Add gdb pretty printers for a wide variety of libc++ data structures (take 2).

Summary:
This patch is an exact duplicate of https://reviews.llvm.org/D65609, except
that it uses the newly introduced testing framework to detect if gdb is present
so that the tests won't fail on machines without gdb.

Reviewers: echristo, EricWF

Subscribers: christof, ldionne, llvm-commits

Tags: #llvm

Differential Revision: https://reviews.llvm.org/D67238

llvm-svn: 371131

2 files changed, 744 insertions, 0 deletions

diff --git a/libcxx/test/pretty_printers/gdb_pretty_printer_test.py b/libcxx/test/pretty_printers/gdb_pretty_printer_test.py
new file mode 100644
index 00000000000..5e425688734
--- /dev/null
+++ b/libcxx/test/pretty_printers/gdb_pretty_printer_test.py
@@ -0,0 +1,112 @@
+#===----------------------------------------------------------------------===##
+#
+# 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
+#
+#===----------------------------------------------------------------------===##
+"""Commands used to automate testing gdb pretty printers.
+
+This script is part of a larger framework to test gdb pretty printers. It
+runs the program, detects test cases, checks them, and prints results.
+
+See gdb_pretty_printer_test.sh.cpp on how to write a test case.
+
+"""
+
+from __future__ import print_function
+import re
+import gdb
+
+test_failures = 0
+
+
+class CheckResult(gdb.Command):
+
+    def __init__(self):
+        super(CheckResult, self).__init__(
+            "print_and_compare", gdb.COMMAND_DATA)
+
+    def invoke(self, arg, from_tty):
+        try:
+            # Stack frame is:
+            # 0. StopForDebugger
+            # 1. ComparePrettyPrintToChars or ComparePrettyPrintToRegex
+            # 2. TestCase
+            compare_frame = gdb.newest_frame().older()
+            testcase_frame = compare_frame.older()
+            test_loc = testcase_frame.find_sal()
+            # Use interactive commands in the correct context to get the pretty
+            # printed version
+
+            value_str = self._get_value_string(compare_frame, testcase_frame)
+
+            # Ignore the convenience variable name and newline
+            value = value_str[value_str.find("= ") + 2:-1]
+            gdb.newest_frame().select()
+
+            expectation_val = compare_frame.read_var("expectation")
+            if "PrettyPrintToRegex" in compare_frame.name():
+                check_literal = expectation_val.string()
+                test_fails = not re.match(check_literal, value)
+            else:
+                check_literal_string = expectation_val.string(encoding="utf-8")
+                check_literal = check_literal_string.encode("utf-8")
+                test_fails = value != check_literal
+
+            if test_fails:
+                global test_failures
+                print("FAIL: " + test_loc.symtab.filename +
+                      ":" + str(test_loc.line))
+                print("GDB printed:")
+                print("   " + value)
+                print("Value should match:")
+                print("   " + check_literal)
+                test_failures += 1
+            else:
+                print("PASS: " + test_loc.symtab.filename +
+                      ":" + str(test_loc.line))
+
+        except RuntimeError as e:
+            # At this point, lots of different things could be wrong, so don't try to
+            # recover or figure it out. Don't exit either, because then it's
+            # impossible debug the framework itself.
+            print("FAIL: Something is wrong in the test framework.")
+            print(str(e))
+            test_failures += 1
+
+    def _get_value_string(self, compare_frame, testcase_frame):
+        compare_frame.select()
+        if "ComparePrettyPrint" in compare_frame.name():
+            return gdb.execute("p value", to_string=True)
+        value_str = str(compare_frame.read_var("value"))
+        clean_expression_str = value_str.strip("'\"")
+        testcase_frame.select()
+        return gdb.execute("p " + clean_expression_str, to_string=True)
+
+
+def exit_handler(event=None):
+    global test_failures
+    if test_failures:
+        print("FAILED %d cases" % test_failures)
+    exit(test_failures)
+
+
+# Start code executed at load time
+
+# Disable terminal paging
+gdb.execute("set height 0")
+gdb.execute("set python print-stack full")
+test_failures = 0
+CheckResult()
+test_bp = gdb.Breakpoint("StopForDebugger")
+test_bp.enabled = True
+test_bp.silent = True
+test_bp.commands = "print_and_compare\ncontinue"
+# "run" won't return if the program exits; ensure the script regains control.
