1 files changed, 32 insertions, 0 deletions
diff --git a/Firestore/test/support/secure_random_test.cc b/Firestore/test/support/secure_random_test.cc
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+++ b/Firestore/test/support/secure_random_test.cc
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+/*
+ * Copyright 2017 Google
+ *
+ * Licensed 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.
+ */
+
+#include "Firestore/src/support/secure_random.h"
+
+#include "gtest/gtest.h"
+
+using firestore::SecureRandom;
+
+TEST(SecureRandomTest, ResultsAreBounded) {
+  SecureRandom rng;
+
+  // Verify that values are on the min/max closed interval.
+  for (int i = 0; i < 1000; i++) {
+    SecureRandom::result_type value = rng();
+    EXPECT_GE(value, rng.min());
+    EXPECT_LE(value, rng.max());
+  }
+}