Beispiel #1
0
func Test_Run_creates_channel(t *testing.T) {
	var out chan Person
	junction.New(&out, nil)
	if out == nil {
		t.Error("Channel is nil")
	}
}
Beispiel #2
0
func Test_update_via_member_func_yields_updated_value(t *testing.T) {
	s := make(chan string)
	var out chan Person

	junction.New(&out, []junction.Source{{
		Input:  s,
		Update: (*Person).SetName,
		Model:  &Person{Name: "Jeff", Age: 56},
	}})

	s <- "Fishy Bob"

	person := <-out

	fb := Person{Age: 56, Name: "Fishy Bob"}
	if person != fb {
		t.Errorf("Where's Fishy Bob?")
	}
}
Beispiel #3
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func Test_update_via_non_member_func_yields_updated_value(t *testing.T) {
	i := make(chan int)
	var out chan Person

	junction.New(&out, []junction.Source{{
		Input:  i,
		Update: UpdatePersonAge,
		Model:  &Person{Name: "Jeff", Age: 56},
	}})

	i <- 57

	person := <-out

	older := Person{Age: 57, Name: "Jeff"}

	if person != older {
		t.Errorf("Expected %v but got %v", older, person)
	}
}
Beispiel #4
0
func Test_Model_lookup_function(t *testing.T) {
	people := People{
		123: &Person{Name: "Ann", Age: 23},
		456: &Person{Name: "Bob", Age: 21},
	}

	names := make(chan NameUpdate)
	ages := make(chan AgeUpdate)

	var out chan Person

	junction.New(&out, []junction.Source{
		{
			Input:  names,
			Update: ApplyNameUpdate,
			Model:  people.ById,
		},
		{
			Input:  ages,
			Update: ApplyAgeUpdate,
			Model:  people.ById,
		},
	})

	names <- NameUpdate{
		id:   123,
		name: "Anne",
	}

	anne := <-out

	if anne != (Person{Name: "Anne", Age: 23}) {
		t.Error("Name update failed")
	}

	ages <- AgeUpdate{id: 123}

	anne = <-out

	if anne.Age != 24 {
		t.Error("Age update failed")
	}
	if anne.Name != "Anne" {
		t.Error("Name update was lost")
	}

	ages <- AgeUpdate{id: 456}

	bob := <-out

	if bob != (Person{Name: "Bob", Age: 22}) {
		t.Error("Age update failed")
	}

	// check state
	if *people[123] != (Person{Name: "Anne", Age: 24}) {
		t.Errorf("Wrong value for Anne: %v", people[123])
	}
	if *people[456] != (Person{Name: "Bob", Age: 22}) {
		t.Errorf("Wrong value for Bob: %v", people[456])
	}
}