diff --git a/tests/FuzzedDataProviderUnittest.cpp b/tests/FuzzedDataProviderUnittest.cpp
new file mode 100644
index 0000000..bcc0eda
--- /dev/null
+++ b/tests/FuzzedDataProviderUnittest.cpp
@@ -0,0 +1,321 @@
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+
+#include "gtest/gtest.h"
+#include <cstdint>
+#include <cstdlib>
+
+#include "utils/FuzzedDataProvider.h"
+
+// The test is intentionally extensive, as behavior of |FuzzedDataProvider| must
+// not be broken, given than many fuzz targets depend on it. Changing the
+// behavior might invalidate existing corpora and make the fuzz targets using
+// |FuzzedDataProvider| to lose code coverage accumulated over time.
+
+/* A random 1KB buffer generated by:
+$ python -c "import os; print ',\n'.join([', '.join(['0x%02X' % ord(i) for i \
+      in list(os.urandom(8))]) for _ in xrange(128)])"
+*/
+const uint8_t Data[] = {
+    0x8A, 0x19, 0x0D, 0x44, 0x37, 0x0D, 0x38, 0x5E, 0x9B, 0xAA, 0xF3, 0xDA,
+    0xAA, 0x88, 0xF2, 0x9B, 0x6C, 0xBA, 0xBE, 0xB1, 0xF2, 0xCF, 0x13, 0xB8,
+    0xAC, 0x1A, 0x7F, 0x1C, 0xC9, 0x90, 0xD0, 0xD9, 0x5C, 0x42, 0xB3, 0xFD,
+    0xE3, 0x05, 0xA4, 0x03, 0x37, 0x49, 0x50, 0x4B, 0xBC, 0x39, 0xA2, 0x09,
+    0x6C, 0x2F, 0xAF, 0xD1, 0xB5, 0x47, 0xBF, 0x92, 0xBD, 0x79, 0xE5, 0xC5,
+    0x6E, 0x51, 0xA4, 0xED, 0xE9, 0xBD, 0x40, 0x4A, 0xFC, 0x25, 0x7A, 0x27,
+    0xC8, 0x92, 0xF7, 0x30, 0xDE, 0x40, 0x66, 0x66, 0xE8, 0x5F, 0x65, 0x39,
+    0x7E, 0x9E, 0x80, 0x2B, 0x01, 0x71, 0x2A, 0xFF, 0xD3, 0x0A, 0xAC, 0x6E,
+    0x49, 0x32, 0x79, 0x10, 0x6A, 0x6F, 0x97, 0x96, 0x70, 0x7E, 0x50, 0x65,
+    0xC9, 0x1D, 0xBD, 0x4E, 0x17, 0x04, 0x1E, 0xBA, 0x26, 0xAC, 0x1F, 0xE3,
+    0x37, 0x1C, 0x15, 0x43, 0x60, 0x41, 0x2A, 0x7C, 0xCA, 0x70, 0xCE, 0xAB,
+    0x20, 0x24, 0xF8, 0xD9, 0x1F, 0x14, 0x7C, 0x5C, 0xDD, 0x6F, 0xB3, 0xD7,
+    0x8B, 0x63, 0x10, 0xB7, 0xDA, 0x99, 0xAF, 0x99, 0x01, 0x21, 0xE6, 0xE1,
+    0x86, 0x27, 0xBE, 0x8D, 0xDF, 0x1E, 0xEA, 0x80, 0x0B, 0x8A, 0x60, 0xC3,
+    0x3A, 0x85, 0x33, 0x53, 0x59, 0xE1, 0xB5, 0xF1, 0x62, 0xA6, 0x7B, 0x24,
+    0x94, 0xE3, 0x8C, 0x10, 0x93, 0xF8, 0x6E, 0xC2, 0x00, 0x91, 0x90, 0x0B,
+    0x5D, 0x52, 0x4F, 0x21, 0xE3, 0x40, 0x3A, 0x6E, 0xB6, 0x32, 0x15, 0xDB,
+    0x5D, 0x01, 0x86, 0x63, 0x83, 0x24, 0xC5, 0xDE, 0xAB, 0x31, 0x84, 0xAA,
+    0xE5, 0x64, 0x02, 0x8D, 0x23, 0x82, 0x86, 0x14, 0x16, 0x18, 0x9F, 0x3D,