+gdb.events.exited.connect(exit_handler)
+gdb.execute("run")
+# If the program didn't exit, something went wrong, but we don't
+# know what. Fail on exit.
+test_failures += 1
+exit_handler(None)
diff --git a/libcxx/test/pretty_printers/gdb_pretty_printer_test.sh.cpp b/libcxx/test/pretty_printers/gdb_pretty_printer_test.sh.cpp
new file mode 100644
index 00000000000..0b32ef8437a
--- /dev/null
+++ b/libcxx/test/pretty_printers/gdb_pretty_printer_test.sh.cpp
@@ -0,0 +1,632 @@
+// -*- 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
+//
+//===----------------------------------------------------------------------===//
+// UNSUPPORTED: system-windows
+// REQUIRES: libcxx_gdb
+//
+// RUN: %cxx %flags %s -o %t.exe %compile_flags -g %link_flags
+// Ensure locale-independence for unicode tests.
+// RUN: %libcxx_gdb -nx -batch -iex "set autoload off" -ex "source %libcxx_src_root/utils/gdb/libcxx/printers.py" -ex "python register_libcxx_printer_loader()" -ex "source %libcxx_src_root/test/pretty_printers/gdb_pretty_printer_test.py" %t.exe
+
+#include <bitset>
+#include <deque>
+#include <list>
+#include <map>
+#include <memory>
+#include <queue>
+#include <set>
+#include <sstream>
+#include <stack>
+#include <string>
+#include <tuple>
+#include <unordered_map>
+#include <unordered_set>
+
+// To write a pretty-printer test:
+//
+// 1. Declare a variable of the type you want to test
+//
+// 2. Set its value to something which will test the pretty printer in an
+//    interesting way.
+//
+// 3. Call ComparePrettyPrintToChars with that variable, and a "const char*"
+//    value to compare to the printer's output.
+//
+//    Or
+//
+//    Call ComparePrettyPrintToChars with that variable, and a "const char*"
+//    *python* regular expression to match against the printer's output.
+//    The set of special characters in a Python regular expression overlaps
+//    with a lot of things the pretty printers print--brackets, for
+//    example--so take care to escape appropriately.
+//
+// Alternatively, construct a string that gdb can parse as an expression,
+// so that printing the value of the expression will test the pretty printer
+// in an interesting way. Then, call CompareExpressionPrettyPrintToChars or
+// CompareExpressionPrettyPrintToRegex to compare the printer's output.
+
+// Avoids setting a breakpoint in every-single instantiation of
+// ComparePrettyPrintTo*.  Also, make sure neither it, nor the
+// variables we need present in the Compare functions are optimized
+// away.
+void StopForDebugger(void *value, void *check) __attribute__((optnone)) { }
+
+// Prevents the compiler optimizing away the parameter in the caller function.
+template <typename Type>
+void MarkAsLive(Type &&t) __attribute__((optnone)) { }
+
+// In all of the Compare(Expression)PrettyPrintTo(Regex/Chars) functions below,
+// the python script sets a breakpoint just before the call to StopForDebugger,
+// compares the result to the expectation.
+//
+// The expectation is a literal string to be matched exactly in
+// *PrettyPrintToChars functions, and is a python regular expression in
+// *PrettyPrintToRegex functions.
+//
+// In ComparePrettyPrint* functions, the value is a variable of any type. In
+// CompareExpressionPrettyPrint functions, the value is a string expression that
+// gdb will parse and print the result.
+//
+// The python script will print either "PASS", or a detailed failure explanation
+// along with the line that has invoke the function. The testing will continue
+// in either case.
