test/

Test samples & corpus

This directory holds Godzilla's vulnerable code samples and the corpus test that turns them into first-class, asserted test cases.

Layout

test/
  go/<case>/      main.go + go.mod   (each is its own ISOLATED Go module)
  python/<case>/  app.py
  js/<case>/      app.js
  java/<case>/    *.java, or a Maven/Gradle project  (needs a JDK 24+ `java`;
                                     build-tool projects are opt-in, see below)
  rust/<case>/    main.rs            (needs `rustc`)
  ruby/<case>/    app.rb             (needs `ruby`)
  c/<case>/       *.c                (opt-in: -tags llvm + clang)
  cpp/<case>/     *.cpp              (opt-in: -tags llvm + clang)
  corpus/         the Go test harness that scans every sample and checks results

Coverage spans common web frameworks as well as the language stdlibs: Gin, Gorm, Echo and Chi (Go); Django and FastAPI, plus Flask (Python); Express and Koa — Fastify is matched by the same req.* globs (JavaScript); and Spring (Java). Each framework has at least one true-positive sample and, where precision is at stake, a *_safe false-positive control (parameterized queries, ORM-safe methods, etc.).

Each sample directory carries an expected.yaml declaring what the scan must produce for it. The corpus skips a language's samples when its toolchain is absent (python3/java/rustc/ruby) or, for C/C++, when the binary was built without -tags llvm — so go test ./... stays green on a minimal environment.

Java build-tool samples. A Java sample may be a full Maven (pom.xml) or Gradle (build.gradle) project rather than loose .java: the Java frontend builds it with its own tool so third-party dependencies (e.g. a Spring app's spring-web / spring-jdbc) are on the classpath, then analyzes the compiled bytecode. Because that fetches dependencies over the network, such samples are opt-in — the corpus skips them unless GODZILLA_SPRING_E2E=1 is set and a build tool (wrapper, or mvn/gradle on PATH) is available:

GODZILLA_SPRING_E2E=1 go test ./test/corpus/ -run TestCorpus/java/spring_boot -v

Spring's annotated controller parameters (@RequestParam, @PathVariable, @RequestBody, …) are treated as taint sources. The spring_annotation sample exercises that mechanism deterministically with the JDK alone (it stubs the annotations), so it runs by default; spring_boot validates the real Gradle build against actual Spring jars.

Rust Cargo samples. A Rust sample may be a Cargo.toml project rather than a loose .rs file: the Rust frontend builds it with cargo rustc -- --emit=mir so a dependency crate (a web framework) resolves. A project with no external deps (e.g. web_command_injection, which uses a local request stub) runs by default when cargo is present; a project with an external dependency (e.g. web_rouille, using the real rouille framework) fetches crates over the network and is therefore opt-in, skipped unless GODZILLA_RUST_E2E=1:

GODZILLA_RUST_E2E=1 go test ./test/corpus/ -run TestCorpus/rust/web_rouille -v

Taint sources across the samples model the real attack surface — an untrusted HTTP request parameter / header / body — rather than environment variables (env/args remain a secondary CLI/CGI source; in C, CGI exposes HTTP data as QUERY_STRING / HTTP_* env vars and the body on stdin).

Running

Everything runs through the root module's test command:

go test ./...           # unit tests + the sample corpus + isolated-module builds
go test -short ./...    # same, but skip the slow isolated-module (cgo) builds
go test ./test/corpus/ -v   # one PASS/FAIL line per sample

test/corpus/ is part of the root module (no go.mod of its own), so ./... includes it. The Go sample sub-modules under test/go/* have their own go.mod and are therefore excluded from ./... — test/corpus's TestSampleModulesBuild compile-checks them separately (go build/go vet inside each).

The expected.yaml manifest

findings:                 # rules that MUST fire; empty list => sample must be CLEAN
  - rule: go-sql-injection
    min: 2                # at least this many findings for that rule (default 1)
    line: 62              # optional: a finding of this rule must land at this sink line
    sink: Query           # optional: a finding's sink callee must contain this substring

TestCorpus runs the real scan pipeline (internal/scan.Scan with the built-in rules) over each sample and asserts:

1. every listed rule fires at least min times, and
2. no other rule fires — a false-positive guard (e.g. complex_logic declares findings: [], so any finding on that benign code fails the build), and
3. if line/sink are given, at least one finding of that rule matches that location — an independent, hand-written ground truth that upgrades the oracle from "rule fired" to "rule fired at the right place" (the count-only oracle is self-generated by RegenerateManifests, so it can't catch a wrong-location finding; line/sink are added by hand and not overwritten by regeneration).

Adding a sample

1. Create test/<lang>/<case>/ with the vulnerable source (Go samples also need a minimal go.mod; keep any dependencies inside that isolated module).
2. Add an expected.yaml describing the intended findings.
3. Run go test ./test/corpus/ -run "TestCorpus/<lang>/<case>" -v.

To (re)generate the manifests from the current scan output after a rule change — then review the diff so no regression is frozen in:

GODZILLA_REGEN=1 go test ./test/corpus/ -run RegenerateManifests -v