mirror of https://github.com/knative/func.git
107 lines
2.8 KiB
Go
107 lines
2.8 KiB
Go
package cmd
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import (
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"context"
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"errors"
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"fmt"
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"net"
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"net/http"
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"os"
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"sync/atomic"
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"testing"
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fn "knative.dev/func/pkg/functions"
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"knative.dev/func/pkg/mock"
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)
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// TestInvoke command executes the invocation path.
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func TestInvoke(t *testing.T) {
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root := fromTempDirectory(t)
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var invoked int32
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// Create a test function to be invoked
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if _, err := fn.New().Init(fn.Function{Runtime: "go", Root: root}); err != nil {
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t.Fatal(err)
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}
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// Mock Runner
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// Starts a service which sets invoked=1 on any request
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runner := mock.NewRunner()
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runner.RunFn = func(ctx context.Context, f fn.Function) (job *fn.Job, err error) {
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var (
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l net.Listener
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h = http.NewServeMux()
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s = http.Server{Handler: h}
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)
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if l, err = net.Listen("tcp4", "127.0.0.1:"); err != nil {
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t.Fatal(err)
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}
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h.HandleFunc("/", func(res http.ResponseWriter, req *http.Request) {
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atomic.StoreInt32(&invoked, 1)
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_, _ = res.Write([]byte("invoked"))
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})
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go func() {
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if err = s.Serve(l); err != nil && !errors.Is(err, http.ErrServerClosed) {
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fmt.Fprintf(os.Stderr, "error serving: %v", err)
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}
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}()
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_, port, _ := net.SplitHostPort(l.Addr().String())
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errs := make(chan error, 10)
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stop := func() error { _ = s.Close(); return nil }
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return fn.NewJob(f, "127.0.0.1", port, errs, stop, false)
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}
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// Run the mock http service function interloper
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f, err := fn.NewFunction(root)
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if err != nil {
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t.Fatal(err)
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}
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client := fn.New(fn.WithRunner(runner))
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job, err := client.Run(context.Background(), f)
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if err != nil {
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t.Fatal(err)
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}
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t.Cleanup(func() { _ = job.Stop() })
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// Test that the invoke command invokes
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cmd := NewInvokeCmd(NewClient)
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cmd.SetArgs([]string{})
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if err := cmd.Execute(); err != nil {
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t.Fatal(err)
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}
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if atomic.LoadInt32(&invoked) != 1 {
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t.Fatal("function was not invoked")
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}
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}
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// TestInvoke_Namespace ensures that invocation uses the Function's namespace
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// despite the currently active.
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func TestInvoke_Namespace(t *testing.T) {
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root := fromTempDirectory(t)
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// Create a Function in a non-active namespace
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f := fn.Function{Runtime: "go", Root: root, Deploy: fn.DeploySpec{Namespace: "ns"}}
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_, err := fn.New().Init(f)
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if err != nil {
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t.Fatal(err)
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}
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// The shared Client constructor should receive the current function's
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// namespace when constructing its describer (used when finding the
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// function's route), not the currently active namespace.
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namespace := ""
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newClient := func(conf ClientConfig, opts ...fn.Option) (*fn.Client, func()) {
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namespace = conf.Namespace // should be set to that of the function
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return NewClient(conf, opts...)
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}
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cmd := NewInvokeCmd(newClient)
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_ = cmd.Execute() // invocation error expected
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if namespace != "ns" {
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t.Fatalf("expected client to receive function's current namespace 'ns', got '%v'", namespace)
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}
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}
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