",

  "some_struct": { "nested": "asdf" },

  "some_array": ["one", "two"] }