efe1c99a3b
Fixes #12280. # Description This removes the dependency on the `difference` crate, which is unmaintained, for `nu-plugin-test-support`. The `similar` crate (Apache-2.0) is used instead, which is a bit larger and more complex, but still suitable for a dev dep for tests. Also switched to use `crossterm` for colors, since `similar` doesn't come with any terminal pretty printing functionality. # User-Facing Changes None - output should be identical. # Tests + Formatting - 🟢 `toolkit fmt` - 🟢 `toolkit clippy` - 🟢 `toolkit test` - 🟢 `toolkit test stdlib`
73 lines
2.1 KiB
Rust
73 lines
2.1 KiB
Rust
//! Test support for [Nushell](https://nushell.sh) plugins.
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//!
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//! # Example
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//!
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//! ```rust
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//! use std::sync::Arc;
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//!
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//! use nu_plugin::*;
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//! use nu_plugin_test_support::PluginTest;
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//! use nu_protocol::{PluginSignature, PipelineData, Type, Span, Value, LabeledError};
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//! use nu_protocol::IntoInterruptiblePipelineData;
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//!
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//! struct LowercasePlugin;
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//! struct Lowercase;
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//!
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//! impl PluginCommand for Lowercase {
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//! type Plugin = LowercasePlugin;
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//!
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//! fn signature(&self) -> PluginSignature {
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//! PluginSignature::build("lowercase")
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//! .usage("Convert each string in a stream to lowercase")
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//! .input_output_type(Type::List(Type::String.into()), Type::List(Type::String.into()))
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//! }
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//!
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//! fn run(
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//! &self,
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//! plugin: &LowercasePlugin,
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//! engine: &EngineInterface,
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//! call: &EvaluatedCall,
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//! input: PipelineData,
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//! ) -> Result<PipelineData, LabeledError> {
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//! let span = call.head;
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//! Ok(input.map(move |value| {
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//! value.as_str()
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//! .map(|string| Value::string(string.to_lowercase(), span))
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//! // Errors in a stream should be returned as values.
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//! .unwrap_or_else(|err| Value::error(err, span))
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//! }, None)?)
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//! }
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//! }
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//!
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//! impl Plugin for LowercasePlugin {
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//! fn commands(&self) -> Vec<Box<dyn PluginCommand<Plugin=Self>>> {
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//! vec![Box::new(Lowercase)]
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//! }
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//! }
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//!
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//! fn test_lowercase() -> Result<(), LabeledError> {
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//! let input = vec![Value::test_string("FooBar")].into_pipeline_data(None);
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//! let output = PluginTest::new("lowercase", LowercasePlugin.into())?
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//! .eval_with("lowercase", input)?
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//! .into_value(Span::test_data());
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//!
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//! assert_eq!(
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//! Value::test_list(vec![
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//! Value::test_string("foobar")
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//! ]),
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//! output
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//! );
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//! Ok(())
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//! }
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//! #
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//! # test_lowercase().unwrap();
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//! ```
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mod diff;
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mod fake_persistent_plugin;
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mod fake_register;
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mod plugin_test;
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mod spawn_fake_plugin;
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pub use plugin_test::PluginTest;
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