+    0x31, 0xBE, 0x3B, 0xF0, 0x6C, 0x26, 0x42, 0x9A, 0x67, 0xFE, 0x28, 0xEC,
+    0x28, 0xDB, 0x01, 0xB4, 0x52, 0x41, 0x81, 0x7C, 0x54, 0xD3, 0xC8, 0x00,
+    0x01, 0x66, 0xB0, 0x2C, 0x3F, 0xBC, 0xAF, 0xAC, 0x87, 0xCD, 0x83, 0xCF,
+    0x23, 0xFC, 0xC8, 0x97, 0x8C, 0x71, 0x32, 0x8B, 0xBF, 0x70, 0xC0, 0x48,
+    0x31, 0x92, 0x18, 0xFE, 0xE5, 0x33, 0x48, 0x82, 0x98, 0x1E, 0x30, 0xCC,
+    0xAD, 0x5D, 0x97, 0xC4, 0xB4, 0x39, 0x7C, 0xCD, 0x39, 0x44, 0xF1, 0xA9,
+    0xD0, 0xF4, 0x27, 0xB7, 0x78, 0x85, 0x9E, 0x72, 0xFC, 0xCC, 0xEE, 0x98,
+    0x25, 0x3B, 0x69, 0x6B, 0x0C, 0x11, 0xEA, 0x22, 0xB6, 0xD0, 0xCD, 0xBF,
+    0x6D, 0xBE, 0x12, 0xDE, 0xFE, 0x78, 0x2E, 0x54, 0xCB, 0xBA, 0xD7, 0x2E,
+    0x54, 0x25, 0x14, 0x84, 0xFE, 0x1A, 0x10, 0xCE, 0xCC, 0x20, 0xE6, 0xE2,
+    0x7F, 0xE0, 0x5F, 0xDB, 0xA7, 0xF3, 0xE2, 0x4C, 0x52, 0x82, 0xFC, 0x0B,
+    0xA0, 0xBD, 0x34, 0x21, 0xF7, 0xEB, 0x1C, 0x5B, 0x67, 0xD0, 0xAF, 0x22,
+    0x15, 0xA1, 0xFF, 0xC2, 0x68, 0x25, 0x5B, 0xB2, 0x13, 0x3F, 0xFF, 0x98,
+    0x53, 0x25, 0xC5, 0x58, 0x39, 0xD0, 0x43, 0x86, 0x6C, 0x5B, 0x57, 0x8E,
+    0x83, 0xBA, 0xB9, 0x09, 0x09, 0x14, 0x0C, 0x9E, 0x99, 0x83, 0x88, 0x53,
+    0x79, 0xFD, 0xF7, 0x49, 0xE9, 0x2C, 0xCE, 0xE6, 0x7B, 0xF5, 0xC2, 0x27,
+    0x5E, 0x56, 0xB5, 0xB4, 0x46, 0x90, 0x91, 0x7F, 0x99, 0x88, 0xA7, 0x23,
+    0xC1, 0x80, 0xB8, 0x2D, 0xCD, 0xF7, 0x6F, 0x9A, 0xEC, 0xBD, 0x16, 0x9F,
+    0x7D, 0x87, 0x1E, 0x15, 0x51, 0xC4, 0x96, 0xE2, 0xBF, 0x61, 0x66, 0xB5,
+    0xFD, 0x01, 0x67, 0xD6, 0xFF, 0xD2, 0x14, 0x20, 0x98, 0x8E, 0xEF, 0xF3,
+    0x22, 0xDB, 0x7E, 0xCE, 0x70, 0x2D, 0x4C, 0x06, 0x5A, 0xA0, 0x4F, 0xC8,
+    0xB0, 0x4D, 0xA6, 0x52, 0xB2, 0xD6, 0x2F, 0xD8, 0x57, 0xE5, 0xEF, 0xF9,
+    0xEE, 0x52, 0x0F, 0xEC, 0xC4, 0x90, 0x33, 0xAD, 0x25, 0xDA, 0xCD, 0x12,
+    0x44, 0x5F, 0x32, 0xF6, 0x6F, 0xEF, 0x85, 0xB8, 0xDC, 0x3C, 0x01, 0x48,
+    0x28, 0x5D, 0x2D, 0x9C, 0x9B, 0xC0, 0x49, 0x36, 0x1E, 0x6A, 0x0A, 0x0C,
+    0xB0, 0x6E, 0x81, 0x89, 0xCB, 0x0A, 0x89, 0xCF, 0x73, 0xC6, 0x63, 0x3D,
+    0x8E, 0x13, 0x57, 0x91, 0x4E, 0xA3, 0x93, 0x8C, 0x61, 0x67, 0xFD, 0x13,
+    0xE0, 0x14, 0x72, 0xB3, 0xE4, 0x23, 0x45, 0x08, 0x4E, 0x4E, 0xF5, 0xA7,
+    0xA8, 0xEE, 0x30, 0xFD, 0x81, 0x80, 0x1F, 0xF3, 0x4F, 0xD7, 0xE7, 0xF2,
+    0x16, 0xC0, 0xD6, 0x15, 0x6A, 0x0F, 0x89, 0x15, 0xA9, 0xCF, 0x35, 0x50,
+    0x6B, 0x49, 0x3E, 0x12, 0x4A, 0x72, 0xE4, 0x59, 0x9D, 0xD7, 0xDB, 0xD2,