+
+template <typename TypeToPrint> void ComparePrettyPrintToChars(
+    TypeToPrint value,
+    const char *expectation) {
+  StopForDebugger(&value, &expectation);
+}
+
+template <typename TypeToPrint> void ComparePrettyPrintToRegex(
+    TypeToPrint value,
+    const char *expectation) {
+  StopForDebugger(&value, &expectation);
+}
+
+void CompareExpressionPrettyPrintToChars(
+    std::string value,
+    const char *expectation) {
+  StopForDebugger(&value, &expectation);
+}
+
+void CompareExpressionPrettyPrintToRegex(
+    std::string value,
+    const char *expectation) {
+  StopForDebugger(&value, &expectation);
+}
+
+namespace example {
+  struct example_struct {
+    int a = 0;
+    int arr[1000];
+  };
+}
+
+// If enabled, the self test will "fail"--because we want to be sure it properly
+// diagnoses tests that *should* fail. Evaluate the output by hand.
+void framework_self_test() {
+#ifdef FRAMEWORK_SELF_TEST
+  // Use the most simple data structure we can.
+  const char a = 'a';
+
+  // Tests that should pass
+  ComparePrettyPrintToChars(a, "97 'a'");
+  ComparePrettyPrintToRegex(a, ".*");
+
+  // Tests that should fail.
+  ComparePrettyPrintToChars(a, "b");
+  ComparePrettyPrintToRegex(a, "b");
+#endif
+}
+
+// A simple pass-through allocator to check that we handle CompressedPair
+// correctly.
+template <typename T> class UncompressibleAllocator : public std::allocator<T> {
+ public:
+  char X;
+};
+
+void string_test() {
+  std::string short_string("kdjflskdjf");
+  // The display_hint "string" adds quotes the printed result.
+  ComparePrettyPrintToChars(short_string, "\"kdjflskdjf\"");
+
+  std::basic_string<char, std::char_traits<char>, UncompressibleAllocator<char>>
+      long_string("mehmet bizim dostumuz agzi kirik testimiz");
+  ComparePrettyPrintToChars(long_string,
+                            "\"mehmet bizim dostumuz agzi kirik testimiz\"");
+}
+
+void u16string_test() {
+  std::u16string test0 = u"Hello World";
+  ComparePrettyPrintToChars(test0, "u\"Hello World\"");
+  std::u16string test1 = u"\U00010196\u20AC\u00A3\u0024";
+  ComparePrettyPrintToChars(test1, "u\"\U00010196\u20AC\u00A3\u0024\"");
+  std::u16string test2 = u"\u0024\u0025\u0026\u0027";
+  ComparePrettyPrintToChars(test2, "u\"\u0024\u0025\u0026\u0027\"");
+  std::u16string test3 = u"mehmet bizim dostumuz agzi kirik testimiz";
+  ComparePrettyPrintToChars(test3,
+                            ("u\"mehmet bizim dostumuz agzi kirik testimiz\""));
+}
+
+void u32string_test() {
+  std::u32string test0 = U"Hello World";
+  ComparePrettyPrintToChars(test0, "U\"Hello World\"");
+  std::u32string test1 =
+      U"\U0001d552\U0001d553\U0001d554\U0001d555\U0001d556\U0001d557";
+  ComparePrettyPrintToChars(
+      test1,
+      ("U\"\U0001d552\U0001d553\U0001d554\U0001d555\U0001d556\U0001d557\""));
+  std::u32string test2 = U"\U00004f60\U0000597d";
+  ComparePrettyPrintToChars(test2, ("U\"\U00004f60\U0000597d\""));
+  std::u32string test3 = U"mehmet bizim dostumuz agzi kirik testimiz";
+  ComparePrettyPrintToChars(test3, ("U\"mehmet bizim dostumuz agzi kirik testimiz\""));
+}
+
+void tuple_test() {
+  std::tuple<int, int, int> test0(2, 3, 4);
+  ComparePrettyPrintToChars(
+      test0,
+      "std::tuple containing = {[1] = 2, [2] = 3, [3] = 4}");
+
+  std::tuple<> test1;
