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diff --git a/absl/random/mock_distributions_test.cc b/absl/random/mock_distributions_test.cc
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+++ b/absl/random/mock_distributions_test.cc
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+// Copyright 2018 The Abseil Authors.
+//
+// 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
+//
+//      https://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 "absl/random/mock_distributions.h"
+
+#include "gtest/gtest.h"
+#include "absl/random/mocking_bit_gen.h"
+#include "absl/random/random.h"
+
+namespace {
+using ::testing::Return;
+
+TEST(MockDistributions, Examples) {
+  absl::MockingBitGen gen;
+
+  EXPECT_NE(absl::Uniform<int>(gen, 1, 1000000), 20);
+  EXPECT_CALL(absl::MockUniform<int>(), Call(gen, 1, 1000000))
+      .WillOnce(Return(20));
+  EXPECT_EQ(absl::Uniform<int>(gen, 1, 1000000), 20);
+
+  EXPECT_NE(absl::Uniform<double>(gen, 0.0, 100.0), 5.0);
+  EXPECT_CALL(absl::MockUniform<double>(), Call(gen, 0.0, 100.0))
+      .WillOnce(Return(5.0));
+  EXPECT_EQ(absl::Uniform<double>(gen, 0.0, 100.0), 5.0);
+
+  EXPECT_NE(absl::Exponential<double>(gen, 1.0), 42);
+  EXPECT_CALL(absl::MockExponential<double>(), Call(gen, 1.0))
+      .WillOnce(Return(42));
+  EXPECT_EQ(absl::Exponential<double>(gen, 1.0), 42);
+
+  EXPECT_NE(absl::Poisson<int>(gen, 1.0), 500);
+  EXPECT_CALL(absl::MockPoisson<int>(), Call(gen, 1.0)).WillOnce(Return(500));
+  EXPECT_EQ(absl::Poisson<int>(gen, 1.0), 500);
+
+  EXPECT_NE(absl::Bernoulli(gen, 0.000001), true);
+  EXPECT_CALL(absl::MockBernoulli(), Call(gen, 0.000001))
+      .WillOnce(Return(true));
+  EXPECT_EQ(absl::Bernoulli(gen, 0.000001), true);
+
+  EXPECT_NE(absl::Beta<double>(gen, 3.0, 2.0), 0.567);
+  EXPECT_CALL(absl::MockBeta<double>(), Call(gen, 3.0, 2.0))
+      .WillOnce(Return(0.567));
+  EXPECT_EQ(absl::Beta<double>(gen, 3.0, 2.0), 0.567);
+
+  EXPECT_NE(absl::Zipf<int>(gen, 1000000, 2.0, 1.0), 1221);
+  EXPECT_CALL(absl::MockZipf<int>(), Call(gen, 1000000, 2.0, 1.0))
+      .WillOnce(Return(1221));
+  EXPECT_EQ(absl::Zipf<int>(gen, 1000000, 2.0, 1.0), 1221);
+
+  EXPECT_NE(absl::Gaussian<double>(gen, 0.0, 1.0), 0.001);
+  EXPECT_CALL(absl::MockGaussian<double>(), Call(gen, 0.0, 1.0))
+      .WillOnce(Return(0.001));
+  EXPECT_EQ(absl::Gaussian<double>(gen, 0.0, 1.0), 0.001);
+
+  EXPECT_NE(absl::LogUniform<int>(gen, 0, 1000000, 2), 2040);
+  EXPECT_CALL(absl::MockLogUniform<int>(), Call(gen, 0, 1000000, 2))
+      .WillOnce(Return(2040));
+  EXPECT_EQ(absl::LogUniform<int>(gen, 0, 1000000, 2), 2040);
+}
+
+}  // namespace