nushell/crates/nu-command/tests/commands/with_env.rs

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2020-05-06 05:56:31 +02:00
use nu_test_support::nu;
#[test]
fn with_env_extends_environment() {
let actual = nu!("with-env { FOO: BARRRR } {echo $env} | get FOO");
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assert_eq!(actual.out, "BARRRR");
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}
#[test]
fn with_env_shorthand() {
let actual = nu!("FOO=BARRRR echo $env | get FOO");
assert_eq!(actual.out, "BARRRR");
}
#[test]
fn shorthand_doesnt_reorder_arguments() {
let actual = nu!("FOO=BARRRR nu --testbin cococo first second");
assert_eq!(actual.out, "first second");
}
#[test]
fn with_env_shorthand_trims_quotes() {
let actual = nu!("FOO='BARRRR' echo $env | get FOO");
assert_eq!(actual.out, "BARRRR");
}
#[test]
fn with_env_and_shorthand_same_result() {
let actual_shorthand = nu!("FOO='BARRRR' echo $env | get FOO");
let actual_normal = nu!("with-env { FOO: BARRRR } {echo $env} | get FOO");
assert_eq!(actual_shorthand.out, actual_normal.out);
}
#[test]
fn test_redirection2() {
let actual =
nu!("let x = (FOO=BAR nu --testbin cococo niceenvvar); $x | str trim | str length");
assert_eq!(actual.out, "10");
}
Allow environment variables to be hidden (#3950) * Allow environment variables to be hidden This change allows environment variables in Nushell to have a value of `Nothing`, which can be set by the user by passing `$nothing` to `let-env` and friends. Environment variables with a value of Nothing behave as if they are not set at all. This allows a user to shadow the value of an environment variable in a parent scope, effectively removing it from their current scope. This was not possible before, because a scope can not affect its parent scopes. This is a workaround for issues like #3920. Additionally, this allows a user to simultaneously set, change and remove multiple environment variables via `load-env`. Any environment variables set to $nothing will be hidden and thus act as if they are removed. This simplifies working with virtual environments, which rely on setting multiple environment variables, including PATH, to specific values, and remove/change them on deactivation. One surprising behavior is that an environment variable set to $nothing will act as if it is not set when querying it (via $nu.env.X), but it is still possible to remove it entirely via `unlet-env`. If the same environment variable is present in the parent scope, the value in the parent scope will be visible to the user. This might be surprising behavior to users who are not familiar with the implementation details. An additional corner case is the the shorthand form of `with-env` does not work with this feature. Using `X=$nothing` will set $nu.env.X to the string "$nothing". The long-form works as expected: `with-env [X $nothing] {...}`. * Remove unused import * Allow all primitives to be convert to strings
2021-08-26 15:15:58 +02:00
#[test]
fn with_env_hides_variables_in_parent_scope() {
let actual = nu!(r#"
remove let-env, focus on mutating $env (#9574) # Description For years, Nushell has used `let-env` to set a single environment variable. As our work on scoping continued, we refined what it meant for a variable to be in scope using `let` but never updated how `let-env` would work. Instead, `let-env` confusingly created mutations to the command's copy of `$env`. So, to help fix the mental model and point people to the right way of thinking about what changing the environment means, this PR removes `let-env` to encourage people to think of it as updating the command's environment variable via mutation. Before: ``` let-env FOO = "BAR" ``` Now: ``` $env.FOO = "BAR" ``` It's also a good reminder that the environment owned by the command is in the `$env` variable rather than global like it is in other shells. # User-Facing Changes BREAKING CHANGE BREAKING CHANGE This completely removes `let-env FOO = "BAR"` so that we can focus on `$env.FOO = "BAR"`. # 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 -A clippy::result_large_err` to check that you're using the standard code style - `cargo test --workspace` to check that all tests pass - `cargo run -- crates/nu-std/tests/run.nu` to run the tests for the standard library > **Note** > from `nushell` you can also use the `toolkit` as follows > ```bash > use toolkit.nu # or use an `env_change` hook to activate it automatically > toolkit check pr > ``` --> # After / Before Submitting integration scripts to update: - :heavy_check_mark: [starship](https://github.com/starship/starship/blob/master/src/init/starship.nu) - :heavy_check_mark: [virtualenv](https://github.com/pypa/virtualenv/blob/main/src/virtualenv/activation/nushell/activate.nu) - :heavy_check_mark: [atuin](https://github.com/ellie/atuin/blob/main/atuin/src/shell/atuin.nu) (PR: https://github.com/ellie/atuin/pull/1080) - :x: [zoxide](https://github.com/ajeetdsouza/zoxide/blob/main/templates/nushell.txt) (PR: https://github.com/ajeetdsouza/zoxide/pull/587) - :heavy_check_mark: [oh-my-posh](https://github.com/JanDeDobbeleer/oh-my-posh/blob/main/src/shell/scripts/omp.nu) (pr: https://github.com/JanDeDobbeleer/oh-my-posh/pull/4011)
2023-06-30 21:57:51 +02:00
$env.FOO = "1"
Disable pipeline echo (#8292) # 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 ![image](https://user-images.githubusercontent.com/17511668/222550110-3f62fbed-432c-4b46-b9b1-4cb45a1f893e.png) With this change results of intermediate pipelines are discarded after they finish and the last one is returned as before: ![image](https://user-images.githubusercontent.com/17511668/222550346-f1e74f80-f6b6-4aa3-98d6-888ea4cb4915.png) Now one should use `print` explicitly to print something to stdout ![image](https://user-images.githubusercontent.com/17511668/222923955-fda0d77b-41b4-4f91-a80f-12b0a1880c05.png) **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: ![image](https://user-images.githubusercontent.com/17511668/222924062-342c15de-4273-4bf5-8b39-fe6e3aa96076.png) With this change outputs for all types of blocks are cleaned: ![image](https://user-images.githubusercontent.com/17511668/222924118-7d51c27e-04bb-43e5-8efe-38b484683bfe.png) # 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.
