rrubocop 0.8.15

10x faster RuboCop drop-in. Same output format and configs, without maintaining RuboCop gems.
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//! RSpec/LeakyConstantDeclaration — constants/classes/modules inside example groups.

use tree_sitter::Node;

use crate::cop::rspec::helpers::{inside_spec_group, RSPEC_INCLUDE};
use crate::cop::shared::is_const_assign;
use crate::cop::{Cop, CopConfig};
use crate::diagnostic::Diagnostic;
use crate::parse::source::SourceFile;

pub struct LeakyConstantDeclaration;

fn offense_message(kind: &str) -> &'static str {
    match kind {
        "class" => "Stub class constant instead of declaring explicitly.",
        "module" => "Stub module constant instead of declaring explicitly.",
        _ => "Stub constant instead of declaring explicitly.",
    }
}

impl Cop for LeakyConstantDeclaration {
    fn name(&self) -> &'static str {
        "RSpec/LeakyConstantDeclaration"
    }

    fn default_include(&self) -> &'static [&'static str] {
        RSPEC_INCLUDE
    }

    fn interested_node_kinds(&self) -> &'static [&'static str] {
        &["assignment", "class", "module"]
    }

    fn check_node(
        &self,
        source: &SourceFile,
        node: Node<'_>,
        _config: &CopConfig,
        diagnostics: &mut Vec<Diagnostic>,
        _corrections: Option<&mut Vec<crate::correction::Correction>>,
    ) {
        let kind = node.kind();
        if kind == "assignment" && !is_const_assign(node) {
            return;
        }
        if !inside_spec_group(source, node) {
            return;
        }
        let (line, col) = source.offset_to_line_col(node.start_byte());
        diagnostics.push(self.diagnostic(source, line, col, offense_message(kind).into()));
    }
}

#[cfg(test)]
mod tests {
    use super::*;
    crate::cop_fixture_tests!(LeakyConstantDeclaration, "cops/rspec/leaky_constant_declaration");
}