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data_frame_from_raw_data_test.dart
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data_frame_from_raw_data_test.dart
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import 'package:ml_dataframe/src/data_frame/data_frame.dart';
import 'package:test/test.dart';
void main() {
group('DataFrame', () {
test('should initialize from dynamic-typed data without header row', () {
final data = [
[ 1, 2, 3, true, '32'],
[ 10, 12, 323, false, '1132'],
[-10, 202, null, true, 'abs'],
];
final frame = DataFrame(
data,
headerExists: false,
);
expect(frame.header,
equals(['col_0', 'col_1', 'col_2', 'col_3', 'col_4']));
expect(frame.rows, equals([
[ 1, 2, 3, true, '32'],
[ 10, 12, 323, false, '1132'],
[-10, 202, null, true, 'abs'],
]));
expect(frame.series.map((series) => series.name),
equals(['col_0', 'col_1', 'col_2', 'col_3', 'col_4']));
expect(frame.series.map((series) => series.data), equals([
[1, 10, -10],
[2, 12, 202],
[3, 323, null],
[true, false, true],
['32', '1132', 'abs'],
]));
});
test('should initialize from dynamic-typed data with header row', () {
final data = [
['header_1', 'header_2', 'header_3', 'header_4', 'header_5'],
[ 1, 2, 3, true, '32'],
[ 10, 12, 323, false, '1132'],
[ -10, 202, null, true, 'abs'],
];
final frame = DataFrame(data, headerExists: true);
expect(frame.header,
equals(['header_1', 'header_2', 'header_3', 'header_4', 'header_5']));
expect(frame.rows, equals([
[ 1, 2, 3, true, '32'],
[ 10, 12, 323, false, '1132'],
[-10, 202, null, true, 'abs'],
]));
expect(frame.series.map((series) => series.name),
equals(['header_1', 'header_2', 'header_3', 'header_4', 'header_5']));
expect(frame.series.map((series) => series.data), equals([
[1, 10, -10],
[2, 12, 202],
[3, 323, null],
[true, false, true],
['32', '1132', 'abs'],
]));
});
test('should initialize from dynamic-typed data without header row using '
'predefined header', () {
final data = [
[ 1, 2, 3, true, '32'],
[ 10, 12, 323, false, '1132'],
[ -10, 202, null, true, 'abs'],
];
final frame = DataFrame(data,
header: ['first', 'second', 'third', 'fourth', 'fifth'],
headerExists: false,
);
expect(frame.header,
equals(['first', 'second', 'third', 'fourth', 'fifth']));
expect(frame.rows, equals([
[ 1, 2, 3, true, '32'],
[ 10, 12, 323, false, '1132'],
[-10, 202, null, true, 'abs'],
]));
expect(frame.series.map((series) => series.name),
equals(['first', 'second', 'third', 'fourth', 'fifth']));
expect(frame.series.map((series) => series.data), equals([
[1, 10, -10],
[2, 12, 202],
[3, 323, null],
[true, false, true],
['32', '1132', 'abs'],
]));
});
test('should use predefined header while initializng even if source data '
'has header row', () {
final data = [
['header_1', 'header_2', 'header_3', 'header_4', 'header_5'],
[ 1, 2, 3, true, '32'],
[ 10, 12, 323, false, '1132'],
[ -10, 202, null, true, 'abs'],
];
final frame = DataFrame(data,
header: ['first', 'second', 'third', 'fourth', 'fifth'],
headerExists: true
);
expect(frame.header,
equals(['first', 'second', 'third', 'fourth', 'fifth']));
expect(frame.rows, equals([
[ 1, 2, 3, true, '32'],
[ 10, 12, 323, false, '1132'],
[-10, 202, null, true, 'abs'],
]));
expect(frame.series.map((series) => series.name),
equals(['first', 'second', 'third', 'fourth', 'fifth']));
expect(frame.series.map((series) => series.data), equals([
[1, 10, -10],
[2, 12, 202],
[3, 323, null],
[true, false, true],
['32', '1132', 'abs'],
]));
});
test('should select columns from source data by their indices', () {
final data = [
['col_1', 'col_2', 'col_3', 'col_4', 'col_5'],
[ 1, 2, 3, true, '32'],
[ 10, 12, 323, false, '1132'],
[ -10, 202, null, true, 'abs'],
];
final frame = DataFrame(data, headerExists: true, columns: [0, 2, 4]);
expect(frame.header, equals(['col_1', 'col_3', 'col_5']));
expect(frame.rows, equals([
[ 1, 3, '32'],
[ 10, 323, '1132'],
[-10, null, 'abs'],
]));
expect(frame.series.map((series) => series.name),
equals(['col_1', 'col_3', 'col_5']));
expect(frame.series.map((series) => series.data), equals([
[1, 10, -10],
[3, 323, null],
['32', '1132', 'abs'],
]));
});
test('should select columns from source data by their names', () {
final data = [
['col_1', 'col_2', 'col_3', 'col_4', 'col_5'],
[ 1, 2, 3, true, '32'],
[ 10, 12, 323, false, '1132'],
[ -10, 202, null, true, 'abs'],
];
final frame = DataFrame(data, headerExists: true,
columnNames: ['col_1', 'col_3', 'col_5']);
expect(frame.header,
equals(['col_1', 'col_3', 'col_5']));
expect(frame.rows, equals([
[ 1, 3, '32'],
[ 10, 323, '1132'],
[-10, null, 'abs'],
]));
expect(frame.series.map((series) => series.name),
equals(['col_1', 'col_3', 'col_5']));
expect(frame.series.map((series) => series.data), equals([
[1, 10, -10],
[3, 323, null],
['32', '1132', 'abs'],
]));
});
test('should consider predefined header while initializing if there are '
'columns to select from source data', () {
final data = [
[ 1, 2, 3, true, '32'],
[ 10, 12, 323, false, '1132'],
[ -10, 202, null, true, 'abs'],
];
final frame = DataFrame(data,
header: ['first', 'second', 'third', 'fourth', 'fifth'],
columns: [0, 2, 4],
headerExists: false,
);
expect(frame.header, equals(['first', 'second', 'third']));
expect(frame.rows, equals([
[ 1, 3, '32'],
[ 10, 323, '1132'],
[-10, null, 'abs'],
]));
expect(frame.series.map((series) => series.name),
equals(['first', 'second', 'third']));
expect(frame.series.map((series) => series.data), equals([
[1, 10, -10],
[3, 323, null],
['32', '1132', 'abs'],
]));
});
});
}