+    0xD1, 0x61, 0x7D, 0x52, 0x4A, 0x36, 0xF6, 0xBA, 0x0E, 0xFA, 0x88, 0x6F,
+    0x3C, 0x82, 0x16, 0xF0, 0xD5, 0xED, 0x4D, 0x78, 0xEF, 0x38, 0x17, 0x90,
+    0xEA, 0x28, 0x32, 0xA9, 0x79, 0x40, 0xFF, 0xAA, 0xE6, 0xF5, 0xC7, 0x96,
+    0x56, 0x65, 0x61, 0x83, 0x3D, 0xBD, 0xD7, 0xED, 0xD6, 0xB6, 0xC0, 0xED,
+    0x34, 0xAA, 0x60, 0xA9, 0xE8, 0x82, 0x78, 0xEA, 0x69, 0xF6, 0x47, 0xAF,
+    0x39, 0xAB, 0x11, 0xDB, 0xE9, 0xFB, 0x68, 0x0C, 0xFE, 0xDF, 0x97, 0x9F,
+    0x3A, 0xF4, 0xF3, 0x32, 0x27, 0x30, 0x57, 0x0E, 0xF7, 0xB2, 0xEE, 0xFB,
+    0x1E, 0x98, 0xA8, 0xA3, 0x25, 0x45, 0xE4, 0x6D, 0x2D, 0xAE, 0xFE, 0xDA,
+    0xB3, 0x32, 0x9B, 0x5D, 0xF5, 0x32, 0x74, 0xEA, 0xE5, 0x02, 0x30, 0x53,
+    0x95, 0x13, 0x7A, 0x23, 0x1F, 0x10, 0x30, 0xEA, 0x78, 0xE4, 0x36, 0x1D,
+    0x92, 0x96, 0xB9, 0x91, 0x2D, 0xFA, 0x43, 0xAB, 0xE6, 0xEF, 0x14, 0x14,
+    0xC9, 0xBC, 0x46, 0xC6, 0x05, 0x7C, 0xC6, 0x11, 0x23, 0xCF, 0x3D, 0xC8,
+    0xBE, 0xEC, 0xA3, 0x58, 0x31, 0x55, 0x65, 0x14, 0xA7, 0x94, 0x93, 0xDD,
+    0x2D, 0x76, 0xC9, 0x66, 0x06, 0xBD, 0xF5, 0xE7, 0x30, 0x65, 0x42, 0x52,
+    0xA2, 0x50, 0x9B, 0xE6, 0x40, 0xA2, 0x4B, 0xEC, 0xA6, 0xB7, 0x39, 0xAA,
+    0xD7, 0x61, 0x2C, 0xBF, 0x37, 0x5A, 0xDA, 0xB3, 0x5D, 0x2F, 0x5D, 0x11,
+    0x82, 0x97, 0x32, 0x8A, 0xC1, 0xA1, 0x13, 0x20, 0x17, 0xBD, 0xA2, 0x91,
+    0x94, 0x2A, 0x4E, 0xBE, 0x3E, 0x77, 0x63, 0x67, 0x5C, 0x0A, 0xE1, 0x22,
+    0x0A, 0x4F, 0x63, 0xE2, 0x84, 0xE9, 0x9F, 0x14, 0x86, 0xE2, 0x4B, 0x20,
+    0x9F, 0x50, 0xB3, 0x56, 0xED, 0xDE, 0x39, 0xD8, 0x75, 0x64, 0x45, 0x54,
+    0xE5, 0x34, 0x57, 0x8C, 0x3B, 0xF2, 0x0E, 0x94, 0x1B, 0x10, 0xA2, 0xA2,
+    0x38, 0x76, 0x21, 0x8E, 0x2A, 0x57, 0x64, 0x58, 0x0A, 0x27, 0x6D, 0x4C,
+    0xD0, 0xB5, 0xC1, 0xFC, 0x75, 0xD0, 0x01, 0x86, 0x66, 0xA8, 0xF1, 0x98,
+    0x58, 0xFB, 0xFC, 0x64, 0xD2, 0x31, 0x77, 0xAD, 0x0E, 0x46, 0x87, 0xCC,
+    0x9B, 0x86, 0x90, 0xFF, 0xB6, 0x64, 0x35, 0xA5, 0x5D, 0x9E, 0x44, 0x51,
+    0x87, 0x9E, 0x1E, 0xEE, 0xF3, 0x3B, 0x5C, 0xDD, 0x94, 0x03, 0xAA, 0x18,
+    0x2C, 0xB7, 0xC4, 0x37, 0xD5, 0x53, 0x28, 0x60, 0xEF, 0x77, 0xEF, 0x3B,
+    0x9E, 0xD2, 0xCE, 0xE9, 0x53, 0x2D, 0xF5, 0x19, 0x7E, 0xBB, 0xB5, 0x46,
+    0xE2, 0xF7, 0xD6, 0x4D, 0x6D, 0x5B, 0x81, 0x56, 0x6B, 0x12, 0x55, 0x63,
+    0xC3, 0xAB, 0x08, 0xBB, 0x2E, 0xD5, 0x11, 0xBC, 0x18, 0xCB, 0x8B, 0x12,
