wip: unit test InMemoryLogRecordExporter

test/unit/sdk/logs/exporters/inmemory_log_record_exporter_test.dart

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+// Copyright 2021-2022 Workiva.
+// Licensed under the Apache License, Version 2.0. Please see https://github.com/Workiva/opentelemetry-dart/blob/master/LICENSE for more information
+
+@TestOn('vm')
+import 'package:fixnum/fixnum.dart';
+import 'package:opentelemetry/api.dart' as api;
+import 'package:opentelemetry/sdk.dart' as sdk;
+import 'package:opentelemetry/src/experimental_sdk.dart' as sdk;
+import 'package:opentelemetry/src/sdk/logs/log_record_limit.dart';
+import 'package:test/test.dart';
+
+import '../../../mocks.dart';
+
+void main() {
+  test('Test exporter', () async {
+    final exporter = sdk.InMemoryLogRecordExporter();
+    final logRecord = sdk.LogRecord(
+      instrumentationScope: sdk.InstrumentationScope('library_name', 'library_version', 'url://schema', []),
+      logRecordLimits: LogRecordLimitsImpl(),
+      timeProvider: FakeTimeProvider(now: Int64(123)),
+      resource: sdk.Resource([api.Attribute.fromString('resource.name', 'test')]),
+    )
+      ..makeReadonly()
+      ..body = 'Log Message';
+
+    await exporter.export([logRecord]);
+
+    expect(exporter.finishedLogRecords.length, 1);
+    expect(exporter.finishedLogRecords.first.instrumentationScope?.name, 'library_name');
+
+    await exporter.shutdown();
+
+    expect(exporter.finishedLogRecords.length, 0);
+  });
+}