Add unt tests for matchMode

Author: sequba

src/interpreter/plugin/LookupPlugin.ts

@@ -129,12 +129,6 @@ export class LookupPlugin extends FunctionPlugin implements FunctionPluginTypech
         return new CellError(ErrorType.VALUE, ErrorMessage.BadMode)
       }
 
-      if (matchMode !== 0) {
-        // not supported yet
-        // TODO: Implement match mode
-        return new CellError(ErrorType.VALUE, ErrorMessage.BadMode)
-      }
-
       const lookupRange = lookupRangeValue instanceof SimpleRangeValue ? lookupRangeValue : SimpleRangeValue.fromScalar(lookupRangeValue)
       const returnRange = returnRangeValue instanceof SimpleRangeValue ? returnRangeValue : SimpleRangeValue.fromScalar(returnRangeValue)
       const searchOptions: SearchOptions = {

test/interpreter/function-xlookup.spec.ts

@@ -502,6 +502,110 @@ describe('Function XLOOKUP', () => {
     })
   })
 
+  describe('with BinarySearch column search strategy, when provided with matchMode = ', () => {
+    describe('-1, returns a lower bound if the search key is not present', () => {
+      it('in unsorted horizontal range', () => {
+        const engine = HyperFormula.buildFromArray([
+          ['=XLOOKUP(3, A2:E2, A3:E3, "NotFound", -1, 1)'],
+          [2, 1, 4, 2, 5],
+          [1, 2, 3, 4, 5],
+        ], { useColumnIndex: false })
+
+        expect(engine.getCellValue(adr('A1'))).toEqual(1)
+      })
+
+      it('in unsorted vertical range', () => {
+        const engine = HyperFormula.buildFromArray([
+          ['=XLOOKUP(3, A2:A6, B2:B6, "NotFound", -1, 1)'],
+          [2, 1],
+          [1, 2],
+          [4, 3],
+          [2, 4],
+          [5, 5]
+        ], { useColumnIndex: false })
+
+        expect(engine.getCellValue(adr('A1'))).toEqual(1)
+      })
+
+      it('in sorted horizontal range', () => {
+        const engine = HyperFormula.buildFromArray([
+          ['=XLOOKUP(3, A2:E2, A2:E2, "NotFound", -1, 2)'],
+          [1, 2, 2, 5, 6],
+        ], { useColumnIndex: false })
+
+        expect(engine.getCellValue(adr('A1'))).toEqual(2)
+      })
+
+      it('in sorted vertical range', () => {
+        const engine = HyperFormula.buildFromArray([
+          ['=XLOOKUP(3, A2:A6, A2:A6, "NotFound", -1, 2)'],
+          [1],
+          [2],
+          [4],
+          [5],
+          [6]
+        ], { useColumnIndex: false })
+
+        expect(engine.getCellValue(adr('A1'))).toEqual(2)
+      })
+    })
+
+    describe('1, returns an upper bound if the search key is not present', () => {
+      it('in unsorted horizontal range', () => {
+        const engine = HyperFormula.buildFromArray([
+          ['=XLOOKUP(3, A2:E2, A3:E3, "NotFound", 1, 1)'],
+          [2, 1, 4, 4, 5],
+          [1, 2, 3, 4, 5],
+        ], { useColumnIndex: false })
+
+        expect(engine.getCellValue(adr('A1'))).toEqual(3)
+      })
+
+      it('in unsorted vertical range', () => {
+        const engine = HyperFormula.buildFromArray([
+          ['=XLOOKUP(3, A2:A6, B2:B6, "NotFound", 1, 1)'],
+          [2, 1],
+          [1, 2],
+          [4, 3],
+          [4, 4],
+          [5, 5]
+        ], { useColumnIndex: false })
+
+        expect(engine.getCellValue(adr('A1'))).toEqual(3)
+      })
+
+      it('in sorted horizontal range', () => {
+        const engine = HyperFormula.buildFromArray([
+          ['=XLOOKUP(3, A2:E2, A2:E2, "NotFound", 1, 2)'],
+          [1, 2, 4, 5, 6],
+        ], { useColumnIndex: false })
+
+        expect(engine.getCellValue(adr('A1'))).toEqual(4)
+      })
+
+      it('in sorted vertical range', () => {
+        const engine = HyperFormula.buildFromArray([
+          ['=XLOOKUP(3, A2:A6, A2:A6, "NotFound", 1, 2)'],
+          [1],
+          [2],
+          [4],
+          [5],
+          [6]
+        ], { useColumnIndex: false })
+
+        expect(engine.getCellValue(adr('A1'))).toEqual(4)
+      })
+    })
+
+    describe('2, performs a wildcard match', () => {
+      // TODO
+    })
+  })
+
+  describe('with ColumnIndex column search strategy, when provided with matchMode = ', () => {
+    // TODO
+  })
+
   describe('acts similar to Microsoft Excel', () => {
   /**
    * Examples from