65 lines
1.8 KiB
Rust
65 lines
1.8 KiB
Rust
//! Bazel-wired proof-of-concept crate reserved for future V8 experiments.
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/// Returns the Bazel label for this proof-of-concept crate.
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#[must_use]
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pub fn bazel_target() -> &'static str {
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"//codex-rs/v8-poc:v8-poc"
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}
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/// Returns the embedded V8 version.
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#[must_use]
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pub fn embedded_v8_version() -> &'static str {
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v8::V8::get_version()
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}
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#[cfg(test)]
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mod tests {
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use pretty_assertions::assert_eq;
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use std::sync::Once;
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use super::bazel_target;
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fn initialize_v8() {
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static INIT: Once = Once::new();
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INIT.call_once(|| {
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v8::V8::initialize_platform(v8::new_default_platform(0, false).make_shared());
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v8::V8::initialize();
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});
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}
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fn evaluate_expression(expression: &str) -> String {
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initialize_v8();
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let isolate = &mut v8::Isolate::new(Default::default());
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v8::scope!(let scope, isolate);
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let context = v8::Context::new(scope, Default::default());
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let scope = &mut v8::ContextScope::new(scope, context);
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let source = v8::String::new(scope, expression).expect("expression should be valid UTF-8");
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let script = v8::Script::compile(scope, source, None).expect("expression should compile");
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let result = script.run(scope).expect("expression should evaluate");
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result.to_rust_string_lossy(scope)
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}
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#[test]
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fn exposes_expected_bazel_target() {
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assert_eq!(bazel_target(), "//codex-rs/v8-poc:v8-poc");
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}
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#[test]
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fn exposes_embedded_v8_version() {
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assert!(!super::embedded_v8_version().is_empty());
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}
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#[test]
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fn evaluates_integer_addition() {
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assert_eq!(evaluate_expression("1 + 2"), "3");
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}
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#[test]
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fn evaluates_string_concatenation() {
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assert_eq!(evaluate_expression("'hello ' + 'world'"), "hello world");
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}
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}
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