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https://github.com/truewhile/MeBox.git
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soldosluka857
b2ccd04844
The DLNA device list endpoint could return {"devices":null} in two cases:
the SSDP-failure path returned a nil slice, and the cached path copied an
empty cache via append([]DLNADevice(nil), cache...) which also yields nil.
The web UI reads res.devices.length, so a null devices field crashed the
DLNA page to a white screen. Return non-nil slices in both paths and guard
the frontend with a null coalesce. Adds a regression test.
Co-Authored-By: Devin AI <158243242+devin-ai-integration[bot]@users.noreply.github.com>
38 lines
1.1 KiB
Go
38 lines
1.1 KiB
Go
package service
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import (
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"context"
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"encoding/json"
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"testing"
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"time"
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"go.uber.org/zap"
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)
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// TestDLNADiscoverCachedEmptyReturnsNonNil guards against the bug where an
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// empty device cache was copied via append([]DLNADevice(nil), cache...),
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// which yields a nil slice and serializes to JSON null. The web UI reads
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// res.devices.length, so a null devices field crashed the DLNA page.
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func TestDLNADiscoverCachedEmptyReturnsNonNil(t *testing.T) {
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d := NewDLNAService(zap.NewNop())
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// Prime the cache with an empty (but non-nil) result, fresh enough to be served.
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d.cache = []DLNADevice{}
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d.cachedAt = time.Now()
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out, err := d.Discover(context.Background(), false)
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if err != nil {
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t.Fatalf("Discover returned error: %v", err)
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}
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if out == nil {
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t.Fatal("Discover returned nil slice for empty cache; want non-nil so JSON is [] not null")
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}
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b, err := json.Marshal(map[string]any{"devices": out})
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if err != nil {
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t.Fatalf("marshal: %v", err)
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}
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if got := string(b); got != `{"devices":[]}` {
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t.Fatalf("devices serialized as %s; want {\"devices\":[]}", got)
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}
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}
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