Start with copy of whiteboard

8 files changed, 1266 insertions, 0 deletions

diff --git a/tests/Makefile b/tests/Makefile
new file mode 100644
index 0000000..f3ec6c8
--- /dev/null
+++ b/tests/Makefile
@@ -0,0 +1,79 @@
+CXXFLAGS=-g -O0
+
+include ../common.mk
+
+ifeq ($(CXXTYPE),clang++)
+CXXFLAGS+=-fprofile-instr-generate -fcoverage-mapping
+LDFLAGS+=-fprofile-instr-generate -fcoverage-mapping
+else
+# GCC
+CXXFLAGS+=--coverage
+LDFLAGS+=--coverage
+endif
+
+UNITS=storage.cpp config.cpp compiledsql.cpp qrcode.cpp whiteboard.cpp connectionregistry.cpp diff.cpp
+
+UNITTESTS=test-config.cpp \
+	  test-storage.cpp \
+	  test-connectionregistry.cpp \
+	  test-compiledsql.cpp \
+	  test-qrcode.cpp \
+	  test-whiteboard.cpp \
+	  test-diff.cpp
+
+CXXFLAGS+=\
+         -I/usr/src/googletest/googletest/include \
+         -I/usr/src/googletest/googlemock/include \
+         -I/usr/src/googletest/googletest \
+         -I/usr/src/googletest/googlemock \
+         -I..
+
+test: unittests
+	# https://clang.llvm.org/docs/SourceBasedCodeCoverage.html
+ifeq ($(CXXTYPE),clang++)
+	LLVM_PROFILE_FILE="unittests.profraw" ./unittests
+	$(LLVMPROFDATA) merge -sparse unittests.profraw -o unittests.profdata
+	$(LLVMCOV) report --ignore-filename-regex='google' --ignore-filename-regex='test-' --ignore-filename-regex='Magick' --show-region-summary=0 -instr-profile unittests.profdata unittests
+else
+	./unittests
+	gcovr -r ..
+endif
+
+coverage:
+	$(LLVMCOV) show -instr-profile unittests.profdata $(UNITS:.cpp=.o)
+
+unittests: libgmock.a $(UNITTESTS:.cpp=.o) $(UNITS:.cpp=.o)
+	$(CXX) $(LDFLAGS) $^ $(LDLIBS) $(LIBS) -o $@
+
+%.o: %.cpp
+	$(CXX) $(CXXFLAGS) -o $@ -c $<
+
+config.o: ../config.cpp
+	$(CXX) $(CXXFLAGS) -o $@ -c $<
+
+connectionregistry.o: ../connectionregistry.cpp
+	$(CXX) $(CXXFLAGS) -o $@ -c $<
+
+diff.o: ../diff.cpp
+	$(CXX) $(CXXFLAGS) -o $@ -c $<
+
+storage.o: ../storage.cpp
+	$(CXX) $(CXXFLAGS) -o $@ -c $<
+
+compiledsql.o: ../compiledsql.cpp
+	$(CXX) $(CXXFLAGS) -o $@ -c $<
+
+whiteboard.o: ../whiteboard.cpp
+	$(CXX) $(CXXFLAGS) -o $@ -c $<
+
+qrcode.o: ../qrcode.cpp
+	$(CXX) $(CXXFLAGS) -o $@ -c $<
+
+libgmock.a:
+	$(CXX) $(CXXFLAGS) -c /usr/src/googletest/googletest/src/gtest-all.cc
+	$(CXX) $(CXXFLAGS) -c /usr/src/googletest/googlemock/src/gmock-all.cc
+	$(CXX) $(CXXFLAGS) -c /usr/src/googletest/googlemock/src/gmock_main.cc
+	ar -rv libgmock.a gmock-all.o gtest-all.o gmock_main.o
+
+clean:
+	-rm -f *.o *.a unittests *.gcda *.gcno *.profraw *.profdata *.gcov
diff --git a/tests/test-compiledsql.cpp b/tests/test-compiledsql.cpp
new file mode 100644
index 0000000..d14220c
--- /dev/null
+++ b/tests/test-compiledsql.cpp
@@ -0,0 +1,77 @@
+#include <gtest/gtest.h>
+
+#include <filesystem>
+#include <memory>
+#include <string>
+#include <system_error>
+
+#include "libreichwein/file.h"
+
+#include "config.h"
+#include "storage.h"
+#include "whiteboard.h"
+
