1 files changed, 107 insertions, 0 deletions
diff --git a/src/tools/rustfmt/ci/integration.sh b/src/tools/rustfmt/ci/integration.sh
new file mode 100755
index 00000000000..13a3ecaa196
--- /dev/null
+++ b/src/tools/rustfmt/ci/integration.sh
@@ -0,0 +1,107 @@
+#!/usr/bin/env bash
+
+set -ex
+
+: ${INTEGRATION?"The INTEGRATION environment variable must be set."}
+
+# FIXME: this means we can get a stale cargo-fmt from a previous run.
+#
+# `which rustfmt` fails if rustfmt is not found. Since we don't install
+# `rustfmt` via `rustup`, this is the case unless we manually install it. Once
+# that happens, `cargo install --force` will be called, which installs
+# `rustfmt`, `cargo-fmt`, etc to `~/.cargo/bin`. This directory is cached by
+# travis (see `.travis.yml`'s "cache" key), such that build-bots that arrive
+# here after the first installation will find `rustfmt` and won't need to build
+# it again.
+#
+#which cargo-fmt || cargo install --force
+CFG_RELEASE=nightly CFG_RELEASE_CHANNEL=nightly cargo install --path . --force 
+
+echo "Integration tests for: ${INTEGRATION}"
+cargo fmt -- --version
+
+# Checks that:
+#
+# * `cargo fmt --all` succeeds without any warnings or errors
+# * `cargo fmt --all -- --check` after formatting returns success
+# * `cargo test --all` still passes (formatting did not break the build)
+function check_fmt_with_all_tests {
+    check_fmt_base "--all"
+    return $?
+}
+
+# Checks that:
+#
+# * `cargo fmt --all` succeeds without any warnings or errors
+# * `cargo fmt --all -- --check` after formatting returns success
+# * `cargo test --lib` still passes (formatting did not break the build)
+function check_fmt_with_lib_tests {
+    check_fmt_base "--lib"
+    return $?
+}
+
+function check_fmt_base {
+    local test_args="$1"
+    local build=$(cargo test $test_args 2>&1)
+    if [[ "$build" =~ "build failed" ]] || [[ "$build" =~ "test result: FAILED." ]]; then
+          return 0
+    fi
+    touch rustfmt.toml
+    cargo fmt --all -v |& tee rustfmt_output
+    if [[ ${PIPESTATUS[0]} != 0 ]]; then
+        cat rustfmt_output
+        return 1
+    fi
+    cat rustfmt_output
+    ! cat rustfmt_output | grep -q "internal error"
+    if [[ $? != 0 ]]; then
+        return 1
+    fi
+    ! cat rustfmt_output | grep -q "warning"
+    if [[ $? != 0 ]]; then
+        return 1
+    fi
+    ! cat rustfmt_output | grep -q "Warning"
+    if [[ $? != 0 ]]; then
+        return 1
+    fi
+    cargo fmt --all -- --check |& tee rustfmt_check_output
+    if [[ ${PIPESTATUS[0]} != 0 ]]; then
+        cat rustfmt_check_output
+        return 1
+    fi
+    cargo test $test_args
+    if [[ $? != 0 ]]; then
+        return $?
+    fi
+}
+
+function show_head {
+    local head=$(git rev-parse HEAD)
+    echo "Head commit of ${INTEGRATION}: $head"
+}
+
+case ${INTEGRATION} in
+    cargo)
+        git clone --depth=1 https://github.com/rust-lang/${INTEGRATION}.git
+        cd ${INTEGRATION}
+        show_head
+        export CFG_DISABLE_CROSS_TESTS=1
+        check_fmt_with_all_tests
+        cd -
+        ;;
+    crater)
+        git clone --depth=1 https://github.com/rust-lang-nursery/${INTEGRATION}.git
+        cd ${INTEGRATION}
+        show_head
+        check_fmt_with_lib_tests
+        cd -
+        ;;
+    *)
+        git clone --depth=1 https://github.com/rust-lang-nursery/${INTEGRATION}.git
+        cd ${INTEGRATION}
+        show_head
+        check_fmt_with_all_tests
+        cd -
+        ;;
+esac