2023-03-16 23:53:46 +01:00
print $env.FOO
with-env { FOO: null } {
echo $env.FOO
}
Disable pipeline echo (#8292) # 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 ![image](https://user-images.githubusercontent.com/17511668/222550110-3f62fbed-432c-4b46-b9b1-4cb45a1f893e.png) With this change results of intermediate pipelines are discarded after they finish and the last one is returned as before: ![image](https://user-images.githubusercontent.com/17511668/222550346-f1e74f80-f6b6-4aa3-98d6-888ea4cb4915.png) Now one should use `print` explicitly to print something to stdout ![image](https://user-images.githubusercontent.com/17511668/222923955-fda0d77b-41b4-4f91-a80f-12b0a1880c05.png) **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: ![image](https://user-images.githubusercontent.com/17511668/222924062-342c15de-4273-4bf5-8b39-fe6e3aa96076.png) With this change outputs for all types of blocks are cleaned: ![image](https://user-images.githubusercontent.com/17511668/222924118-7d51c27e-04bb-43e5-8efe-38b484683bfe.png) # 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.
2023-03-16 23:53:46 +01:00
print $env.FOO
"#);
Allow environment variables to be hidden (#3950) * Allow environment variables to be hidden This change allows environment variables in Nushell to have a value of `Nothing`, which can be set by the user by passing `$nothing` to `let-env` and friends. Environment variables with a value of Nothing behave as if they are not set at all. This allows a user to shadow the value of an environment variable in a parent scope, effectively removing it from their current scope. This was not possible before, because a scope can not affect its parent scopes. This is a workaround for issues like #3920. Additionally, this allows a user to simultaneously set, change and remove multiple environment variables via `load-env`. Any environment variables set to $nothing will be hidden and thus act as if they are removed. This simplifies working with virtual environments, which rely on setting multiple environment variables, including PATH, to specific values, and remove/change them on deactivation. One surprising behavior is that an environment variable set to $nothing will act as if it is not set when querying it (via $nu.env.X), but it is still possible to remove it entirely via `unlet-env`. If the same environment variable is present in the parent scope, the value in the parent scope will be visible to the user. This might be surprising behavior to users who are not familiar with the implementation details. An additional corner case is the the shorthand form of `with-env` does not work with this feature. Using `X=$nothing` will set $nu.env.X to the string "$nothing". The long-form works as expected: `with-env [X $nothing] {...}`. * Remove unused import * Allow all primitives to be convert to strings
2021-08-26 15:15:58 +02:00
assert_eq!(actual.out, "11");
}
#[test]
fn with_env_shorthand_can_not_hide_variables() {
let actual = nu!(r#"
remove let-env, focus on mutating $env (#9574) # Description For years, Nushell has used `let-env` to set a single environment variable. As our work on scoping continued, we refined what it meant for a variable to be in scope using `let` but never updated how `let-env` would work. Instead, `let-env` confusingly created mutations to the command's copy of `$env`. So, to help fix the mental model and point people to the right way of thinking about what changing the environment means, this PR removes `let-env` to encourage people to think of it as updating the command's environment variable via mutation. Before: ``` let-env FOO = "BAR" ``` Now: ``` $env.FOO = "BAR" ``` It's also a good reminder that the environment owned by the command is in the `$env` variable rather than global like it is in other shells. # User-Facing Changes BREAKING CHANGE BREAKING CHANGE This completely removes `let-env FOO = "BAR"` so that we can focus on `$env.FOO = "BAR"`. # 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 -A clippy::result_large_err` to check that you're using the standard code style - `cargo test --workspace` to check that all tests pass - `cargo run -- crates/nu-std/tests/run.nu` to run the tests for the standard library > **Note** > from `nushell` you can also use the `toolkit` as follows > ```bash > use toolkit.nu # or use an `env_change` hook to activate it automatically > toolkit check pr > ``` --> # After / Before Submitting integration scripts to update: - :heavy_check_mark: [starship](https://github.com/starship/starship/blob/master/src/init/starship.nu) - :heavy_check_mark: [virtualenv](https://github.com/pypa/virtualenv/blob/main/src/virtualenv/activation/nushell/activate.nu) - :heavy_check_mark: [atuin](https://github.com/ellie/atuin/blob/main/atuin/src/shell/atuin.nu) (PR: https://github.com/ellie/atuin/pull/1080) - :x: [zoxide](https://github.com/ajeetdsouza/zoxide/blob/main/templates/nushell.txt) (PR: https://github.com/ajeetdsouza/zoxide/pull/587) - :heavy_check_mark: [oh-my-posh](https://github.com/JanDeDobbeleer/oh-my-posh/blob/main/src/shell/scripts/omp.nu) (pr: https://github.com/JanDeDobbeleer/oh-my-posh/pull/4011)
