1d339653d5
- Add VariableSpec class with magnitude field validation - Add Formula class supporting multiple input/output variables - Support d4rt_code as string or object with code field - Add comprehensive tests for parsing and serialization - Fix broken test import in pruebas_d4rt_test.dart Follows README.md format requirements exactly
74 lines
2.1 KiB
Dart
74 lines
2.1 KiB
Dart
import 'dart:convert';
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import 'package:test/test.dart';
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import 'package:d4rt_formulas/formula_models.dart';
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void main() {
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group('Formula models', () {
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test('parses a formula with multiple input variables', () {
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const jsonStr = '''
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{
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"name": "Newton's second law (scalar)",
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"input": {
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"m": {"magnitude": "mass"},
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"a": {"magnitude": "acceleration"}
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},
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"output": {
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"F": {"magnitude": "Force"}
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},
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"d4rt_code": {"code": "return m*a;"}
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}
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''';
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final map = jsonDecode(jsonStr) as Map<String, dynamic>;
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final f = Formula.fromJson(map);
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expect(f.name, "Newton's second law (scalar)");
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expect(f.input.length, 2);
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expect(f.input['m']!.magnitude, 'mass');
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expect(f.input['a']!.magnitude, 'acceleration');
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expect(f.output.length, 1);
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expect(f.output['F']!.magnitude, 'Force');
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expect(f.d4rtCode, 'return m*a;');
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final back = f.toJson();
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expect(back['name'], f.name);
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expect((back['input'] as Map)['m']['magnitude'], 'mass');
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expect((back['input'] as Map)['a']['magnitude'], 'acceleration');
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expect((back['output'] as Map)['F']['magnitude'], 'Force');
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expect((back['d4rt_code'] as Map)['code'], 'return m*a;');
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});
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test('rejects typo magitude (must be magnitude)', () {
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const badJson = '''
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{
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"name": "Bad formula",
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"input": {
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"x": {"magitude": "oops"}
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},
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"output": {
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"y": {"magnitude": "ok"}
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},
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"d4rt_code": "return x;"
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}
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''';
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final map = jsonDecode(badJson) as Map<String, dynamic>;
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expect(() => Formula.fromJson(map), throwsFormatException);
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});
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test('accepts d4rt_code as a plain string', () {
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const jsonStr = '''
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{
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"name": "Simple",
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"input": {"x": {"magnitude": "scalar"}},
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"output": {"y": {"magnitude": "scalar"}},
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"d4rt_code": "return x;"
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}
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''';
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final map = jsonDecode(jsonStr) as Map<String, dynamic>;
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final f = Formula.fromJson(map);
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expect(f.d4rtCode, 'return x;');
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});
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});
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}
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