use test instead of examples for ci

Author: raksly

.travis.yml

@@ -1,8 +1,5 @@
-language: go
-go:
-  - 1.7.x
-  - 1.8.x
-  - 1.9.x
-script:
-  - go run $GOPATH/src/github.com/raksly/runner/examples/minimalistic/main.go
-  - go run $GOPATH/src/github.com/raksly/runner/examples/exit_notification/main.go
+language: go
+go:
+  - 1.7.x
+  - 1.8.x
+  - 1.9.x

runner_test.go

@@ -0,0 +1,69 @@
+package runner_test
+
+import (
+	"context"
+	"reflect"
+	"syscall"
+	"testing"
+	"time"
+
+	"github.com/raksly/runner"
+	"github.com/stretchr/testify/assert"
+)
+
+func run() {
+	time.Sleep(time.Second)
+}
+
+func runContext(ctx context.Context) {
+	<-ctx.Done()
+}
+
+func assertChan(assert *assert.Assertions, c interface{}, expectClosed bool) {
+	if expectClosed {
+		_, ok := reflect.ValueOf(c).Recv()
+		assert.False(ok)
+	} else {
+		chosen, _, _ := reflect.Select([]reflect.SelectCase{
+			reflect.SelectCase{Dir: reflect.SelectDefault},
+			reflect.SelectCase{Dir: reflect.SelectRecv, Chan: reflect.ValueOf(c)},
+		})
+		assert.Equal(0, chosen)
+	}
+}
+
+func Test1(t *testing.T) {
+	assert := assert.New(t)
+
+	ctx, cancel := context.WithCancel(context.Background())
+	runner := runner.New(ctx)
+
+	assert.Equal(ctx, runner.Context())
+
+	c1 := runner.Run(run)
+	c2 := runner.RunContext(runContext)
+	c3 := runner.RunOtherContext(ctx, runContext)
+	c4 := runner.RunSigs(syscall.SIGINT)
+
+	select {
+	case <-c1:
+	case <-c2:
+		assert.Fail("should not run")
+	case <-c3:
+		assert.Fail("should not run")
+	case <-c4:
+		assert.Fail("should not run")
+	}
+
+	assertChan(assert, c1, true)
+	assertChan(assert, c2, false)
+	assertChan(assert, c3, false)
+	assertChan(assert, c4, false)
+
+	cancel()
+	runner.Wait()
+
+	assertChan(assert, c2, true)
+	assertChan(assert, c3, true)
+	assertChan(assert, c4, false)
+}