+  ComparePrettyPrintToChars(
+      test1,
+      "empty std::tuple");
+}
+
+void unique_ptr_test() {
+  std::unique_ptr<std::string> matilda(new std::string("Matilda"));
+  ComparePrettyPrintToRegex(
+      std::move(matilda),
+      R"(std::unique_ptr<std::string> containing = {__ptr_ = 0x[a-f0-9]+})");
+  std::unique_ptr<int> forty_two(new int(42));
+  ComparePrettyPrintToRegex(std::move(forty_two),
+      R"(std::unique_ptr<int> containing = {__ptr_ = 0x[a-f0-9]+})");
+
+  std::unique_ptr<int> this_is_null;
+  ComparePrettyPrintToChars(std::move(this_is_null),
+      R"(std::unique_ptr is nullptr)");
+}
+
+void bitset_test() {
+  std::bitset<258> i_am_empty(0);
+  ComparePrettyPrintToChars(i_am_empty, "std::bitset<258>");
+
+  std::bitset<0> very_empty;
+  ComparePrettyPrintToChars(very_empty, "std::bitset<0>");
+
+  std::bitset<15> b_000001111111100(1020);
+  ComparePrettyPrintToChars(b_000001111111100,
+      "std::bitset<15> = {[2] = 1, [3] = 1, [4] = 1, [5] = 1, [6] = 1, "
+      "[7] = 1, [8] = 1, [9] = 1}");
+
+  std::bitset<258> b_0_129_132(0);
+  b_0_129_132[0] = true;
+  b_0_129_132[129] = true;
+  b_0_129_132[132] = true;
+  ComparePrettyPrintToChars(b_0_129_132,
+      "std::bitset<258> = {[0] = 1, [129] = 1, [132] = 1}");
+}
+
+void list_test() {
+  std::list<int> i_am_empty{};
+  ComparePrettyPrintToChars(i_am_empty, "std::list is empty");
+
+  std::list<int> one_two_three {1, 2, 3};
+  ComparePrettyPrintToChars(one_two_three,
+      "std::list with 3 elements = {1, 2, 3}");
+
+  std::list<std::string> colors {"red", "blue", "green"};
+  ComparePrettyPrintToChars(colors,
+      R"(std::list with 3 elements = {"red", "blue", "green"})");
+}
+
+void deque_test() {
+  std::deque<int> i_am_empty{};
+  ComparePrettyPrintToChars(i_am_empty, "std::deque is empty");
+
+  std::deque<int> one_two_three {1, 2, 3};
+  ComparePrettyPrintToChars(one_two_three,
+      "std::deque with 3 elements = {1, 2, 3}");
+
+  std::deque<example::example_struct> bfg;
+  for (int i = 0; i < 10; ++i) {
+    example::example_struct current;
+    current.a = i;
+    bfg.push_back(current);
+  }
+  for (int i = 0; i < 3; ++i) {
+    bfg.pop_front();
+  }
+  for (int i = 0; i < 3; ++i) {
+    bfg.pop_back();
+  }
+  ComparePrettyPrintToRegex(bfg,
+      "std::deque with 4 elements = {"
+      "{a = 3, arr = {[^}]+}}, "
+      "{a = 4, arr = {[^}]+}}, "
+      "{a = 5, arr = {[^}]+}}, "
+      "{a = 6, arr = {[^}]+}}}");
+}
+
+void map_test() {
+  std::map<int, int> i_am_empty{};
+  ComparePrettyPrintToChars(i_am_empty, "std::map is empty");
+
+  std::map<int, std::string> one_two_three;
+  one_two_three.insert({1, "one"});
+  one_two_three.insert({2, "two"});
+  one_two_three.insert({3, "three"});
+  ComparePrettyPrintToChars(one_two_three,
+      "std::map with 3 elements = "
+      R"({[1] = "one", [2] = "two", [3] = "three"})");
+
+  std::map<int, example::example_struct> bfg;
+  for (int i = 0; i < 4; ++i) {
+    example::example_struct current;
+    current.a = 17 * i;
+    bfg.insert({i, current});
+  }
+  ComparePrettyPrintToRegex(bfg,
+      R"(std::map with 4 elements = {)"
+      R"(\[0\] = {a = 0, arr = {[^}]+}}, )"
+      R"(\[1\] = {a = 17, arr = {[^}]+}}, )"
+      R"(\[2\] = {a = 34, arr = {[^}]+}}, )"
+      R"(\[3\] = {a = 51, arr = {[^}]+}}})");
