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https://github.com/nushell/nushell
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19beafa865
# Description Change behavior of block evaluation to not print result of intermediate commands. Previously result of every but last pipeline in a block was printed to stdout, and last one was returned  With this change results of intermediate pipelines are discarded after they finish and the last one is returned as before:  Now one should use `print` explicitly to print something to stdout  **Note, that this behavior is not limited to functions!** The scope of this change are all blocks. All of the below are executed as blocks and thus exibited this behavior in the same way:  With this change outputs for all types of blocks are cleaned:  # User-Facing Changes All types of blocks (function bodies, closures, `if` branches, `for` and `loop` bodies e.t.c.) no longer print result of intermediate pipelines. # Tests + Formatting Don't forget to add tests that cover your changes. Make sure you've run and fixed any issues with these commands: - `cargo fmt --all -- --check` to check standard code formatting (`cargo fmt --all` applies these changes) - `cargo clippy --workspace -- -D warnings -D clippy::unwrap_used -A clippy::needless_collect` to check that you're using the standard code style - `cargo test --workspace` to check that all tests pass # After Submitting If your PR had any user-facing changes, update [the documentation](https://github.com/nushell/nushell.github.io) after the PR is merged, if necessary. This will help us keep the docs up to date.
112 lines
2.2 KiB
Rust
112 lines
2.2 KiB
Rust
use nu_test_support::nu;
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#[test]
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fn try_succeed() {
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let output = nu!(
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cwd: ".",
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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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#[test]
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fn try_catch() {
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let output = nu!(
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cwd: ".",
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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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#[test]
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fn catch_can_access_error() {
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let output = nu!(
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cwd: ".",
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"try { foobarbaz } catch { |err| $err | get raw }"
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);
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assert!(output.err.contains("External command failed"));
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}
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#[test]
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fn catch_can_access_error_as_dollar_in() {
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let output = nu!(
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cwd: ".",
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"try { foobarbaz } catch { $in | get raw }"
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);
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assert!(output.err.contains("External command failed"));
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}
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#[test]
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fn external_failed_should_be_caught() {
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let output = nu!(
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cwd: ".",
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"try { nu --testbin fail; echo 'success' } catch { echo 'fail' }"
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);
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assert!(output.out.contains("fail"));
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}
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#[test]
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fn loop_try_break_should_be_successful() {
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let output = nu!(
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cwd: ".",
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"loop { try { print 'successful'; break } catch { print 'failed'; continue } }"
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);
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assert_eq!(output.out, "successful");
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}
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#[test]
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fn loop_catch_break_should_show_failed() {
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let output = nu!(
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cwd: ".",
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"loop {
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try { invalid 1;
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continue; } catch { print 'failed'; break }
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}
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"
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);
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assert_eq!(output.out, "failed");
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}
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#[test]
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fn loop_try_ignores_continue() {
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let output = nu!(
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cwd: ".",
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"mut total = 0;
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for i in 0..10 {
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try { if ($i mod 2) == 0 {
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continue;}
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$total += 1
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} catch { echo 'failed'; break }
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}
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echo $total
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"
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);
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assert_eq!(output.out, "5");
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}
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#[test]
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fn loop_try_break_on_command_should_show_successful() {
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let output = nu!(
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cwd: ".",
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"loop { try { ls; break } catch { echo 'failed';continue }}"
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);
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assert!(!output.out.contains("failed"));
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}
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#[test]
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fn catch_block_can_use_error_object() {
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let output = nu!(
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cwd: ".",
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"try {1 / 0} catch {|err| print ($err | get msg)}"
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);
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assert_eq!(output.out, "Division by zero.")
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}
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