#!/bin/bash
#
# Copyright 2016 The Bazel Authors. All rights reserved.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#    http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
#
# An end-to-end test that Bazel's experimental UI produces reasonable output.

# Load the test setup defined in the parent directory
CURRENT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
source "${CURRENT_DIR}/../integration_test_setup.sh" \
  || { echo "integration_test_setup.sh not found!" >&2; exit 1; }

#### SETUP #############################################################

set -e

test_ignores_comment_lines() {
    rm -rf work && mkdir work && cd work
    create_workspace_with_default_repos WORKSPACE
    mkdir -p ignoreme
    echo Not a valid BUILD file > ignoreme/BUILD
    mkdir -p '#foo/bar'
    cat > '#foo/bar/BUILD' <<'EOI'
genrule(
  name = "out",
  outs = ["out.txt"],
  cmd = "echo Hello World > $@",
)
EOI
    cat > .bazelignore <<'EOI'
# Some comment
#foo/bar
ignoreme
EOI
    bazel build '//#foo/bar/...' || fail "Could not build valid target"
}

test_does_not_glob_into_ignored_directory() {
    rm -rf work && mkdir work && cd work
    create_workspace_with_default_repos WORKSPACE

    echo 'filegroup(name="f", srcs=glob(["**"]))' > BUILD
    echo 'ignored' > .bazelignore
    mkdir -p ignored/pkg
    echo 'filegroup(name="f", srcs=glob(["**"]))' > ignored/pkg/BUILD
    touch ignored/pkg/a
    touch ignored/file
    bazel query //:all-targets > "$TEST_TMPDIR/targets"
    assert_not_contains "//:ignored/file" "$TEST_TMPDIR/targets"
    assert_not_contains "//:ignored/pkg/BUILD" "$TEST_TMPDIR/targets"
    assert_not_contains "//:ignored/pkg/a" "$TEST_TMPDIR/targets"

    # This weird line tests whether .bazelignore also stops the Skyframe-based
    # glob. Globbing (as of 2019 Oct) is done in a hybrid fashion: we do the
    # non-Skyframe globbing because it's faster and Skyframe globbing because
    # it's more incremental. In the first run, we get the results of the
    # non-Skyframe globbing, but if we invalidate the BUILD file, the result of
    # the non-Skyframe glob is invalidated and but the better incrementality
    # allows the result of the Skyframe glob to be cached.
    echo "# change" >> BUILD
    bazel query //:all-targets > "$TEST_TMPDIR/targets"
    assert_not_contains "//:ignored/file" "$TEST_TMPDIR/targets"
    assert_not_contains "//:ignored/pkg/BUILD" "$TEST_TMPDIR/targets"
    assert_not_contains "//:ignored/pkg/a" "$TEST_TMPDIR/targets"

    echo > .bazelignore
    bazel query //:all-targets > "$TEST_TMPDIR/targets"
    assert_contains "//:ignored/file" "$TEST_TMPDIR/targets"
    bazel query //ignored/pkg:all-targets > "$TEST_TMPDIR/targets"
    assert_contains "//ignored/pkg:a" "$TEST_TMPDIR/targets"
}

test_broken_BUILD_files_ignored() {
    rm -rf work && mkdir work && cd work
    create_workspace_with_default_repos WORKSPACE
    mkdir -p ignoreme/deep/reallydep/stillignoreme
    echo This is a broken BUILD file > ignoreme/BUILD
    echo This is a broken BUILD file > ignoreme/deep/BUILD
    echo This is a broken BUILD file > ignoreme/deep/reallydep/BUILD
    echo This is a broken BUILD file > ignoreme/deep/reallydep/stillignoreme/BUILD
    touch BUILD
    bazel build ... >& "$TEST_log" && fail "Expected failure" || :

    echo ignoreme > .bazelignore
    bazel build ... >& "$TEST_log" \
        || fail "directory mentioned in .bazelignore not ignored as it should"
}

