test(functions): add text, logical and lookup tests

2026-08-28 13:33:00 +02:00
1 parent c31cea00f7
commit 5ba21bc427
@@ -0,0 +1,93 @@
+import 'package:cellar/cellar.dart';
+import 'package:test/test.dart';
+
+double num(CellValue value) => (value as NumberValue).value;
+
+Sheet lookupSheet() {
+  final sheet = Sheet();
+  final rows = [
+    ['apple', '1', 'red'],
+    ['banana', '2', 'yellow'],
+    ['cherry', '3', 'red'],
+  ];
+  for (var r = 0; r < rows.length; r++) {
+    sheet.setValue('A${r + 1}', rows[r][0]);
+    sheet.setValue('B${r + 1}', rows[r][1]);
+    sheet.setValue('C${r + 1}', rows[r][2]);
+  }
+  return sheet;
+}
+
+void main() {
+  group('lookup functions', () {
+    test('VLOOKUP exact match returns another column', () {
+      final sheet = lookupSheet();
+      sheet.setValue('E1', '=VLOOKUP("banana", A1:C3, 3, FALSE)');
+      expect(sheet.valueOf('E1'), const TextValue('yellow'));
+    });
+
+    test('VLOOKUP approximate on sorted numbers', () {
+      final sheet = Sheet();
+      sheet.setValue('A1', '0');
+      sheet.setValue('B1', 'low');
+      sheet.setValue('A2', '10');
+      sheet.setValue('B2', 'mid');
+      sheet.setValue('A3', '20');
+      sheet.setValue('B3', 'high');
+      sheet.setValue('D1', '=VLOOKUP(15, A1:B3, 2)');
+      expect(sheet.valueOf('D1'), const TextValue('mid'));
+    });
+
+    test('VLOOKUP missing exact key is #N/A', () {
+      final sheet = lookupSheet();
+      sheet.setValue('E1', '=VLOOKUP("mango", A1:C3, 2, FALSE)');
+      expect(sheet.valueOf('E1'), const ErrorValue(ErrorKind.na));
+    });
+
+    test('HLOOKUP across a row', () {
+      final sheet = Sheet();
+      sheet.setValue('A1', 'Q1');
+      sheet.setValue('B1', 'Q2');
+      sheet.setValue('C1', 'Q3');
+      sheet.setValue('A2', '10');
+      sheet.setValue('B2', '20');
+      sheet.setValue('C2', '30');
+      sheet.setValue('E1', '=HLOOKUP("Q2", A1:C2, 2, FALSE)');
+      expect(num(sheet.valueOf('E1')), 20);
+    });
+
+    test('MATCH exact and approximate', () {
+      final sheet = lookupSheet();
+      sheet.setValue('E1', '=MATCH("cherry", A1:A3, 0)');
+      expect(num(sheet.valueOf('E1')), 3);
+      final numbers = Sheet();
+      numbers.setValue('A1', '10');
+      numbers.setValue('A2', '20');
+      numbers.setValue('A3', '30');
+      numbers.setValue('B1', '=MATCH(25, A1:A3, 1)');
+      expect(num(numbers.valueOf('B1')), 2);
+    });
+
+    test('INDEX and INDEX/MATCH', () {
+      final sheet = lookupSheet();
+      sheet.setValue('E1', '=INDEX(A1:C3, 2, 3)');
+      sheet.setValue('E2', '=INDEX(B1:B3, MATCH("cherry", A1:A3, 0))');
+      expect(sheet.valueOf('E1'), const TextValue('yellow'));
+      expect(num(sheet.valueOf('E2')), 3);
+    });
+
+    test('CHOOSE ROWS COLUMNS ROW COLUMN', () {
+      final sheet = lookupSheet();
+      sheet.setValue('E1', '=CHOOSE(2, "a", "b", "c")');
+      sheet.setValue('E2', '=ROWS(A1:C3)');
+      sheet.setValue('E3', '=COLUMNS(A1:C3)');
+      sheet.setValue('E4', '=ROW(B5)');
+      sheet.setValue('E5', '=COLUMN(D2)');
+      expect(sheet.valueOf('E1'), const TextValue('b'));
+      expect(num(sheet.valueOf('E2')), 3);
+      expect(num(sheet.valueOf('E3')), 3);
+      expect(num(sheet.valueOf('E4')), 5);
+      expect(num(sheet.valueOf('E5')), 4);
+    });
+  });
+}