+    0x2E, 0x3E, 0x75, 0x32, 0x98, 0x8A, 0xDE, 0x3C, 0xEA, 0x33, 0x46, 0xE7,
+    0x7A, 0xA5, 0x12, 0x09, 0x26, 0x7E, 0x7E, 0x03, 0x4F, 0xFD, 0xC0, 0xFD,
+    0xEA, 0x4F, 0x83, 0x85, 0x39, 0x62, 0xFB, 0xA2, 0x33, 0xD9, 0x2D, 0xB1,
+    0x30, 0x6F, 0x88, 0xAB, 0x61, 0xCB, 0x32, 0xEB, 0x30, 0xF9, 0x51, 0xF6,
+    0x1F, 0x3A, 0x11, 0x4D, 0xFD, 0x54, 0xD6, 0x3D, 0x43, 0x73, 0x39, 0x16,
+    0xCF, 0x3D, 0x29, 0x4A};
+
+TEST(FuzzedDataProvider, ConsumeBytes) {
+  FuzzedDataProvider DataProv(Data, sizeof(Data));
+  EXPECT_EQ(std::vector<char>(1, 0x8A), DataProv.ConsumeBytes<char>(1));
+  EXPECT_EQ(std::vector<uint8_t>(
+                {0x19, 0x0D, 0x44, 0x37, 0x0D, 0x38, 0x5E, 0x9B, 0xAA, 0xF3}),
+            DataProv.ConsumeBytes<uint8_t>(10));
+
+  std::vector<unsigned char> UChars = DataProv.ConsumeBytes(24);
+  EXPECT_EQ(std::vector<unsigned char>({0xDA, 0xAA, 0x88, 0xF2, 0x9B, 0x6C,
+                                        0xBA, 0xBE, 0xB1, 0xF2, 0xCF, 0x13,
+                                        0xB8, 0xAC, 0x1A, 0x7F, 0x1C, 0xC9,
+                                        0x90, 0xD0, 0xD9, 0x5C, 0x42, 0xB3}),
+            UChars);
+
+  EXPECT_EQ(std::vector<signed char>(Data + 1 + 10 + 24, Data + sizeof(Data)),
+            DataProv.ConsumeBytes<signed char>(31337));
+}
+
+TEST(FuzzedDataProvider, ConsumeBytesAsString) {
+  FuzzedDataProvider DataProv(Data, sizeof(Data));
+  EXPECT_EQ(std::string("\x8A\x19\x0D\x44\x37\x0D\x38\x5E\x9B\xAA\xF3\xDA"),
+            DataProv.ConsumeBytesAsString(12));
+  EXPECT_EQ(std::string(Data + 12, Data + sizeof(Data)),
+            DataProv.ConsumeBytesAsString(31337));
+}
+
+TEST(FuzzedDataProvider, ConsumeIntegralInRange) {
+  FuzzedDataProvider DataProv(Data, sizeof(Data));
+  EXPECT_EQ(int32_t(21), DataProv.ConsumeIntegralInRange<int32_t>(10, 30));
+  EXPECT_EQ(int32_t(1337),
+            DataProv.ConsumeIntegralInRange<int32_t>(1337, 1337));
+  EXPECT_EQ(int8_t(-59), DataProv.ConsumeIntegralInRange<int8_t>(-100, 100));
+  EXPECT_EQ(uint16_t(15823),
+            DataProv.ConsumeIntegralInRange<uint16_t>(0, 65535));
+  EXPECT_EQ((signed char)(-101),
+            DataProv.ConsumeIntegralInRange<signed char>(-123, 123));
+  EXPECT_EQ(int64_t(-53253077544), DataProv.ConsumeIntegralInRange<int64_t>(
+                                       -99999999999, 99999999999));
+
+  // Exhaust the buffer.