+}
+
+void multimap_test() {
+  std::multimap<int, int> i_am_empty{};
+  ComparePrettyPrintToChars(i_am_empty, "std::multimap is empty");
+
+  std::multimap<int, std::string> one_two_three;
+  one_two_three.insert({1, "one"});
+  one_two_three.insert({3, "three"});
+  one_two_three.insert({1, "ein"});
+  one_two_three.insert({2, "two"});
+  one_two_three.insert({2, "zwei"});
+  one_two_three.insert({1, "bir"});
+
+  ComparePrettyPrintToChars(one_two_three,
+      "std::multimap with 6 elements = "
+      R"({[1] = "one", [1] = "ein", [1] = "bir", )"
+      R"([2] = "two", [2] = "zwei", [3] = "three"})");
+}
+
+void queue_test() {
+  std::queue<int> i_am_empty;
+  ComparePrettyPrintToChars(i_am_empty,
+      "std::queue wrapping = {std::deque is empty}");
+
+  std::queue<int> one_two_three(std::deque<int>{1, 2, 3});
+    ComparePrettyPrintToChars(one_two_three,
+        "std::queue wrapping = {"
+        "std::deque with 3 elements = {1, 2, 3}}");
+}
+
+void priority_queue_test() {
+  std::priority_queue<int> i_am_empty;
+  ComparePrettyPrintToChars(i_am_empty,
+      "std::priority_queue wrapping = {std::vector of length 0, capacity 0}");
+
+  std::priority_queue<int> one_two_three;
+  one_two_three.push(11111);
+  one_two_three.push(22222);
+  one_two_three.push(33333);
+
+  ComparePrettyPrintToRegex(one_two_three,
+      R"(std::priority_queue wrapping = )"
+      R"({std::vector of length 3, capacity 3 = {33333)");
+
+  ComparePrettyPrintToRegex(one_two_three, ".*11111.*");
+  ComparePrettyPrintToRegex(one_two_three, ".*22222.*");
+}
+
+void set_test() {
+  std::set<int> i_am_empty;
+  ComparePrettyPrintToChars(i_am_empty, "std::set is empty");
+
+  std::set<int> one_two_three {3, 1, 2};
+  ComparePrettyPrintToChars(one_two_three,
+      "std::set with 3 elements = {1, 2, 3}");
+
+  std::set<std::pair<int, int>> prime_pairs {
+      std::make_pair(3, 5), std::make_pair(5, 7), std::make_pair(3, 5)};
+
+  ComparePrettyPrintToChars(prime_pairs,
+      "std::set with 2 elements = {"
+      "{first = 3, second = 5}, {first = 5, second = 7}}");
+}
+
+void stack_test() {
+  std::stack<int> test0;
+  ComparePrettyPrintToChars(test0,
+                            "std::stack wrapping = {std::deque is empty}");
+  test0.push(5);
+  test0.push(6);
+  ComparePrettyPrintToChars(
+      test0, "std::stack wrapping = {std::deque with 2 elements = {5, 6}}");
+  std::stack<bool> test1;
+  test1.push(true);
+  test1.push(false);
+  ComparePrettyPrintToChars(
+      test1,
+      "std::stack wrapping = {std::deque with 2 elements = {true, false}}");
+
+  std::stack<std::string> test2;
+  test2.push("Hello");
+  test2.push("World");
+  ComparePrettyPrintToChars(test2,
+                            "std::stack wrapping = {std::deque with 2 elements "
+                            "= {\"Hello\", \"World\"}}");
+}
+
+void multiset_test() {
+  std::multiset<int> i_am_empty;
+  ComparePrettyPrintToChars(i_am_empty, "std::multiset is empty");
+
+  std::multiset<std::string> one_two_three {"1:one", "2:two", "3:three", "1:one"};
+  ComparePrettyPrintToChars(one_two_three,
+      "std::multiset with 4 elements = {"
+      R"("1:one", "1:one", "2:two", "3:three"})");
+}
+
+void vector_test() {
+  std::vector<bool> test0 = {true, false};
+  ComparePrettyPrintToChars(test0,
