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https://github.com/lukaszraczylo/filepuff-mcp.git
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lukaszraczylo
ff37be1f17
We advertise textDocument.definition.linkSupport=true, so gopls and rust-analyzer return the LocationLink shape (targetUri/targetRange). The old code only tried []Location then a single Location; unmarshaling LocationLink JSON into []Location silently succeeds with zero-value URIs/ranges, producing garbage locations (or a false 'No definition found'). parseDefinitionResult now decodes a unified shape capturing both field sets and normalizes to Location, and surfaces a real parse error instead of swallowing it. Adds TestParseDefinitionResult covering all shapes.
79 lines
2.5 KiB
Go
79 lines
2.5 KiB
Go
package lsp
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import (
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"encoding/json"
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"testing"
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)
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// TestParseDefinitionResult covers every LSP definition result shape: single
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// Location, Location[], single LocationLink, LocationLink[], plus empty/error
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// cases. The LocationLink shapes are the regression target — we advertise
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// LinkSupport, so gopls/rust-analyzer return targetUri/targetRange, which a
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// naive []Location unmarshal would silently turn into zero-value locations.
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func TestParseDefinitionResult(t *testing.T) {
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tests := []struct {
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name string
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raw string
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wantURIs []string
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wantErr bool
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}{
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{
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name: "single Location",
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raw: `{"uri":"file:///a.go","range":{"start":{"line":4,"character":2},"end":{"line":4,"character":8}}}`,
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wantURIs: []string{"file:///a.go"},
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},
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{
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name: "Location array",
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raw: `[{"uri":"file:///a.go","range":{"start":{"line":1,"character":0},"end":{"line":1,"character":3}}},{"uri":"file:///b.go","range":{"start":{"line":2,"character":0},"end":{"line":2,"character":3}}}]`,
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wantURIs: []string{"file:///a.go", "file:///b.go"},
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},
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{
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name: "single LocationLink",
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raw: `{"targetUri":"file:///c.go","targetRange":{"start":{"line":9,"character":0},"end":{"line":12,"character":1}}}`,
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wantURIs: []string{"file:///c.go"},
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},
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{
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name: "LocationLink array",
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raw: `[{"targetUri":"file:///d.go","targetRange":{"start":{"line":0,"character":0},"end":{"line":0,"character":5}}}]`,
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wantURIs: []string{"file:///d.go"},
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},
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{
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name: "empty array",
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raw: `[]`,
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wantURIs: []string{},
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},
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{
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name: "garbage",
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raw: `"not-a-location"`,
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wantErr: true,
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},
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}
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for _, tt := range tests {
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t.Run(tt.name, func(t *testing.T) {
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locs, err := parseDefinitionResult(json.RawMessage(tt.raw))
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if tt.wantErr {
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if err == nil {
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t.Fatalf("expected error, got locations %+v", locs)
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}
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return
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}
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if err != nil {
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t.Fatalf("unexpected error: %v", err)
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}
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if len(locs) != len(tt.wantURIs) {
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t.Fatalf("got %d locations, want %d (%+v)", len(locs), len(tt.wantURIs), locs)
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}
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for i, want := range tt.wantURIs {
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if locs[i].URI != want {
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t.Errorf("location[%d].URI = %q, want %q", i, locs[i].URI, want)
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}
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}
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// LocationLink ranges must be carried over, not zeroed.
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if tt.name == "single LocationLink" && locs[0].Range.Start.Line != 9 {
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t.Errorf("LocationLink targetRange not preserved: got start line %d, want 9", locs[0].Range.Start.Line)
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}
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})
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}
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}
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