5f2291849d
- Cover typed Publish/Lookup, duplicate providers and HasPlugin - Require missing/cycle errors to name plugin IDs before Boot - Assert greeter works with and without an optional extra
73 lines
1.6 KiB
Go
73 lines
1.6 KiB
Go
package backpack
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import (
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"testing"
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"git.golem15.com/golem15/summercms/compass"
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)
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type ping interface {
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Ping() string
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}
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type pingImpl struct{ s string }
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func (p pingImpl) Ping() string { return p.s }
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func TestPublishLookup(t *testing.T) {
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app := New(&compass.Config{})
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if err := app.Publish[ping](pingImpl{s: "pong"}); err != nil {
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t.Fatalf("Publish: %v", err)
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}
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got, ok := app.Lookup[ping]()
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if !ok {
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t.Fatal("Lookup returned false")
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}
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if got.Ping() != "pong" {
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t.Fatalf("Ping = %q, want pong", got.Ping())
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}
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}
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func TestLookupAbsentInterface(t *testing.T) {
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app := New(&compass.Config{})
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got, ok := app.Lookup[ping]()
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if ok {
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t.Fatalf("Lookup = (%v, true), want false", got)
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}
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if got != nil {
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t.Fatalf("absent lookup value = %v, want nil", got)
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}
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}
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func TestPublishDuplicateRejected(t *testing.T) {
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app := New(&compass.Config{})
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if err := app.Publish[ping](pingImpl{s: "a"}); err != nil {
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t.Fatalf("Publish: %v", err)
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}
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if err := app.Publish[ping](pingImpl{s: "b"}); err == nil {
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t.Fatal("expected duplicate publish error")
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}
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}
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func TestServiceRegistriesAreAppScoped(t *testing.T) {
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a := New(&compass.Config{})
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b := New(&compass.Config{})
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if err := a.Publish[ping](pingImpl{s: "a"}); err != nil {
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t.Fatal(err)
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}
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if _, ok := b.Lookup[ping](); ok {
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t.Fatal("app B should not see app A's service")
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}
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}
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func TestHasPluginUsesCompleteSet(t *testing.T) {
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app := New(&compass.Config{})
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app.SetPlugins([]string{"golem15.hello", "golem15.optional"})
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if !app.HasPlugin("golem15.optional") {
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t.Fatal("HasPlugin(golem15.optional) = false")
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}
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if app.HasPlugin("golem15.missing") {
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t.Fatal("HasPlugin(golem15.missing) = true")
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}
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}
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