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ed1f0eb231
A small follow-up to #7221. This changes the `catch` block from a block to a closure, so that it can access the error returned from the `try` block. This helps with a common scenario: "the `try` block failed, and I want to log why it failed." ### Example  ### Future Work Nu's closure syntax is a little awkward here; it might be nicer to allow something like `catch err { print $err }`. We discussed this on Discord and it will require special parser code similar to what's already done for `for`. I'm not feeling confident enough in my parser knowledge to make that change; I will spend some more time looking at the `for` code but I doubt I will be able to implement anything in the next few days. Volunteers welcome.
39 lines
887 B
Rust
39 lines
887 B
Rust
use nu_test_support::nu;
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use nu_test_support::playground::Playground;
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#[test]
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fn try_succeed() {
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Playground::setup("try_succeed_test", |dirs, _sandbox| {
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let output = nu!(
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cwd: dirs.test(),
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"try { 345 } catch { echo 'hello' }"
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);
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assert!(output.out.contains("345"));
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})
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}
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#[test]
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fn try_catch() {
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Playground::setup("try_catch_test", |dirs, _sandbox| {
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let output = nu!(
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cwd: dirs.test(),
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"try { foobarbaz } catch { echo 'hello' }"
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);
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assert!(output.out.contains("hello"));
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})
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}
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#[test]
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fn catch_can_access_error() {
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Playground::setup("try_catch_test", |dirs, _sandbox| {
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let output = nu!(
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cwd: dirs.test(),
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"try { foobarbaz } catch { |err| $err }"
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);
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assert!(output.err.contains("External command failed"));
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})
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}
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