+  auto String = DataProv.ConsumeBytesAsString(31337);
+  EXPECT_EQ(size_t(1014), String.length());
+  EXPECT_EQ(uint64_t(123456789),
+            DataProv.ConsumeIntegralInRange<uint64_t>(123456789, 987654321));
+}
+
+TEST(FuzzedDataProvider, ConsumeRandomLengthString) {
+  FuzzedDataProvider DataProv(Data, sizeof(Data));
+  EXPECT_EQ(
+      std::string(
+          "\x8A\x19\x0D\x44\x37\x0D\x38\x5E\x9B\xAA\xF3\xDA\xAA\x88\xF2\x9B\x6C"
+          "\xBA\xBE\xB1\xF2\xCF\x13\xB8\xAC\x1A\x7F\x1C\xC9\x90\xD0\xD9"),
+      DataProv.ConsumeRandomLengthString(1337));
+  EXPECT_EQ(std::string(
+                "\xB3\xFD\xE3\x05\xA4\x03\x37\x49\x50\x4B\xBC\x39\xA2\x09\x6C"
+                "\x2F\xAF\xD1\xB5\x47\xBF\x92\xBD\x79\xE5\xC5\x6E\x51\xA4\xED"
+                "\xE9\xBD\x40\x4A\xFC\x25\x7A\x27\xC8\x92\xF7\x30\xDE\x40\x66"
+                "\x66\xE8\x5F\x65\x39\x7E\x9E\x80\x2B\x01\x71\x2A\xFF\xD3\x0A"
+                "\xAC\x6E\x49\x32\x79\x10\x6A\x6F\x97\x96\x70\x7E\x50\x65\xC9"
+                "\x1D\xBD\x4E\x17\x04\x1E\xBA\x26\xAC\x1F\xE3\x37\x1C\x15\x43"
+                "\x60\x41\x2A\x7C\xCA\x70\xCE\xAB\x20\x24\xF8\xD9\x1F\x14\x7C"),
+            DataProv.ConsumeRandomLengthString(31337));
+  EXPECT_EQ(std::string(Data + 141, Data + 141 + 5),
+            DataProv.ConsumeRandomLengthString(5));
+  EXPECT_EQ(std::string(Data + 141 + 5, Data + 141 + 5 + 2),
+            DataProv.ConsumeRandomLengthString(2));
+
+  // Exhaust the buffer.
+  auto String = DataProv.ConsumeBytesAsString(31337);
+  EXPECT_EQ(size_t(876), String.length());
+  EXPECT_EQ(std::string(), DataProv.ConsumeRandomLengthString(1));
+}
+
+TEST(FuzzedDataProvider, ConsumeRemainingBytes) {
+  {
+    FuzzedDataProvider DataProv(Data, sizeof(Data));
+    EXPECT_EQ(std::vector<uint8_t>(Data, Data + sizeof(Data)),
+              DataProv.ConsumeRemainingBytes());
+    EXPECT_EQ(std::vector<uint8_t>(), DataProv.ConsumeRemainingBytes());
+  }
+
+  {
+    FuzzedDataProvider DataProv(Data, sizeof(Data));
+    EXPECT_EQ(std::vector<uint8_t>(Data, Data + 123),
+              DataProv.ConsumeBytes(123));
+    EXPECT_EQ(std::vector<char>(Data + 123, Data + sizeof(Data)),
+              DataProv.ConsumeRemainingBytes<char>());
+  }
+}
+
+TEST(FuzzedDataProvider, ConsumeRemainingBytesAsString) {
+  {
+    FuzzedDataProvider DataProv(Data, sizeof(Data));
+    EXPECT_EQ(std::string(Data, Data + sizeof(Data)),
+              DataProv.ConsumeRemainingBytesAsString());
+    EXPECT_EQ(std::string(""), DataProv.ConsumeRemainingBytesAsString());
+  }
+
+  {
+    FuzzedDataProvider DataProv(Data, sizeof(Data));
+    EXPECT_EQ(std::vector<uint8_t>(Data, Data + 123),
+              DataProv.ConsumeBytes(123));
+    EXPECT_EQ(std::string(Data + 123, Data + sizeof(Data)),
+              DataProv.ConsumeRemainingBytesAsString());
+  }
+}
+
+TEST(FuzzedDataProvider, ConsumeIntegral) {
+  FuzzedDataProvider DataProv(Data, sizeof(Data));
+  EXPECT_EQ(int32_t(-903266865), DataProv.ConsumeIntegral<int32_t>());
+  EXPECT_EQ(uint32_t(372863811), DataProv.ConsumeIntegral<uint32_t>());
+  EXPECT_EQ(uint8_t(61), DataProv.ConsumeIntegral<uint8_t>());
+  EXPECT_EQ(int16_t(22100), DataProv.ConsumeIntegral<int16_t>());
+  EXPECT_EQ(uint64_t(18252263806144500217u),
+            DataProv.ConsumeIntegral<uint64_t>());
+
+  // Exhaust the buffer.
