tests/thirdparty: package metadata (#223)

Fetches third-party package metadata from Github.

internal/github/client_test.go

@@ -0,0 +1,27 @@
+package github
+
+import (
+	"context"
+	"encoding/json"
+	"net/http"
+	"testing"
+
+	"github.com/mmcloughlin/avo/internal/test"
+)
+
+func TestClientRepository(t *testing.T) {
+	test.RequiresNetwork(t)
+
+	ctx := context.Background()
+	g := NewClient(WithHTTPClient(http.DefaultClient), WithTokenFromEnvironment())
+	r, err := g.Repository(ctx, "golang", "go")
+	if err != nil {
+		t.Fatal(err)
+	}
+
+	j, err := json.MarshalIndent(r, "", "\t")
+	if err != nil {
+		t.Fatal(err)
+	}
+	t.Logf("repository = %s", j)
+}