+namespace fs = std::filesystem;
+
+namespace {
+ const std::string testDbFilename{"./whiteboard.db3"};
+}
+
+class CompiledSQLTest: public ::testing::Test
+{
+protected:
+ CompiledSQLTest(){
+ }
+
+ ~CompiledSQLTest() override{
+ }
+
+ void SetUp() override
+ {
+  std::error_code ec;
+  fs::remove(testDbFilename, ec);
+ }
+
+ void TearDown() override
+ {
+  std::error_code ec;
+  fs::remove(testDbFilename, ec);
+ }
+
+};
+
+TEST_F(CompiledSQLTest, create)
+{
+ SQLite::Database db{testDbFilename, SQLite::OPEN_READWRITE | SQLite::OPEN_CREATE};
+
+ {
+  CompiledSQL stmt1{db, "CREATE TABLE documents (id VARCHAR(16) PRIMARY KEY)"};
+  CompiledSQL::Guard g{stmt1};
+  stmt1.execute();
+ }
+
+ {
+  CompiledSQL stmt2{db, "INSERT INTO documents (id) values (?)"};
+  CompiledSQL::Guard g{stmt2};
+  stmt2.bind(1, "abc");
+  ASSERT_TRUE(stmt2.execute());
+ }
+
+ {
+  CompiledSQL stmt3{db, "SELECT id FROM documents WHERE id = ?"};
+  CompiledSQL::Guard g{stmt3};
+  stmt3.bind(1, "abc");
+  ASSERT_TRUE(stmt3.execute());
+  EXPECT_EQ(stmt3.getColumn<std::string>(0), "abc");
+ }
+
+ {
+  CompiledSQL stmt4{db, "SELECT id FROM documents WHERE id = ?"};
+  CompiledSQL::Guard g{stmt4};
+  stmt4.bind(1, "def");
+  ASSERT_FALSE(stmt4.execute());
+ }
+
+ EXPECT_TRUE(fs::exists(testDbFilename));
+}
+
diff --git a/tests/test-config.cpp b/tests/test-config.cpp
new file mode 100644
index 0000000..816dfea
--- /dev/null
+++ b/tests/test-config.cpp
@@ -0,0 +1,63 @@
+#include <gtest/gtest.h>
+
+#include <filesystem>
+#include <string>
+#include <system_error>
+
+#include "libreichwein/file.h"
+
+#include "config.h"
+
+namespace fs = std::filesystem;
+using namespace Reichwein;
+
+namespace {
+ const std::string testConfigFilename{"./test.conf"};
+ const std::string testDbFilename{"./whiteboard.db3"};
+}
+
+class ConfigTest: public ::testing::Test
+{
+protected:
+ ConfigTest(){
+ }
+
+ ~ConfigTest(){
+ }
+};
+
+TEST_F(ConfigTest, defaultData)
+{
+ std::string filename{testConfigFilename + "doesntexist"};
+ std::error_code ec;
+ fs::remove(filename, ec);
+ ASSERT_TRUE(!fs::exists(filename));
+ {
+  Config config{filename};
+  EXPECT_EQ(config.getDataPath(), "/var/lib/whiteboard");
+  EXPECT_EQ(config.getMaxage(), 0UL);
+  ASSERT_TRUE(!fs::exists(filename));
+ }
+ 
+ ASSERT_TRUE(!fs::exists(filename));
+}
+
+TEST_F(ConfigTest, testData)
+{
+ File::setFile(testConfigFilename, R"CONFIG(
+<config>
+ <datapath>/some/other/location</datapath>
+ <maxage>2592000</maxage>
+</config>
+)CONFIG");
+
+ {
+  Config config{testConfigFilename};
+  EXPECT_EQ(config.getDataPath(), "/some/other/location");
+  EXPECT_EQ(config.getMaxage(), 2592000UL);
+ }
+
+ std::error_code ec;
+ fs::remove(testConfigFilename, ec);
+}
+
diff --git a/tests/test-connectionregistry.cpp b/tests/test-connectionregistry.cpp
new file mode 100644
index 0000000..dbc2b7e
--- /dev/null
+++ b/tests/test-connectionregistry.cpp
@@ -0,0 +1,170 @@
