language: rust
cache: cargo
rust:
  - stable
  - beta
  - nightly
os: linux

# always test things that aren't pushes (like PRs)
# never test tags or pushes to non-master branches (wait for PR)
# https://github.com/travis-ci/travis-ci/issues/2200#issuecomment-441395545)
if: type != push OR (tag IS blank AND branch = master)

before_script:
 - if [[ "$TRAVIS_BUILD_STAGE_NAME" == "Integration" || "$TRAVIS_BUILD_STAGE_NAME" == "Coverage" ]]; then
     docker pull greenmail/standalone:1.5.9 &&
     docker run -d -e GREENMAIL_OPTS='-Dgreenmail.setup.test.all -Dgreenmail.hostname=0.0.0.0 -Dgreenmail.auth.disabled -Dgreenmail.verbose' -p 3025:3025 -p 3110:3110 -p 3143:3143 -p 3465:3465 -p 3993:3993 -p 3995:3995 greenmail/standalone:1.5.9;
   fi

# an entry in stage=test will be generated for each rust version.
# each entry will run these commands.
script:
  - cargo test --examples
  - cargo test --doc
  - cargo test --lib
jobs:
  allow_failures:
    - rust: nightly
  include:
    - &check
      stage: check # do a pre-screen to make sure this is even worth testing
      script: cargo check --all-targets
      rust: stable
      # <1.24 doesn't work because of lazy-static 1.2.0
      # <1.26.2 doesn't work because of nom 4.1.1
    - <<: *check # also test oldest known-good stable
      rust: 1.26.2
    - stage: test
      rust: stable
      os: osx
    - rust: stable
      os: windows
    - &integration
      stage: integration # make integration tests its own stage
      script: cargo test --tests
      sudo: required
      services:
        - docker
      addons:
        apt:
          packages:
            - libssl-dev
      rust: stable
    - <<: *integration
      rust: beta
    - <<: *integration
      rust: nightly
    - stage: lint # we lint on beta to future-proof
      name: "Rust: beta, rustfmt"
      rust: beta
      script:
        - rustup component add rustfmt-preview
        - cargo fmt -v -- --check
    - name: "Rust: nightly, rustfmt" # and on nightly with allow_fail
      rust: nightly
      script:
        - rustup component add rustfmt-preview
        - cargo fmt -v -- --check
    - name: "Rust: beta, clippy"
      rust: beta
      script:
        - rustup component add clippy-preview
        - touch ./src/lib.rs && cargo clippy -- -D warnings
    - name: "Rust: nightly, clippy"
      rust: nightly
      script:
        - rustup component add clippy-preview
        - touch ./src/lib.rs && cargo clippy -- -D warnings
    - <<: *integration
      stage: coverage
      rust: nightly
      env: CACHE_NAME=coverage
      script:
        - RUSTFLAGS="--cfg procmacro2_semver_exempt" cargo install --force cargo-tarpaulin || true
        - cargo tarpaulin --out Xml
        - bash <(curl -s https://codecov.io/bash)
        - cargo clean -p imap # ensure we don't cache build for coverage
stages:
 - check
 - test
 - integration
 - lint
 - coverage

after_failure:
 - if [[ "$TRAVIS_BUILD_STAGE_NAME" == "Integration" || "$TRAVIS_BUILD_STAGE_NAME" == "Coverage" ]]; then docker logs $(docker ps -q); fi