diff --git a/Lines changed: 167 additions & 0 deletions b/Lines changed: 167 additions & 0 deletions
diff --git a/Lines changed: 0 additions & 110 deletions b/Lines changed: 0 additions & 110 deletions
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+'use strict';
+
+require('../common');
+const assert = require('assert');
+
+// Test OOB
+{
+  const buffer = Buffer.alloc(4);
+
+  ['UInt8', 'UInt16BE', 'UInt16LE', 'UInt32BE', 'UInt32LE'].forEach((fn) => {
+
+    // Verify that default offset works fine.
+    buffer[`read${fn}`](undefined);
+    buffer[`read${fn}`]();
+
+    ['', '0', null, {}, [], () => {}, true, false].forEach((o) => {
+      assert.throws(
+        () => buffer[`read${fn}`](o),
+        {
+          code: 'ERR_INVALID_ARG_TYPE',
+          name: 'TypeError [ERR_INVALID_ARG_TYPE]'
+        });
+    });
+
+    [Infinity, -1, -4294967295].forEach((offset) => {
+      assert.throws(
+        () => buffer[`read${fn}`](offset),
+        {
+          code: 'ERR_OUT_OF_RANGE',
+          name: 'RangeError [ERR_OUT_OF_RANGE]'
+        });
+    });
+
+    [NaN, 1.01].forEach((offset) => {
+      assert.throws(
+        () => buffer[`read${fn}`](offset),
+        {
+          code: 'ERR_OUT_OF_RANGE',
+          name: 'RangeError [ERR_OUT_OF_RANGE]',
+          message: 'The value of "offset" is out of range. ' +
+                   `It must be an integer. Received ${offset}`
+        });
+    });
+  });
+}
+
+// Test 8 bit unsigned integers
+{
+  const data = Buffer.from([0xff, 0x2a, 0x2a, 0x2a]);
+  assert.strictEqual(255, data.readUInt8(0));
+  assert.strictEqual(42, data.readUInt8(1));
+  assert.strictEqual(42, data.readUInt8(2));
+  assert.strictEqual(42, data.readUInt8(3));
+}
+
+// Test 16 bit unsigned integers
+{
+  const data = Buffer.from([0x00, 0x2a, 0x42, 0x3f]);
+  assert.strictEqual(0x2a, data.readUInt16BE(0));
+  assert.strictEqual(0x2a42, data.readUInt16BE(1));
+  assert.strictEqual(0x423f, data.readUInt16BE(2));
+  assert.strictEqual(0x2a00, data.readUInt16LE(0));
+  assert.strictEqual(0x422a, data.readUInt16LE(1));
+  assert.strictEqual(0x3f42, data.readUInt16LE(2));
+
+  data[0] = 0xfe;
+  data[1] = 0xfe;
+  assert.strictEqual(0xfefe, data.readUInt16BE(0));
+  assert.strictEqual(0xfefe, data.readUInt16LE(0));
+}
+
+// Test 32 bit unsigned integers
+{
+  const data = Buffer.from([0x32, 0x65, 0x42, 0x56, 0x23, 0xff]);
+  assert.strictEqual(0x32654256, data.readUInt32BE(0));
+  assert.strictEqual(0x65425623, data.readUInt32BE(1));
+  assert.strictEqual(0x425623ff, data.readUInt32BE(2));
+  assert.strictEqual(0x56426532, data.readUInt32LE(0));
+  assert.strictEqual(0x23564265, data.readUInt32LE(1));
+  assert.strictEqual(0xff235642, data.readUInt32LE(2));
+}
+
+// Test UInt
+{
+  const buffer = Buffer.from([0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08]);
+
+  assert.strictEqual(buffer.readUIntLE(0), 0x01);
+  assert.strictEqual(buffer.readUIntLE(0, 1), 0x01);
+  assert.strictEqual(buffer.readUIntBE(0), 0x01);
+  assert.strictEqual(buffer.readUIntBE(0, 1), 0x01);
+  assert.strictEqual(buffer.readUIntLE(0, 3), 0x030201);
+  assert.strictEqual(buffer.readUIntBE(0, 3), 0x010203);
+  assert.strictEqual(buffer.readUIntLE(0, 5), 0x0504030201);
+  assert.strictEqual(buffer.readUIntBE(0, 5), 0x0102030405);
+  assert.strictEqual(buffer.readUIntLE(0, 6), 0x060504030201);
+  assert.strictEqual(buffer.readUIntBE(0, 6), 0x010203040506);
+  assert.strictEqual(buffer.readUIntLE(1, 6), 0x070605040302);
+  assert.strictEqual(buffer.readUIntBE(1, 6), 0x020304050607);
+  assert.strictEqual(buffer.readUIntLE(2, 6), 0x080706050403);
+  assert.strictEqual(buffer.readUIntBE(2, 6), 0x030405060708);
+
+  // Check byteLength.
+  ['readUIntBE', 'readUIntLE'].forEach((fn) => {
+    ['', '0', null, {}, [], () => {}, true, false].forEach((len) => {
+      assert.throws(
+        () => buffer[fn](0, len),
+        { code: 'ERR_INVALID_ARG_TYPE' });
+    });
+
+    [Infinity, -1].forEach((byteLength) => {
+      assert.throws(
+        () => buffer[fn](0, byteLength),
+        {
+          code: 'ERR_OUT_OF_RANGE',
+          message: 'The value of "byteLength" is out of range. ' +
+                   `It must be >= 1 and <= 6. Received ${byteLength}`
+        });
+    });
+
+    [NaN, 1.01].forEach((byteLength) => {
+      assert.throws(
+        () => buffer[fn](0, byteLength),
+        {
+          code: 'ERR_OUT_OF_RANGE',
+          name: 'RangeError [ERR_OUT_OF_RANGE]',
+          message: 'The value of "byteLength" is out of range. ' +
+                   `It must be an integer. Received ${byteLength}`
+        });
+    });
+  });
+
+  // Test 1 to 6 bytes.
+  for (let i = 1; i < 6; i++) {
+    ['readUIntBE', 'readUIntLE'].forEach((fn) => {
+      ['', '0', null, {}, [], () => {}, true, false].forEach((o) => {
+        assert.throws(
+          () => buffer[fn](o, i),
+          {
+            code: 'ERR_INVALID_ARG_TYPE',
+            name: 'TypeError [ERR_INVALID_ARG_TYPE]'
+          });
+      });
+
+      [Infinity, -1, -4294967295].forEach((offset) => {
+        assert.throws(
+          () => buffer[fn](offset, i),
+          {
+            code: 'ERR_OUT_OF_RANGE',
+            name: 'RangeError [ERR_OUT_OF_RANGE]',
+            message: 'The value of "offset" is out of range. ' +
+                     `It must be >= 0 and <= ${8 - i}. Received ${offset}`
+          });
+      });
+
+      [NaN, 1.01].forEach((offset) => {
+        assert.throws(
+          () => buffer[fn](offset, i),
+          {
+            code: 'ERR_OUT_OF_RANGE',
+            name: 'RangeError [ERR_OUT_OF_RANGE]',
+            message: 'The value of "offset" is out of range. ' +
+                     `It must be an integer. Received ${offset}`
+          });
+      });
+    });
+  }
+}