1 files changed, 91 insertions, 0 deletions
diff --git a/src/arrow/js/test/unit/builders/uint64-tests.ts b/src/arrow/js/test/unit/builders/uint64-tests.ts
new file mode 100644
index 000000000..e08e25b5c
--- /dev/null
+++ b/src/arrow/js/test/unit/builders/uint64-tests.ts
@@ -0,0 +1,91 @@
+// Licensed to the Apache Software Foundation (ASF) under one
+// or more contributor license agreements.  See the NOTICE file
+// distributed with this work for additional information
+// regarding copyright ownership.  The ASF licenses this file
+// to you under the Apache License, Version 2.0 (the
+// "License"); you may not use this file except in compliance
+// with the License.  You may obtain a copy of the License at
+//
+//   http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing,
+// software distributed under the License is distributed on an
+// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+// KIND, either express or implied.  See the License for the
+// specific language governing permissions and limitations
+// under the License.
+
+import { util, Vector, DataType, Uint64 } from 'apache-arrow';
+import {
+    validateVector,
+    encodeAll, encodeEach, encodeEachDOM, encodeEachNode,
+    uint64sNoNulls, uint64sWithNulls, uint64sWithMaxInts,
+} from './utils';
+
+const testDOMStreams = process.env.TEST_DOM_STREAMS === 'true';
+const testNodeStreams = process.env.TEST_NODE_STREAMS === 'true';
+
+const typeFactory = () => new Uint64();
+const valueName = `Uint64`.toLowerCase();
+const encode0 = encodeAll(typeFactory);
+const encode1 = encodeEach(typeFactory);
+const encode2 = encodeEach(typeFactory, 5);
+const encode3 = encodeEach(typeFactory, 25);
+const encode4 = encodeEachDOM(typeFactory, 25);
+const encode5 = encodeEachNode(typeFactory, 25);
+
+const nulls0: any[] = [0x7fffffff];
+const nulls1: any[] = [0x7fffffff];
+nulls0[0] = new Uint32Array([0x7fffffff, 0x7fffffff]);
+nulls1[0] = util.BN.new(nulls0[0])[Symbol.toPrimitive]();
+
+type ValuesToVector<T extends DataType> = (values: (T['TValue'] | null)[], nullVals?: any[]) => Promise<Vector<T>>;
+
+function encodeAndValidate<T extends DataType>(encode: ValuesToVector<T>, providedNulls: any[] = [], expectedNulls = providedNulls) {
+    return (values: any[]) => {
+        return async () => {
+            const vector = await encode(values, providedNulls);
+            const expected = values.map((x) => {
+                switch (typeof x) {
+                    case 'number': return new Uint32Array([x, 0]);
+                    case 'bigint': return new Uint32Array(new BigUint64Array([x]).buffer);
+                }
+                return x ? x.slice() : x;
+            });
+            return validateVector(expected, vector, expectedNulls);
+        };
+    };
+}
+
+describe(`Uint64Builder`, () => {
+    describe(`encode single chunk`, () => {
+        it(`encodes ${valueName} no nulls`, encodeAndValidate(encode0, [], [])(uint64sNoNulls(20)));
+        it(`encodes ${valueName} with nulls`, encodeAndValidate(encode0, [null], [null])(uint64sWithNulls(20)));
+        it(`encodes ${valueName} with MAX_INT`, encodeAndValidate(encode0, nulls0, nulls1)(uint64sWithMaxInts(20)));
+    });
+    describe(`encode chunks length default`, () => {
+        it(`encodes ${valueName} no nulls`, encodeAndValidate(encode1, [], [])(uint64sNoNulls(20)));
+        it(`encodes ${valueName} with nulls`, encodeAndValidate(encode1, [null], [null])(uint64sWithNulls(20)));
+        it(`encodes ${valueName} with MAX_INT`, encodeAndValidate(encode1, nulls0, nulls1)(uint64sWithMaxInts(20)));
+    });
+    describe(`encode chunks length 5`, () => {
+        it(`encodes ${valueName} no nulls`, encodeAndValidate(encode2, [], [])(uint64sNoNulls(20)));
+        it(`encodes ${valueName} with nulls`, encodeAndValidate(encode2, [null], [null])(uint64sWithNulls(20)));
+        it(`encodes ${valueName} with MAX_INT`, encodeAndValidate(encode2, nulls0, nulls1)(uint64sWithMaxInts(20)));
+    });
+    describe(`encode chunks length 25`, () => {
+        it(`encodes ${valueName} no nulls`, encodeAndValidate(encode3, [], [])(uint64sNoNulls(20)));
+        it(`encodes ${valueName} with nulls`, encodeAndValidate(encode3, [null], [null])(uint64sWithNulls(20)));
+        it(`encodes ${valueName} with MAX_INT`, encodeAndValidate(encode3, nulls0, nulls1)(uint64sWithMaxInts(20)));
+    });
+    testDOMStreams && describe(`encode chunks length 25, WhatWG stream`, () => {
+        it(`encodes ${valueName} no nulls`, encodeAndValidate(encode4, [], [])(uint64sNoNulls(20)));
+        it(`encodes ${valueName} with nulls`, encodeAndValidate(encode4, [null], [null])(uint64sWithNulls(20)));
+        it(`encodes ${valueName} with MAX_INT`, encodeAndValidate(encode4, nulls0, nulls1)(uint64sWithMaxInts(20)));
+    });
+    testNodeStreams && describe(`encode chunks length 25, NodeJS stream`, () => {
+        it(`encodes ${valueName} no nulls`, encodeAndValidate(encode5, [], [])(uint64sNoNulls(20)));
+        it(`encodes ${valueName} with nulls`, encodeAndValidate(encode5, [null], [null])(uint64sWithNulls(20)));
+        it(`encodes ${valueName} with MAX_INT`, encodeAndValidate(encode5, nulls0, nulls1)(uint64sWithMaxInts(20)));
+    });
+});