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StateTimeline: insert terminating null value for 1-datapoint frames (#47240)
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@ -112,6 +112,22 @@ describe('nullInsertThreshold Transformer', () => {
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expect(result.fields[0].values.toArray()).toStrictEqual([1, 2, 3, 4, 10, 11]);
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expect(result.fields[1].values.toArray()).toStrictEqual([4, null, 6, null, 8, null]);
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expect(result.fields[2].values.toArray()).toStrictEqual(['a', null, 'b', null, 'c', null]);
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// should work for frames with 1 datapoint
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const df2 = new MutableDataFrame({
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refId: 'A',
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fields: [
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{ name: 'Time', type: FieldType.time, config: { interval: 1 }, values: [1] },
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{ name: 'One', type: FieldType.number, values: [1] },
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{ name: 'Two', type: FieldType.string, values: ['a'] },
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],
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});
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const result2 = applyNullInsertThreshold(df2, null, 13);
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expect(result2.fields[0].values.toArray()).toStrictEqual([1, 2]);
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expect(result2.fields[1].values.toArray()).toStrictEqual([1, null]);
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expect(result2.fields[2].values.toArray()).toStrictEqual(['a', null]);
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});
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// TODO: make this work
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@ -132,12 +148,12 @@ describe('nullInsertThreshold Transformer', () => {
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expect(result.fields[2].values.toArray()).toStrictEqual(['a', null, 'b', null, 'c']);
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});
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test('should noop on fewer than two values', () => {
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test('should noop on 0 datapoints', () => {
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const df = new MutableDataFrame({
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refId: 'A',
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fields: [
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{ name: 'Time', type: FieldType.time, config: { interval: 1 }, values: [1] },
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{ name: 'Value', type: FieldType.number, values: [1] },
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{ name: 'Time', type: FieldType.time, config: { interval: 1 }, values: [] },
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{ name: 'Value', type: FieldType.number, values: [] },
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],
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});
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@ -15,7 +15,7 @@ export function applyNullInsertThreshold(
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refFieldPseudoMax: number | null = null,
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insertMode: InsertMode = INSERT_MODES.threshold
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): DataFrame {
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if (frame.length < 2) {
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if (frame.length === 0) {
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return frame;
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}
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