loader revisited

client/background_test.go

@@ -0,0 +1,39 @@
+package client
+
+import (
+	"errors"
+	"testing"
+
+	gerr "galaxy/error"
+	"github.com/stretchr/testify/require"
+)
+
+func TestHandlerErrorDispatchesByClass(t *testing.T) {
+	t.Parallel()
+
+	tests := []struct {
+		name      string
+		err       error
+		wantEvent string
+	}{
+		{name: "connection", err: gerr.WrapConnection(errors.New("dial")), wantEvent: "connection"},
+		{name: "storage", err: gerr.WrapStorage(errors.New("write file")), wantEvent: "storage"},
+		{name: "service", err: gerr.WrapService(errors.New("bad response")), wantEvent: "service"},
+		{name: "unclassified defaults to service", err: errors.New("plain"), wantEvent: "service"},
+	}
+
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			var got string
+			c := &client{
+				onConnectionErrFn: func(error) { got = "connection" },
+				onStorageErrFn:    func(error) { got = "storage" },
+				onServiceErrFn:    func(error) { got = "service" },
+			}
+
+			c.handlerError(tt.err)
+
+			require.Equal(t, tt.wantEvent, got)
+		})
+	}
+}