2023-06-30 21:57:51 +02:00
$env.FOO = "1"
Disable pipeline echo (#8292) # 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 ![image](https://user-images.githubusercontent.com/17511668/222550110-3f62fbed-432c-4b46-b9b1-4cb45a1f893e.png) With this change results of intermediate pipelines are discarded after they finish and the last one is returned as before: ![image](https://user-images.githubusercontent.com/17511668/222550346-f1e74f80-f6b6-4aa3-98d6-888ea4cb4915.png) Now one should use `print` explicitly to print something to stdout ![image](https://user-images.githubusercontent.com/17511668/222923955-fda0d77b-41b4-4f91-a80f-12b0a1880c05.png) **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: ![image](https://user-images.githubusercontent.com/17511668/222924062-342c15de-4273-4bf5-8b39-fe6e3aa96076.png) With this change outputs for all types of blocks are cleaned: ![image](https://user-images.githubusercontent.com/17511668/222924118-7d51c27e-04bb-43e5-8efe-38b484683bfe.png) # 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.
2023-03-16 23:53:46 +01:00
print $env.FOO
FOO=null print $env.FOO
print $env.FOO
"#);
Allow environment variables to be hidden (#3950) * Allow environment variables to be hidden This change allows environment variables in Nushell to have a value of `Nothing`, which can be set by the user by passing `$nothing` to `let-env` and friends. Environment variables with a value of Nothing behave as if they are not set at all. This allows a user to shadow the value of an environment variable in a parent scope, effectively removing it from their current scope. This was not possible before, because a scope can not affect its parent scopes. This is a workaround for issues like #3920. Additionally, this allows a user to simultaneously set, change and remove multiple environment variables via `load-env`. Any environment variables set to $nothing will be hidden and thus act as if they are removed. This simplifies working with virtual environments, which rely on setting multiple environment variables, including PATH, to specific values, and remove/change them on deactivation. One surprising behavior is that an environment variable set to $nothing will act as if it is not set when querying it (via $nu.env.X), but it is still possible to remove it entirely via `unlet-env`. If the same environment variable is present in the parent scope, the value in the parent scope will be visible to the user. This might be surprising behavior to users who are not familiar with the implementation details. An additional corner case is the the shorthand form of `with-env` does not work with this feature. Using `X=$nothing` will set $nu.env.X to the string "$nothing". The long-form works as expected: `with-env [X $nothing] {...}`. * Remove unused import * Allow all primitives to be convert to strings
2021-08-26 15:15:58 +02:00
assert_eq!(actual.out, "1null1");
Allow environment variables to be hidden (#3950) * Allow environment variables to be hidden This change allows environment variables in Nushell to have a value of `Nothing`, which can be set by the user by passing `$nothing` to `let-env` and friends. Environment variables with a value of Nothing behave as if they are not set at all. This allows a user to shadow the value of an environment variable in a parent scope, effectively removing it from their current scope. This was not possible before, because a scope can not affect its parent scopes. This is a workaround for issues like #3920. Additionally, this allows a user to simultaneously set, change and remove multiple environment variables via `load-env`. Any environment variables set to $nothing will be hidden and thus act as if they are removed. This simplifies working with virtual environments, which rely on setting multiple environment variables, including PATH, to specific values, and remove/change them on deactivation. One surprising behavior is that an environment variable set to $nothing will act as if it is not set when querying it (via $nu.env.X), but it is still possible to remove it entirely via `unlet-env`. If the same environment variable is present in the parent scope, the value in the parent scope will be visible to the user. This might be surprising behavior to users who are not familiar with the implementation details. An additional corner case is the the shorthand form of `with-env` does not work with this feature. Using `X=$nothing` will set $nu.env.X to the string "$nothing". The long-form works as expected: `with-env [X $nothing] {...}`. * Remove unused import * Allow all primitives to be convert to strings
2021-08-26 15:15:58 +02:00
}