Function TestReaderGoLineToDingoLine

pkg/sourcemap/dmap/reader_test.go:230–269

(t *testing.T)

}

func TestReaderGoLineToDingoLine(t *testing.T) {
	dingoSrc := []byte("let x = 10\nlet y = 20\n")
	goSrc := []byte("x := 10\ny := 20\n")

	mappings := []sourcemap.LineMapping{
		{DingoLine: 1, GoLineStart: 1, GoLineEnd: 1, Kind: "identifier"},
		{DingoLine: 2, GoLineStart: 2, GoLineEnd: 2, Kind: "identifier"},
	}

	data := createTestDmap(t, dingoSrc, goSrc, mappings)
	reader, err := OpenBytes(data)
	if err != nil {
		t.Fatalf("OpenBytes failed: %v", err)
	}
	defer reader.Close()

	tests := []struct {
		name      string
		goLine    int
		wantDingo int
	}{
		{"line 1", 1, 1},
		{"line 2", 2, 2},
		// Line 0 is invalid (1-indexed), should clamp to first line
		{"unmapped line 0", 0, 1},
		// Line 100 is beyond file (3 lines), should clamp using proportional mapping
		{"unmapped line 100", 100, 3},
	}

	for _, tt := range tests {
		t.Run(tt.name, func(t *testing.T) {
			dingoLine, _ := reader.GoLineToDingoLine(tt.goLine)

			if dingoLine != tt.wantDingo {
				t.Errorf("GoLineToDingoLine(%d) = %d, want %d",
					tt.goLine, dingoLine, tt.wantDingo)
			}
		})
	}
}

func TestReaderMultipleKinds(t *testing.T) {
	dingoSrc := []byte("let x = 10\nmatch y { A => 1 }\n")