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// Copyright 2020 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.
package cmdline_test
import (
"bytes"
"testing"
"github.com/bazelbuild/rules_go/go/tools/bazel_testing"
)
func TestMain(m *testing.M) {
bazel_testing.TestMain(m, bazel_testing.Args{
Main: `
-- BUILD.bazel --
load("@io_bazel_rules_go//go:def.bzl", "go_binary")
go_binary(
name = "maybe_pure",
srcs = [
"not_pure.go",
"pure.go",
],
)
-- not_pure.go --
// +build cgo
package main
import "fmt"
func main() {
fmt.Println("not pure")
}
-- pure.go --
// +build !cgo
package main
import "fmt"
func main() {
fmt.Println("pure")
}
`,
})
}
// TestPure checks that the --@io_bazel_rules_go//go/config:pure flag controls
// whether a target is built in pure mode. It doesn't actually require cgo,
// since that doesn't work within go_bazel_test on Windows.
func TestPure(t *testing.T) {
out, err := bazel_testing.BazelOutput("run", "//:maybe_pure")
if err != nil {
t.Fatalf("running //:maybe_pure without flag: %v", err)
}
got := string(bytes.TrimSpace(out))
if want := "not pure"; got != want {
t.Fatalf("got %q; want %q", got, want)
}
out, err = bazel_testing.BazelOutput("run", "--@io_bazel_rules_go//go/config:pure", "//:maybe_pure")
if err != nil {
t.Fatalf("running //:maybe_pure with flag: %v", err)
}
got = string(bytes.TrimSpace(out))
if want := "pure"; got != want {
t.Fatalf("got %q; want %q", got, want)
}
}
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