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// Copyright 2019 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 binary_coverage_test
import (
"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 = "hello",
srcs = ["hello.go"],
out = "hello",
)
-- hello.go --
package main
import "fmt"
func main() {
fmt.Println(A())
}
func A() int { return 12 }
func B() int { return 34 }
`,
})
}
func Test(t *testing.T) {
// Check that we can build a binary with coverage instrumentation enabled.
args := []string{
"build",
"--collect_code_coverage",
"--instrumentation_filter=.*",
"//:hello",
}
if err := bazel_testing.RunBazel(args...); err != nil {
t.Fatal(err)
}
// Check that we can build with `bazel coverage`. It will fail because
// there are no tests.
args = []string{
"coverage",
"//:hello",
}
if err := bazel_testing.RunBazel(args...); err == nil {
t.Fatal("got success; want failure")
} else if bErr, ok := err.(*bazel_testing.StderrExitError); !ok {
t.Fatalf("got %v; want StderrExitError", err)
} else if code := bErr.Err.ExitCode(); code != 4 {
t.Fatalf("got code %d; want code 4 (no tests found)", code)
}
}
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