+                            "std::vector<bool> of "
+                            "length 2, capacity 64 = {1, 0}");
+  for (int i = 0; i < 31; ++i) {
+    test0.push_back(true);
+    test0.push_back(false);
+  }
+  ComparePrettyPrintToRegex(
+      test0,
+      "std::vector<bool> of length 64, "
+      "capacity 64 = {1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, "
+      "0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, "
+      "0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0}");
+  test0.push_back(true);
+  ComparePrettyPrintToRegex(
+      test0,
+      "std::vector<bool> of length 65, "
+      "capacity 128 = {1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, "
+      "1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, "
+      "1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1}");
+
+  std::vector<int> test1;
+  ComparePrettyPrintToChars(test1, "std::vector of length 0, capacity 0");
+
+  std::vector<int> test2 = {5, 6, 7};
+  ComparePrettyPrintToChars(test2,
+                            "std::vector of length "
+                            "3, capacity 3 = {5, 6, 7}");
+
+  std::vector<int, UncompressibleAllocator<int>> test3({7, 8});
+  ComparePrettyPrintToChars(std::move(test3),
+                            "std::vector of length "
+                            "2, capacity 2 = {7, 8}");
+}
+
+void set_iterator_test() {
+  std::set<int> one_two_three {1111, 2222, 3333};
+  auto it = one_two_three.find(2222);
+  MarkAsLive(it);
+  CompareExpressionPrettyPrintToRegex("it",
+      R"(std::__tree_const_iterator  = {\[0x[a-f0-9]+\] = 2222})");
+
+  auto not_found = one_two_three.find(1234);
+  MarkAsLive(not_found);
+  // Because the end_node is not easily detected, just be sure it doesn't crash.
+  CompareExpressionPrettyPrintToRegex("not_found",
+      R"(std::__tree_const_iterator  = {\[0x[a-f0-9]+\] = .*})");
+}
+
+void map_iterator_test() {
+  std::map<int, std::string> one_two_three;
+  one_two_three.insert({1, "one"});
+  one_two_three.insert({2, "two"});
+  one_two_three.insert({3, "three"});
+  auto it = one_two_three.begin();
+  MarkAsLive(it);
+  CompareExpressionPrettyPrintToRegex("it",
+      R"(std::__map_iterator  = )"
+      R"({\[0x[a-f0-9]+\] = {first = 1, second = "one"}})");
+
+  auto not_found = one_two_three.find(7);
+  MarkAsLive(not_found);
+  CompareExpressionPrettyPrintToRegex("not_found",
+      R"(std::__map_iterator  = {\[0x[a-f0-9]+\] =  end\(\)})");
+}
+
+void unordered_set_test() {
+  std::unordered_set<int> i_am_empty;
+  ComparePrettyPrintToChars(i_am_empty, "std::unordered_set is empty");
+
+  std::unordered_set<int> numbers {12345, 67890, 222333, 12345};
+  numbers.erase(numbers.find(222333));
+  ComparePrettyPrintToRegex(numbers, "std::unordered_set with 2 elements = ");
+  ComparePrettyPrintToRegex(numbers, ".*12345.*");
+  ComparePrettyPrintToRegex(numbers, ".*67890.*");
+
+  std::unordered_set<std::string> colors {"red", "blue", "green"};
+  ComparePrettyPrintToRegex(colors, "std::unordered_set with 3 elements = ");
+  ComparePrettyPrintToRegex(colors, R"(.*"red".*)");
+  ComparePrettyPrintToRegex(colors, R"(.*"blue".*)");
+  ComparePrettyPrintToRegex(colors, R"(.*"green".*)");
+}
+
+void unordered_multiset_test() {
+  std::unordered_multiset<int> i_am_empty;
