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use
command: Don't create a variable with empty record if it doesn't define any constants (#14051)
# Description Fixes: #13967 The key changes lays in `nu-protocol/src/module.rs`, when resolving import pattern, nushell only needs to bring `$module` with a record value if it defines any constants. # User-Facing Changes ```nushell module spam {} use spam ``` Will no longer create a `$spam` variable with an empty record. # Tests + Formatting Adjusted some tests and added some tests.
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@ -161,20 +161,25 @@ impl Module {
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}
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let span = self.span.unwrap_or(backup_span);
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let const_record = Value::record(
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const_rows
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.into_iter()
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.map(|(name, val)| (String::from_utf8_lossy(&name).to_string(), val))
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.collect(),
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span,
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);
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// only needs to bring `$module` with a record value if it defines any constants.
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let constants = if const_rows.is_empty() {
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vec![]
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} else {
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vec![(
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final_name.clone(),
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Value::record(
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const_rows
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.into_iter()
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.map(|(name, val)| (String::from_utf8_lossy(&name).to_string(), val))
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.collect(),
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span,
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),
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)]
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};
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return (
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ResolvedImportPattern::new(
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decls,
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vec![(final_name.clone(), self_id)],
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vec![(final_name, const_record)],
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),
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ResolvedImportPattern::new(decls, vec![(final_name.clone(), self_id)], constants),
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errors,
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);
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};
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@ -238,13 +238,30 @@ fn complex_const_export() {
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let actual = nu!(&inp.join("; "));
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assert_eq!(actual.out, "eats");
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let inp = &[
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MODULE_SETUP,
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"use spam",
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"($spam.eggs.bacon.none | is-empty)",
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];
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let inp = &[MODULE_SETUP, "use spam", "'none' in $spam.eggs.bacon"];
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let actual = nu!(&inp.join("; "));
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assert_eq!(actual.out, "true");
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assert_eq!(actual.out, "false");
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}
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#[test]
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fn only_nested_module_have_const() {
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let setup = r#"
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module spam {
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export module eggs {
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export module bacon {
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export const viking = 'eats'
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export module none {}
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}
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}
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}
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"#;
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let inp = &[setup, "use spam", "$spam.eggs.bacon.viking"];
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let actual = nu!(&inp.join("; "));
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assert_eq!(actual.out, "eats");
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let inp = &[setup, "use spam", "'none' in $spam.eggs.bacon"];
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let actual = nu!(&inp.join("; "));
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assert_eq!(actual.out, "false");
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}
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#[test]
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@ -261,20 +278,16 @@ fn complex_const_glob_export() {
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let actual = nu!(&inp.join("; "));
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assert_eq!(actual.out, "eats");
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let inp = &[MODULE_SETUP, "use spam *", "($eggs.bacon.none | is-empty)"];
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let inp = &[MODULE_SETUP, "use spam *", "'none' in $eggs.bacon"];
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let actual = nu!(&inp.join("; "));
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assert_eq!(actual.out, "true");
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assert_eq!(actual.out, "false");
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}
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#[test]
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fn complex_const_drill_export() {
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let inp = &[
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MODULE_SETUP,
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"use spam eggs bacon none",
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"($none | is-empty)",
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];
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let inp = &[MODULE_SETUP, "use spam eggs bacon none", "$none"];
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let actual = nu!(&inp.join("; "));
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assert_eq!(actual.out, "true");
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assert!(actual.err.contains("variable not found"));
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}
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#[test]
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@ -120,6 +120,11 @@ fn export_consts() -> TestResult {
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)
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}
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#[test]
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fn dont_export_module_name_as_a_variable() -> TestResult {
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fail_test(r#"module spam { }; use spam; $spam"#, "variable not found")
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}
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#[test]
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fn func_use_consts() -> TestResult {
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run_test(
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