+  auto String = DataProv.ConsumeBytesAsString(31337);
+  EXPECT_EQ(size_t(1005), String.length());
+  EXPECT_EQ(std::numeric_limits<int64_t>::min(),
+            DataProv.ConsumeIntegral<int64_t>());
+}
+
+TEST(FuzzedDataProvider, ConsumeBool) {
+  FuzzedDataProvider DataProv(Data, sizeof(Data));
+  EXPECT_EQ(false, DataProv.ConsumeBool());
+  EXPECT_EQ(true, DataProv.ConsumeBool());
+  EXPECT_EQ(true, DataProv.ConsumeBool());
+  EXPECT_EQ(true, DataProv.ConsumeBool());
+  EXPECT_EQ(false, DataProv.ConsumeBool());
+  EXPECT_EQ(true, DataProv.ConsumeBool());
+  EXPECT_EQ(true, DataProv.ConsumeBool());
+  EXPECT_EQ(true, DataProv.ConsumeBool());
+  EXPECT_EQ(true, DataProv.ConsumeBool());
+  EXPECT_EQ(false, DataProv.ConsumeBool());
+
+  // Exhaust the buffer.
+  auto String = DataProv.ConsumeBytesAsString(31337);
+  EXPECT_EQ(size_t(1014), String.length());
+  EXPECT_EQ(false, DataProv.ConsumeBool());
+}
+
+TEST(FuzzedDataProvider, PickValueInArray) {
+  FuzzedDataProvider DataProv(Data, sizeof(Data));
+  const int Array[] = {1, 2, 3, 4, 5};
+  EXPECT_EQ(5, DataProv.PickValueInArray(Array));
+  EXPECT_EQ(2, DataProv.PickValueInArray(Array));
+  EXPECT_EQ(2, DataProv.PickValueInArray(Array));
+  EXPECT_EQ(3, DataProv.PickValueInArray(Array));
+  EXPECT_EQ(3, DataProv.PickValueInArray(Array));
+  EXPECT_EQ(3, DataProv.PickValueInArray(Array));
+  EXPECT_EQ(1, DataProv.PickValueInArray(Array));
+  EXPECT_EQ(3, DataProv.PickValueInArray(Array));
+  EXPECT_EQ(2, DataProv.PickValueInArray(Array));
+
+  EXPECT_EQ(uint8_t(0x9D), DataProv.PickValueInArray(Data));
+  EXPECT_EQ(uint8_t(0xBA), DataProv.PickValueInArray(Data));
+  EXPECT_EQ(uint8_t(0x69), DataProv.PickValueInArray(Data));
+  EXPECT_EQ(uint8_t(0xD6), DataProv.PickValueInArray(Data));
+
+  // Exhaust the buffer.
+  auto String = DataProv.ConsumeBytesAsString(31337);
+  EXPECT_EQ(size_t(1007), String.length());
+  EXPECT_EQ(uint8_t(0x8A), DataProv.PickValueInArray(Data));
+}
+
+TEST(FuzzedDataProvider, ConsumeEnum) {
+  FuzzedDataProvider DataProv(Data, sizeof(Data));
+  enum class Enum {
+    Zero,
+    One,
+    Two,
+    Three,
+    Four,
+    Five,
+    Six,
+    Seven,
+    kMaxValue = Seven
+  };
+  EXPECT_EQ(Enum::Two, DataProv.ConsumeEnum<Enum>());
+  EXPECT_EQ(Enum::One, DataProv.ConsumeEnum<Enum>());
+  EXPECT_EQ(Enum::Five, DataProv.ConsumeEnum<Enum>());
+  EXPECT_EQ(Enum::Seven, DataProv.ConsumeEnum<Enum>());
+  EXPECT_EQ(Enum::Six, DataProv.ConsumeEnum<Enum>());
+  EXPECT_EQ(Enum::One, DataProv.ConsumeEnum<Enum>());
+  EXPECT_EQ(Enum::Three, DataProv.ConsumeEnum<Enum>());
+  EXPECT_EQ(Enum::Three, DataProv.ConsumeEnum<Enum>());
+  EXPECT_EQ(Enum::Five, DataProv.ConsumeEnum<Enum>());
+  EXPECT_EQ(Enum::Six, DataProv.ConsumeEnum<Enum>());
+
+  // Exhaust the buffer.
+  auto String = DataProv.ConsumeBytesAsString(31337);
+  EXPECT_EQ(size_t(1014), String.length());
+  EXPECT_EQ(Enum::Zero, DataProv.ConsumeEnum<Enum>());
+}
+
+TEST(FuzzedDataProvider, remaining_bytes) {
+  FuzzedDataProvider DataProv(Data, sizeof(Data));
+  EXPECT_EQ(size_t(1024), DataProv.remaining_bytes());
+  EXPECT_EQ(false, DataProv.ConsumeBool());
+  EXPECT_EQ(size_t(1024 - 1), DataProv.remaining_bytes());
+  EXPECT_EQ(std::vector<uint8_t>(Data, Data + 8), DataProv.ConsumeBytes(8));
+  EXPECT_EQ(size_t(1024 - 1 - 8), DataProv.remaining_bytes());
+
+  // Exhaust the buffer.