test_broken_BUILD_files_ignored_subdir() {
    rm -rf work && mkdir work && cd work
    create_workspace_with_default_repos WORKSPACE
    mkdir -p ignoreme/deep || fail "Couldn't mkdir"
    ln -s deeper ignoreme/deep/deeper || fail "Couldn't create cycle"
    touch BUILD
    bazel build //ignoreme/deep/... >& "$TEST_log" && fail "Expected failure" \
        || :
    expect_log "circular symlinks detected"
    expect_log "ignoreme/deep/deeper"

    echo ignoreme > .bazelignore
    bazel build //ignoreme/deep/... >& "$TEST_log" || fail "Expected success"
    expect_log "WARNING: Pattern '//ignoreme/deep/...' was filtered out by ignored directory 'ignoreme'"
    expect_not_log "circular symlinks detected"
    expect_not_log "ignoreme/deep/deeper"

    bazel query //ignoreme/deep/... >& "$TEST_log" || fail "Expected success"
    expect_log "WARNING: Pattern '//ignoreme/deep/...' was filtered out by ignored directory 'ignoreme'"
    expect_not_log "circular symlinks detected"
    expect_not_log "ignoreme/deep/deeper"
    expect_log "Empty results"

    bazel query //ignoreme/deep/... --universe_scope=//ignoreme/deep/... \
        --order_output=no >& "$TEST_log" || fail "Expected success"
    expect_log "WARNING: Pattern '//ignoreme/deep/...' was filtered out by ignored directory 'ignoreme'"
    expect_not_log "circular symlinks detected"
    expect_not_log "ignoreme/deep/deeper"
    expect_log "Empty results"

    # Test patterns with exclude.
    bazel build -- //ignoreme/deep/... -//ignoreme/... >& "$TEST_log" \
        || fail "Expected success"
    expect_not_log "circular symlinks detected"
    expect_not_log "ignoreme/deep/deeper"

    bazel build -- //ignoreme/... -//ignoreme/deep/... >& "$TEST_log" \
        || fail "Expected success"
    expect_log "WARNING: Pattern '//ignoreme/...' was filtered out by ignored directory 'ignoreme'"
    expect_not_log "circular symlinks detected"
    expect_not_log "ignoreme/deep/deeper"
}

test_symlink_cycle_ignored() {
    rm -rf work && mkdir work && cd work
    create_workspace_with_default_repos WORKSPACE
    mkdir -p ignoreme/deep
    (cd ignoreme/deep && ln -s . loop)
    touch BUILD

    # This should really fail, but it does not:
    # https://github.com/bazelbuild/bazel/issues/12148
    bazel build ... >& $TEST_log || fail "Expected success"
    expect_log "Infinite symlink expansion"

    echo; echo
    echo ignoreme > .bazelignore
    bazel build ... >& $TEST_log || fail "Expected success"
    expect_not_log "Infinite symlink expansion"
}

test_build_specific_target() {
    rm -rf work && mkdir work && cd work
    create_workspace_with_default_repos WORKSPACE
    mkdir -p ignoreme
    echo Not a valid BUILD file > ignoreme/BUILD
    mkdir -p foo/bar
    cat > foo/bar/BUILD <<'EOI'
genrule(
  name = "out",
  outs = ["out.txt"],
  cmd = "echo Hello World > $@",
)
EOI
    echo ignoreme > .bazelignore
    bazel build //foo/bar/... || fail "Could not build valid target"
}

test_aquery_specific_target() {
    rm -rf work && mkdir work && cd work
    create_workspace_with_default_repos WORKSPACE
    mkdir -p foo/ignoreme
    cat > foo/ignoreme/BUILD <<'EOI'
genrule(
  name = "ignoreme",
  outs = ["ignore.txt"],
  cmd = "echo Hello World > $@",
)
EOI
    mkdir -p foo
    cat > foo/BUILD <<'EOI'
genrule(
  name = "out",
  outs = ["out.txt"],
  cmd = "echo Hello World > $@",
)
EOI
    bazel aquery ... > output 2> "$TEST_log" \
        || fail "Aquery should complete without error."
    cat output >> "$TEST_log"
    assert_contains "ignoreme" output

    echo foo/ignoreme > .bazelignore
    bazel aquery ... > output 2> "$TEST_log" \
        || fail "Aquery should complete without error."
    cat output >> "$TEST_log"
    assert_not_contains "ignoreme" output
}

run_suite "Integration tests for .bazelignore"