#!/bin/bash

set -e
cd "$(dirname "$0")/.."

matches=$(
    find . \
        \( -path './.git' -o -path './target' \) -prune -o \
        -type f \
        -name '*.rs' \
        -exec grep -nE '^[[:space:]]*mod[[:space:]]+tests[[:space:]]*\{' {} + || true
)

if [[ -z "$matches" ]]; then
    exit 0
fi

cat <<'EOF'
Inline Rust test modules are not allowed. Move test code into a sibling `_tests.rs`
file and include it from the original module like this:

```
#[cfg(test)]
#[path = "..._tests.rs"]
mod tests;
```

EOF
while IFS= read -r match; do
    file=${match%%:*}
    rest=${match#*:}
    line=${rest%%:*}

    if [[ "${GITHUB_ACTIONS:-}" == "true" ]]; then
        echo "::error file=${file#./},line=$line::Move this inline test module to a sibling _tests.rs file."
    else
        echo "$match"
    fi
done <<< "$matches"

exit 1