build: Add daily fuzzing

Signed-off-by: Dmitry Dygalo <[email protected]>

.github/workflows/ci.yml

@@ -193,7 +193,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        target: ["compile"]
+        target: ["compile", "validation"]
     runs-on: ubuntu-22.04
     steps:
       - uses: actions/checkout@v4
@@ -206,4 +206,4 @@ jobs:
 
       - run: cargo install cargo-fuzz
 
-      - run: cargo +nightly fuzz run --release ${{ matrix.target }} fuzz/seeds/${{ matrix.target }} -- -dict=fuzz/dict -max_total_time=60
+      - run: cargo +nightly fuzz run --release ${{ matrix.target }} fuzz/seeds -- -dict=fuzz/dict -max_total_time=60

.github/workflows/daily.yml

@@ -11,7 +11,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        target: ["compile"]
+        target: ["compile", "validation"]
     runs-on: ubuntu-22.04
     steps:
       - uses: actions/checkout@v4

Justfile

@@ -2,7 +2,8 @@ default:
   @just --list
 
 fuzz TARGET:
-  cargo +nightly fuzz run --release {{TARGET}} fuzz/corpus/{{TARGET}} fuzz/seeds/{{TARGET}} -- -dict=fuzz/dict
+  mkdir -p fuzz/corpus/{{TARGET}}
+  cargo +nightly fuzz run --release {{TARGET}} fuzz/corpus/{{TARGET}} fuzz/seeds -- -dict=fuzz/dict
 
 lint-rs:
   cargo +nightly fmt --all

fuzz/Cargo.toml

@@ -24,3 +24,10 @@ path = "fuzz_targets/compile.rs"
 test = false
 doc = false
 bench = false
+
+[[bin]]
+name = "validation"
+path = "fuzz_targets/validation.rs"
+test = false
+doc = false
+bench = false

fuzz/fuzz_targets/validation.rs

@@ -0,0 +1,21 @@
+#![no_main]
+use jsonschema::BasicOutput;
+use libfuzzer_sys::fuzz_target;
+
+fuzz_target!(|data: (&[u8], &[u8])| {
+    let (schema, instance) = data;
+    if let Ok(schema) = serde_json::from_slice(schema) {
+        if let Ok(compiled) = jsonschema::compile(&schema) {
+            if let Ok(instance) = serde_json::from_slice(instance) {
+                let _ = compiled.is_valid(&instance);
+                if let Err(errors) = compiled.validate(&instance) {
+                    for error in errors {
+                        let _ = error.to_string();
+                    }
+                }
+                let output: BasicOutput = compiled.apply(&instance).basic();
+                let _ = serde_json::to_value(output).expect("Failed to serialize");
+            }
+        }
+    }
+});