+  ComparePrettyPrintToChars(i_am_empty, "std::unordered_multiset is empty");
+
+  std::unordered_multiset<int> numbers {12345, 67890, 222333, 12345};
+  ComparePrettyPrintToRegex(numbers,
+                            "std::unordered_multiset with 4 elements = ");
+  ComparePrettyPrintToRegex(numbers, ".*12345.*12345.*");
+  ComparePrettyPrintToRegex(numbers, ".*67890.*");
+  ComparePrettyPrintToRegex(numbers, ".*222333.*");
+
+  std::unordered_multiset<std::string> colors {"red", "blue", "green", "red"};
+  ComparePrettyPrintToRegex(colors,
+                            "std::unordered_multiset with 4 elements = ");
+  ComparePrettyPrintToRegex(colors, R"(.*"red".*"red".*)");
+  ComparePrettyPrintToRegex(colors, R"(.*"blue".*)");
+  ComparePrettyPrintToRegex(colors, R"(.*"green".*)");
+}
+
+void unordered_map_test() {
+  std::unordered_map<int, int> i_am_empty;
+  ComparePrettyPrintToChars(i_am_empty, "std::unordered_map is empty");
+
+  std::unordered_map<int, std::string> one_two_three;
+  one_two_three.insert({1, "one"});
+  one_two_three.insert({2, "two"});
+  one_two_three.insert({3, "three"});
+  ComparePrettyPrintToRegex(one_two_three,
+                            "std::unordered_map with 3 elements = ");
+  ComparePrettyPrintToRegex(one_two_three, R"(.*\[1\] = "one".*)");
+  ComparePrettyPrintToRegex(one_two_three, R"(.*\[2\] = "two".*)");
+  ComparePrettyPrintToRegex(one_two_three, R"(.*\[3\] = "three".*)");
+}
+
+void unordered_multimap_test() {
+  std::unordered_multimap<int, int> i_am_empty;
+  ComparePrettyPrintToChars(i_am_empty, "std::unordered_multimap is empty");
+
+  std::unordered_multimap<int, std::string> one_two_three;
+  one_two_three.insert({1, "one"});
+  one_two_three.insert({2, "two"});
+  one_two_three.insert({3, "three"});
+  one_two_three.insert({2, "two"});
+  ComparePrettyPrintToRegex(one_two_three,
+                            "std::unordered_multimap with 4 elements = ");
+  ComparePrettyPrintToRegex(one_two_three, R"(.*\[1\] = "one".*)");
+  ComparePrettyPrintToRegex(one_two_three, R"(.*\[2\] = "two".*\[2\] = "two")");
+  ComparePrettyPrintToRegex(one_two_three, R"(.*\[3\] = "three".*)");
+}
+
+void unordered_map_iterator_test() {
+  std::unordered_map<int, int> ones_to_eights;
+  ones_to_eights.insert({1, 8});
+  ones_to_eights.insert({11, 88});
+  ones_to_eights.insert({111, 888});
+
+  auto ones_to_eights_begin = ones_to_eights.begin();
+  MarkAsLive(ones_to_eights_begin);
+  CompareExpressionPrettyPrintToRegex("ones_to_eights_begin",
+      R"(std::__hash_map_iterator  = {\[1+\] = 8+})");
+
+  auto not_found = ones_to_eights.find(5);
+  MarkAsLive(not_found);
+  CompareExpressionPrettyPrintToRegex("not_found",
+      R"(std::__hash_map_iterator = end\(\))");
+}
+
+void unordered_set_iterator_test() {
+  std::unordered_set<int> ones;
+  ones.insert(111);
+  ones.insert(1111);
+  ones.insert(11111);
+
+  auto ones_begin = ones.begin();
+  MarkAsLive(ones_begin);
+  CompareExpressionPrettyPrintToRegex("ones_begin",
+      R"(std::__hash_const_iterator  = {1+})");
+
+  auto not_found = ones.find(5);
+  MarkAsLive(not_found);
+  CompareExpressionPrettyPrintToRegex("not_found",
+      R"(std::__hash_const_iterator = end\(\))");
+}
+
+// Check that libc++ pretty printers do not handle pointers.