+  EXPECT_EQ(std::vector<uint8_t>(Data + 8, Data + sizeof(Data) - 1),
+            DataProv.ConsumeRemainingBytes());
+  EXPECT_EQ(size_t(0), DataProv.remaining_bytes());
+}
+
+int main(int argc, char **argv) {
+  testing::InitGoogleTest(&argc, argv);
+  return RUN_ALL_TESTS();
+}
diff --git a/utils/FuzzedDataProvider.h b/utils/FuzzedDataProvider.h
new file mode 100644
index 0000000..252f1f6
--- /dev/null
+++ b/utils/FuzzedDataProvider.h
@@ -0,0 +1,205 @@
+//===- FuzzedDataProvider.h - Utility header for fuzz targets ---*- C++ -* ===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+// A single header library providing an utility class to break up an array of
+// bytes (supposedly provided by a fuzzing engine) for multiple consumers.
+// Whenever run on the same input, provides the same output, as long as its
+// methods are called in the same order, with the same arguments.
+//===----------------------------------------------------------------------===//
+
+#ifndef LLVM_FUZZER_FUZZED_DATA_PROVIDER_H_
+#define LLVM_FUZZER_FUZZED_DATA_PROVIDER_H_
+
+#include <limits.h>
+#include <stddef.h>
+#include <stdint.h>
+
+#include <algorithm>
+#include <cstring>
+#include <string>
+#include <type_traits>
+#include <utility>
+#include <vector>
+
+class FuzzedDataProvider {
+ public:
+  typedef uint8_t data_type;
+
+  // |data| is an array of length |size| that the FuzzedDataProvider wraps to
+  // provide more granular access. |data| must outlive the FuzzedDataProvider.
+  FuzzedDataProvider(const uint8_t* data, size_t size)
+      : data_ptr_(data), remaining_bytes_(size) {}
+  ~FuzzedDataProvider() = default;
+
+  // Returns a std::vector containing |num_bytes| of input data. If fewer than
+  // |num_bytes| of data remain, returns a shorter std::vector containing all
+  // of the data that's left.
+  template <typename T = data_type>
+  std::vector<T> ConsumeBytes(size_t num_bytes) {
+    static_assert(sizeof(T) == sizeof(data_type), "Incompatible data type.");
+
+    num_bytes = std::min(num_bytes, remaining_bytes_);
+
+    // The point of using the size-based constructor below is to increase the
+    // odds of having a vector object with capacity being equal to the length.
+    // That part is always implementation specific, but at least both libc++ and
+    // libstdc++ allocate the requested number of bytes in that constructor,
+    // which seems to be a natual choice for other implementations as well.
+    // To increase the odds even more, we also call |shrink_to_fit| below.
+    std::vector<T> result(num_bytes);
+    std::memcpy(result.data(), data_ptr_, num_bytes);
+    Advance(num_bytes);
+
+    // Even though |shrink_to_fit| is also implementation specific, we expect it
+    // to provide an additional assurance in case vector's constructor allocated
+    // a buffer which is larger than the actual amount of data we put inside it.
+    result.shrink_to_fit();
+    return result;
+  }
+
+  // Prefer using |ConsumeBytes| unless you actually need a std::string object.
+  // Returns a std::string containing |num_bytes| of input data. If fewer than
+  // |num_bytes| of data remain, returns a shorter std::string containing all
+  // of the data that's left.
+  std::string ConsumeBytesAsString(size_t num_bytes) {
+    static_assert(sizeof(std::string::value_type) == sizeof(data_type),
+                  "ConsumeBytesAsString cannot convert the data to a string.");
+
+    num_bytes = std::min(num_bytes, remaining_bytes_);
+    std::string result(
+        reinterpret_cast<const std::string::value_type*>(data_ptr_), num_bytes);
+    Advance(num_bytes);
+    return result;
+  }
+
+  // Returns a number in the range [min, max] by consuming bytes from the input
+  // data. The value might not be uniformly distributed in the given range. If
+  // there's no input data left, always returns |min|. |min| must be less than
+  // or equal to |max|.
+  template <typename T>
+  T ConsumeIntegralInRange(T min, T max) {
+    static_assert(std::is_integral<T>::value, "An integral type is required.");
+    static_assert(sizeof(T) <= sizeof(uint64_t), "Unsupported integral type.");
+
+    if (min > max)
+      abort();
+
+    // Use the biggest type possible to hold the range and the result.
