[bugfix] Handle ErrHideStatus when preparing timeline statuses (#3071)

internal/processing/timeline/public_test.go

@@ -22,6 +22,10 @@ import (
 	"testing"
 
 	"github.com/stretchr/testify/suite"
+	apimodel "github.com/superseriousbusiness/gotosocial/internal/api/model"
+	"github.com/superseriousbusiness/gotosocial/internal/gtsmodel"
+	"github.com/superseriousbusiness/gotosocial/internal/id"
+	"github.com/superseriousbusiness/gotosocial/internal/util"
 )
 
 type PublicTestSuite struct {
@@ -91,6 +95,93 @@ func (suite *PublicTestSuite) TestPublicTimelineGetNotEmpty() {
 	suite.Equal(`http://localhost:8080/api/v1/timelines/public?limit=1&min_id=01HE7XJ1CG84TBKH5V9XKBVGF5&local=false`, resp.PrevLink)
 }
 
+// A timeline containing a status hidden due to filtering should return other statuses with no error.
+func (suite *PublicTestSuite) TestPublicTimelineGetHideFiltered() {
+	var (
+		ctx                 = context.Background()
+		requester           = suite.testAccounts["local_account_1"]
+		maxID               = ""
+		sinceID             = ""
+		minID               = "01F8MHAAY43M6RJ473VQFCVH36" // 1 before filteredStatus
+		limit               = 10
+		local               = false
+		filteredStatus      = suite.testStatuses["admin_account_status_2"]
+		filteredStatusFound = false
+		filterID            = id.NewULID()
+		filter              = &gtsmodel.Filter{
+			ID:        filterID,
+			AccountID: requester.ID,
+			Title:     "timeline filtering test",
+			Action:    gtsmodel.FilterActionHide,
+			Statuses: []*gtsmodel.FilterStatus{
+				{
+					ID:        id.NewULID(),
+					AccountID: requester.ID,
+					FilterID:  filterID,
+					StatusID:  filteredStatus.ID,
+				},
+			},
+			ContextHome:          util.Ptr(false),
+			ContextNotifications: util.Ptr(false),
+			ContextPublic:        util.Ptr(true),
+			ContextThread:        util.Ptr(false),
+			ContextAccount:       util.Ptr(false),
+		}
+	)
+
+	// Fetch the timeline to make sure the status we're going to filter is in that section of it.
+	resp, errWithCode := suite.timeline.PublicTimelineGet(
+		ctx,
+		requester,
+		maxID,
+		sinceID,
+		minID,
+		limit,
+		local,
+	)
+	suite.NoError(errWithCode)
+	for _, item := range resp.Items {
+		if item.(*apimodel.Status).ID == filteredStatus.ID {
+			filteredStatusFound = true
+			break
+		}
+	}
+	if !filteredStatusFound {
+		suite.FailNow("precondition failed: status we would filter isn't present in unfiltered timeline")
+	}
+	// The public timeline has no prepared status cache and doesn't need to be pruned,
+	// as in the home timeline version of this test.
+
+	// Create a filter to hide one status on the timeline.
+	if err := suite.db.PutFilter(ctx, filter); err != nil {
+		suite.FailNow(err.Error())
+	}
+
+	// Fetch the timeline again with the filter in place.
+	resp, errWithCode = suite.timeline.PublicTimelineGet(
+		ctx,
+		requester,
+		maxID,
+		sinceID,
+		minID,
+		limit,
+		local,
+	)
+
+	// We should have some statuses even though one status was filtered out.
+	suite.NoError(errWithCode)
+	suite.NotEmpty(resp.Items)
+	// The filtered status should not be there.
+	filteredStatusFound = false
+	for _, item := range resp.Items {
+		if item.(*apimodel.Status).ID == filteredStatus.ID {
+			filteredStatusFound = true
+			break
+		}
+	}
+	suite.False(filteredStatusFound)
+}
+
 func TestPublicTestSuite(t *testing.T) {
 	suite.Run(t, new(PublicTestSuite))
 }