+void pointer_negative_test() {
+  int abc = 123;
+  int *int_ptr = &abc;
+  // Check that the result is equivalent to "p/r int_ptr" command.
+  ComparePrettyPrintToRegex(int_ptr, R"(\(int \*\) 0x[a-f0-9]+)");
+}
+
+void shared_ptr_test() {
+  // Shared ptr tests while using test framework call another function
+  // due to which there is one more count for the pointer. Hence, all the
+  // following tests are testing with expected count plus 1.
+  std::shared_ptr<const int> test0 = std::make_shared<const int>(5);
+  ComparePrettyPrintToRegex(
+      test0,
+      R"(std::shared_ptr<int> count 2, weak 0 containing = {__ptr_ = 0x[a-f0-9]+})");
+
+  std::shared_ptr<const int> test1(test0);
+  ComparePrettyPrintToRegex(
+      test1,
+      R"(std::shared_ptr<int> count 3, weak 0 containing = {__ptr_ = 0x[a-f0-9]+})");
+
+  {
+    std::weak_ptr<const int> test2 = test1;
+    ComparePrettyPrintToRegex(
+        test0,
+        R"(std::shared_ptr<int> count 3, weak 1 containing = {__ptr_ = 0x[a-f0-9]+})");
+  }
+
+  ComparePrettyPrintToRegex(
+      test0,
+      R"(std::shared_ptr<int> count 3, weak 0 containing = {__ptr_ = 0x[a-f0-9]+})");
+
+  std::shared_ptr<const int> test3;
+  ComparePrettyPrintToChars(test3, "std::shared_ptr is nullptr");
+}
+
+void streampos_test() {
+  std::streampos test0 = 67;
+  ComparePrettyPrintToChars(
+      test0, "std::fpos with stream offset:67 with state: {count:0 value:0}");
+  std::istringstream input("testing the input stream here");
+  std::streampos test1 = input.tellg();
+  ComparePrettyPrintToChars(
+      test1, "std::fpos with stream offset:0 with state: {count:0 value:0}");
+  std::unique_ptr<char[]> buffer(new char[5]);
+  input.read(buffer.get(), 5);
+  test1 = input.tellg();
+  ComparePrettyPrintToChars(
+      test1, "std::fpos with stream offset:5 with state: {count:0 value:0}");
+}
+
+int main(int argc, char* argv[]) {
+  framework_self_test();
+
+  string_test();
+
+  u32string_test();
+  tuple_test();
+  unique_ptr_test();
+  shared_ptr_test();
+  bitset_test();
+  list_test();
+  deque_test();
+  map_test();
+  multimap_test();
+  queue_test();
+  priority_queue_test();
+  stack_test();
+  set_test();
+  multiset_test();
+  vector_test();
+  set_iterator_test();
+  map_iterator_test();
+  unordered_set_test();
+  unordered_multiset_test();
+  unordered_map_test();
+  unordered_multimap_test();
+  unordered_map_iterator_test();
+  unordered_set_iterator_test();
+  pointer_negative_test();
+  streampos_test();
+  return 0;
+}