+    uint64_t range = static_cast<uint64_t>(max) - min;
+    uint64_t result = 0;
+    size_t offset = 0;
+
+    while (offset < sizeof(T) * CHAR_BIT && (range >> offset) > 0 &&
+           remaining_bytes_ != 0) {
+      // Pull bytes off the end of the seed data. Experimentally, this seems to
+      // allow the fuzzer to more easily explore the input space. This makes
+      // sense, since it works by modifying inputs that caused new code to run,
+      // and this data is often used to encode length of data read by
+      // |ConsumeBytes|. Separating out read lengths makes it easier modify the
+      // contents of the data that is actually read.
+      --remaining_bytes_;
+      result = (result << CHAR_BIT) | data_ptr_[remaining_bytes_];
+      offset += CHAR_BIT;
+    }
+
+    // Avoid division by 0, in the case |range + 1| results in overflow.
+    if (range != std::numeric_limits<decltype(range)>::max())
+      result = result % (range + 1);
+
+    return static_cast<T>(min + result);
+  }
+
+  // Returns a std::string of length from 0 to |max_length|. When it runs out of
+  // input data, returns what remains of the input. Designed to be more stable
+  // with respect to a fuzzer inserting characters than just picking a random
+  // length and then consuming that many bytes with |ConsumeBytes|.
+  std::string ConsumeRandomLengthString(size_t max_length) {
+    // Reads bytes from the start of |data_ptr_|. Maps "\\" to "\", and maps "\"
+    // followed by anything else to the end of the string. As a result of this
+    // logic, a fuzzer can insert characters into the string, and the string
+    // will be lengthened to include those new characters, resulting in a more
+    // stable fuzzer than picking the length of a string independently from
+    // picking its contents.
+    std::string result;
+    for (size_t i = 0; i < max_length && remaining_bytes_ != 0; ++i) {
+      char next = static_cast<char>(data_ptr_[0]);
+      Advance(1);
+      if (next == '\\' && remaining_bytes_ != 0) {
+        next = static_cast<char>(data_ptr_[0]);
+        Advance(1);
+        if (next != '\\')
+          return result;
+      }
+      result += next;
+    }
+
+    result.shrink_to_fit();
+    return result;
+  }
+
+  // Returns a std::vector containing all remaining bytes of the input data.
+  template <typename T = data_type>
+  std::vector<T> ConsumeRemainingBytes() {
+    return ConsumeBytes<T>(remaining_bytes_);
+  }
+
+  // Prefer using |ConsumeRemainingBytes| unless you actually need a std::string
+  // object.
+  // Returns a std::vector containing all remaining bytes of the input data.
+  std::string ConsumeRemainingBytesAsString() {
+    return ConsumeBytesAsString(remaining_bytes_);
+  }
+
+  // Returns a number in the range [Type's min, Type's max]. The value might
+  // not be uniformly distributed in the given range. If there's no input data
+  // left, always returns |min|.
+  template <typename T>
+  T ConsumeIntegral() {
+    return ConsumeIntegralInRange(std::numeric_limits<T>::min(),
+                                  std::numeric_limits<T>::max());
+  }
+
+  // Reads one byte and returns a bool, or false when no data remains.
+  bool ConsumeBool() { return 1 & ConsumeIntegral<uint8_t>(); }
+
+  // Returns a value from |array|, consuming as many bytes as needed to do so.
+  // |array| must be a fixed-size array.
+  template <typename T, size_t size>
+  T PickValueInArray(T (&array)[size]) {
+    return array[ConsumeIntegralInRange<size_t>(0, size - 1)];
+  }
+
+  // Return an enum value. The enum must start at 0 and be contiguous. It must
+  // also contain |kMaxValue| aliased to its largest (inclusive) value. Such as:
+  // enum class Foo { SomeValue, OtherValue, kMaxValue = OtherValue };
+  template <typename T>
+  T ConsumeEnum() {
+    static_assert(std::is_enum<T>::value, "|T| must be an enum type.");
+    return static_cast<T>(ConsumeIntegralInRange<uint32_t>(
+        0, static_cast<uint32_t>(T::kMaxValue)));
+  }
+
+  // Reports the remaining bytes available for fuzzed input.
+  size_t remaining_bytes() { return remaining_bytes_; }
+
+ private:
+  FuzzedDataProvider(const FuzzedDataProvider&) = delete;
+  FuzzedDataProvider& operator=(const FuzzedDataProvider&) = delete;
+
+  void Advance(size_t num_bytes) {
+    if (num_bytes > remaining_bytes_)
+      abort();
+
+    data_ptr_ += num_bytes;
+    remaining_bytes_ -= num_bytes;
+  }
+
+  const data_type* data_ptr_;
+  size_t remaining_bytes_;
+};
+
+#endif  // LLVM_FUZZER_FUZZED_DATA_PROVIDER_H_