Adding upstream version 18.2.2.upstream/18.2.2

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 74 insertions, 0 deletions

diff --git a/src/arrow/js/test/unit/ipc/validate.ts b/src/arrow/js/test/unit/ipc/validate.ts
new file mode 100644
index 000000000..aedf87a2d
--- /dev/null
+++ b/src/arrow/js/test/unit/ipc/validate.ts
@@ -0,0 +1,74 @@
+// 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 '../../jest-extensions';
+
+import {
+    Schema,
+    RecordBatch,
+    RecordBatchReader,
+    RecordBatchFileReader,
+    RecordBatchStreamReader,
+} from 'apache-arrow';
+
+export function validateRecordBatchReader<T extends RecordBatchFileReader | RecordBatchStreamReader>(type: 'json' | 'file' | 'stream', numBatches: number, r: T) {
+    const reader = r.open();
+    expect(reader).toBeInstanceOf(RecordBatchReader);
+    expect(type === 'file' ? reader.isFile() : reader.isStream()).toBe(true);
+    expect(reader.schema).toBeInstanceOf(Schema);
+    validateRecordBatchIterator(numBatches, reader[Symbol.iterator]());
+    expect(reader.closed).toBe(reader.autoDestroy);
+    return reader;
+}
+
+export async function validateAsyncRecordBatchReader<T extends RecordBatchReader>(type: 'json' | 'file' | 'stream', numBatches: number, r: T) {
+    const reader = await r.open();
+    expect(reader).toBeInstanceOf(RecordBatchReader);
+    expect(reader.schema).toBeInstanceOf(Schema);
+    expect(type === 'file' ? reader.isFile() : reader.isStream()).toBe(true);
+    await validateRecordBatchAsyncIterator(numBatches, reader[Symbol.asyncIterator]());
+    expect(reader.closed).toBe(reader.autoDestroy);
+    return reader;
+}
+
+export function validateRecordBatchIterator(numBatches: number, iterator: Iterable<RecordBatch> | IterableIterator<RecordBatch>) {
+    let i = 0;
+    try {
+        for (const recordBatch of iterator) {
+            expect(recordBatch).toBeInstanceOf(RecordBatch);
+            expect(i++).toBeLessThan(numBatches);
+        }
+    } catch (e) { throw new Error(`${i}: ${e}`); }
+    expect(i).toBe(numBatches);
+    if (typeof (iterator as any).return === 'function') {
+        (iterator as any).return();
+    }
+}
+
+export async function validateRecordBatchAsyncIterator(numBatches: number, iterator: AsyncIterable<RecordBatch> | AsyncIterableIterator<RecordBatch>) {
+    let i = 0;
+    try {
+        for await (const recordBatch of iterator) {
+            expect(recordBatch).toBeInstanceOf(RecordBatch);
+            expect(i++).toBeLessThan(numBatches);
+        }
+    } catch (e) { throw new Error(`${i}: ${e}`); }
+    expect(i).toBe(numBatches);
+    if (typeof (iterator as any).return === 'function') {
+        await (iterator as any).return();
+    }
+}