Crate perfgate_fake 

Test utilities and fake implementations for perfgate testing.

This crate provides deterministic, configurable test doubles for the perfgate adapter traits. Use these in unit tests and integration tests to avoid I/O and ensure reproducible test results.

Part of the perfgate workspace.

Available Fakes

• FakeProcessRunner - Configurable process runner for testing
• FakeHostProbe - Configurable host probe for testing
• FakeClock - Configurable clock for time-based testing
• MockProcessBuilder - Builder pattern for creating mock process results

Example

use perfgate_fake::{FakeProcessRunner, MockProcessBuilder};
use perfgate_adapters::{ProcessRunner, CommandSpec, RunResult};

let runner = FakeProcessRunner::new();

// Configure a result using the builder
let result = MockProcessBuilder::new()
    .exit_code(0)
    .wall_ms(100)
    .stdout(b"hello world".to_vec())
    .build();

runner.set_result(&["echo", "hello"], result);

// Now when we run the command, we get our configured result
let spec = CommandSpec {
    name: "echo test".to_string(),
    argv: vec!["echo".to_string(), "hello".to_string()],
    cwd: None,
    env: vec![],
    timeout: None,
    output_cap_bytes: 1024,
};

let output = runner.run(&spec).unwrap();
assert_eq!(output.exit_code, 0);
assert_eq!(output.wall_ms, 100);

Structs

CommandSpec

Command to execute.

FakeClock

A fake clock that returns configurable timestamps.

FakeHostProbe

A host probe that returns pre-configured host information.

FakeProcessRunner

A process runner that returns pre-configured results for specific commands.

HostProbeOptions

MockProcessBuilder

Builder for creating mock RunResult instances.

RunResult

Result of a single execution.

Enums

AdapterError

Traits

ProcessRunner