03

Unit Tests

In this part, you will write a unit test for the Searcher component. Review the documentation on testing. Then, in a file called searcher_test.go, write a couple unit tests for the Search method.

• The query "pig" should return 🐖, 🐗, 🐷, and 🐽.
• The query "PiG" should return 🐖, 🐗, 🐷, and 🐽.
• The query "black cat" should return 🐈‍⬛.
• The query "foo bar baz" should return []string{}.

Make sure to run every unit test with all the Runners returned by weavertest.AllRunners.

Solution.

workshops/03/searcher_test.go

Lines 15 to 51 in 4eca79e

	package main
	import (
	"context"
	"fmt"
	"testing"
	"github.com/ServiceWeaver/weaver/weavertest"
	"github.com/google/go-cmp/cmp"
	)
	func TestSearch(t *testing.T) {
	type test struct {
	query string
	want []string
	}
	for _, test := range []test{
	{"pig", []string{"🐖", "🐗", "🐷", "🐽"}},
	{"PiG", []string{"🐖", "🐗", "🐷", "🐽"}},
	{"black cat", []string{"🐈\u200d⬛"}},
	{"foo bar baz", []string{}},
	} {
	for _, runner := range weavertest.AllRunners() {
	runner.Name = fmt.Sprintf("%s/%q", runner.Name, test.query)
	runner.Test(t, func(t *testing.T, searcher Searcher) {
	got, err := searcher.Search(context.Background(), test.query)
	if err != nil {
	t.Fatalf("Search: %v", err)
	}
	if diff := cmp.Diff(test.want, got); diff != "" {
	t.Fatalf("Search (-want,+got):\n%s", diff)
	}
	})
	}
	}
	}

Finally, run the unit tests with go test.

$ go test .
PASS
ok	emojis	0.491s

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