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#!/usr/bin/env bash
# Script to generate coverage locally
#
# Output: `lcov.info` file
#
# Relies on `cargo-llvm-cov`. Install via `cargo install cargo-llvm-cov`
# https://github.com/taiki-e/cargo-llvm-cov
# You probably have to run `cargo llvm-cov clean` once manually,
# as you have to confirm to install additional tooling for your rustup toolchain.
# Else the script might stall waiting for your `y<ENTER>`
# Some of the internal tests rely on the exact cargo profile
# (This is somewhat criminal itself)
# but we have to signal to the tests that we use the `ci` `--profile`
export NUSHELL_CARGO_TARGET=ci
# Manual gathering of coverage to catch invocation of the `nu` binary.
# This is relevant for tests using the `nu!` macro from `nu-test-support`
# see: https://github.com/taiki-e/cargo-llvm-cov#get-coverage-of-external-tests
# Enable LLVM coverage tracking through environment variables
source <(cargo llvm-cov show-env --export-prefix)
cargo llvm-cov clean --workspace
# Apparently we need to explicitly build the necessary parts
# using the `--profile=ci` is basically `debug` build with unnecessary symbols stripped
# leads to smaller binaries and potential savings when compiling and running
cargo build --workspace --profile=ci
cargo test --workspace --profile=ci
# You need to provide the used profile to find the raw data
cargo llvm-cov report --lcov --output-path lcov.info --profile=ci
# To display the coverage in your editor see:
#
# - https://marketplace.visualstudio.com/items?itemName=ryanluker.vscode-coverage-gutters
# - https://github.com/umaumax/vim-lcov
# - https://github.com/andythigpen/nvim-coverage (probably needs some additional config)
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