1 files changed, 117 insertions, 0 deletions
diff --git a/src/test/common/test_sloppy_crc_map.cc b/src/test/common/test_sloppy_crc_map.cc
new file mode 100644
index 000000000..3eb855130
--- /dev/null
+++ b/src/test/common/test_sloppy_crc_map.cc
@@ -0,0 +1,117 @@
+// -*- mode:C++; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*-
+// vim: ts=8 sw=2 smarttab
+
+#include <iostream>
+
+#include "common/SloppyCRCMap.h"
+#include "common/Formatter.h"
+#include <gtest/gtest.h>
+
+using namespace std;
+
+void dump(const SloppyCRCMap& scm)
+{
+  Formatter *f = Formatter::create("json-pretty");
+  f->open_object_section("map");
+  scm.dump(f);
+  f->close_section();
+  f->flush(cout);
+  delete f;
+}
+
+TEST(SloppyCRCMap, basic) {
+  SloppyCRCMap scm(4);
+
+  bufferlist a, b;
+  a.append("The quick brown fox jumped over a fence whose color I forget.");
+  b.append("asdf");
+
+  scm.write(0, a.length(), a);
+  if (0)
+    dump(scm);
+  ASSERT_EQ(0, scm.read(0, a.length(), a, &cout));
+
+  scm.write(12, b.length(), b);
+  if (0)
+    dump(scm);
+
+  ASSERT_EQ(0, scm.read(12, b.length(), b, &cout));
+  ASSERT_EQ(1, scm.read(0, a.length(), a, &cout));
+}
+
+TEST(SloppyCRCMap, truncate) {
+  SloppyCRCMap scm(4);
+
+  bufferlist a, b;
+  a.append("asdf");
+  b.append("qwer");
+
+  scm.write(0, a.length(), a);
+  scm.write(4, a.length(), a);
+  ASSERT_EQ(0, scm.read(4, 4, a, &cout));
+  ASSERT_EQ(1, scm.read(4, 4, b, &cout));
+  scm.truncate(4);
+  ASSERT_EQ(0, scm.read(4, 4, b, &cout));
+}
+
+TEST(SloppyCRCMap, zero) {
+  SloppyCRCMap scm(4);
+
+  bufferlist a, b;
+  a.append("asdf");
+  b.append("qwer");
+
+  scm.write(0, a.length(), a);
+  scm.write(4, a.length(), a);
+  ASSERT_EQ(0, scm.read(4, 4, a, &cout));
+  ASSERT_EQ(1, scm.read(4, 4, b, &cout));
+  scm.zero(4, 4);
+  ASSERT_EQ(1, scm.read(4, 4, a, &cout));
+  ASSERT_EQ(1, scm.read(4, 4, b, &cout));
+
+  bufferptr bp(4);
+  bp.zero();
+  bufferlist c;
+  c.append(bp);
+  ASSERT_EQ(0, scm.read(0, 4, a, &cout));
+  ASSERT_EQ(0, scm.read(4, 4, c, &cout));
+  scm.zero(0, 15);
+  ASSERT_EQ(1, scm.read(0, 4, a, &cout));
+  ASSERT_EQ(0, scm.read(0, 4, c, &cout));
+}
+
+TEST(SloppyCRCMap, clone_range) {
+  SloppyCRCMap src(4);
+  SloppyCRCMap dst(4);
+
+  bufferlist a, b;
+  a.append("asdfghjkl");
+  b.append("qwertyui");
+
+  src.write(0, a.length(), a);
+  src.write(8, a.length(), a);
+  src.write(16, a.length(), a);
+
+  dst.write(0, b.length(), b);
+  dst.clone_range(0, 8, 0, src);
+  ASSERT_EQ(2, dst.read(0, 8, b, &cout));
+  ASSERT_EQ(0, dst.read(8, 8, b, &cout));
+
+  dst.write(16, b.length(), b);
+  ASSERT_EQ(2, dst.read(16, 8, a, &cout));
+  dst.clone_range(16, 8, 16, src);
+  ASSERT_EQ(0, dst.read(16, 8, a, &cout));
+
+  dst.write(16, b.length(), b);
+  ASSERT_EQ(1, dst.read(16, 4, a, &cout));
+  dst.clone_range(16, 8, 2, src);
+  ASSERT_EQ(0, dst.read(16, 4, a, &cout));
+
+  dst.write(0, b.length(), b);
+  dst.write(8, b.length(), b);
+  ASSERT_EQ(2, dst.read(0, 8, a, &cout));
+  ASSERT_EQ(2, dst.read(8, 8, a, &cout));
+  dst.clone_range(2, 8, 0, src);
+  ASSERT_EQ(0, dst.read(0, 8, a, &cout));
+  ASSERT_EQ(0, dst.read(8, 4, a, &cout));
+}