+#include <gtest/gtest.h>
+
+#include <filesystem>
+#include <string>
+#include <system_error>
+
+#include <boost/beast/core.hpp>
+#include <boost/beast/http.hpp>
+
+#include "libreichwein/file.h"
+
+#include "connectionregistry.h"
+
+namespace fs = std::filesystem;
+using namespace Reichwein;
+
+class ConnectionRegistryTest: public ::testing::Test
+{
+protected:
+ ConnectionRegistryTest(){
+ }
+
+ ~ConnectionRegistryTest(){
+ }
+};
+
+TEST_F(ConnectionRegistryTest, constructor)
+{
+ ConnectionRegistry cr{};
+}
+
+TEST_F(ConnectionRegistryTest, test_addConnection)
+{
+ boost::asio::io_context ioc{1};
+
+ boost::asio::ip::tcp::socket ts0{ioc};
+ ConnectionRegistry::connection c0 {std::make_shared<ConnectionRegistry::connection::element_type>(std::move(ts0))};
+ 
+ boost::asio::ip::tcp::socket ts1{ioc};
+ ConnectionRegistry::connection c1 {std::make_shared<ConnectionRegistry::connection::element_type>(std::move(ts1))};
+ 
+ ConnectionRegistry cr{};
+
+ cr.addConnection(c0);
+ EXPECT_THROW(cr.addConnection(c0), std::exception);
+ cr.addConnection(c1);
+ EXPECT_THROW(cr.addConnection(c0), std::exception);
+ EXPECT_THROW(cr.addConnection(c1), std::exception);
+}
+
+TEST_F(ConnectionRegistryTest, test_delConnection)
+{
+ boost::asio::io_context ioc{1};
+
+ boost::asio::ip::tcp::socket ts0{ioc};
+ ConnectionRegistry::connection c0 {std::make_shared<ConnectionRegistry::connection::element_type>(std::move(ts0))};
+ 
+ boost::asio::ip::tcp::socket ts1{ioc};
+ ConnectionRegistry::connection c1 {std::make_shared<ConnectionRegistry::connection::element_type>(std::move(ts1))};
+ 
+ ConnectionRegistry cr{};
+
+ EXPECT_THROW(cr.delConnection(c0), std::exception);
+ 
+ cr.addConnection(c0);
+ cr.delConnection(c0);
+
+ cr.addConnection(c0);
+ cr.addConnection(c1);
+ cr.delConnection(c0);
+ EXPECT_THROW(cr.delConnection(c0), std::exception);
+ cr.delConnection(c1);
+ EXPECT_THROW(cr.delConnection(c1), std::exception);
+}
+
+TEST_F(ConnectionRegistryTest, test_setId)
+{
+ boost::asio::io_context ioc{1};
+ boost::asio::ip::tcp::socket ts{ioc};
+
+ ConnectionRegistry::connection c {std::make_shared<ConnectionRegistry::connection::element_type>(std::move(ts))};
+ 
+ ConnectionRegistry cr{};
+
+ EXPECT_THROW(cr.setId(c, "id1"), std::exception);
+ cr.addConnection(c);
+ cr.setId(c, "id2");
+}
+
+TEST_F(ConnectionRegistryTest, test_dump)
+{
+ boost::asio::io_context ioc{1};
+ boost::asio::ip::tcp::socket ts{ioc};
+
+ ConnectionRegistry::connection c {std::make_shared<ConnectionRegistry::connection::element_type>(std::move(ts))};
+ 
+ ConnectionRegistry cr{};
+
+ cr.addConnection(c);
+ cr.dump();
+
+ cr.setId(c, "id1");
+ cr.dump();
+}
+
+TEST_F(ConnectionRegistryTest, test_iterators)
+{
+ boost::asio::io_context ioc{1};
+ boost::asio::ip::tcp::socket ts{ioc};
+
+ ConnectionRegistry::connection c {std::make_shared<ConnectionRegistry::connection::element_type>(std::move(ts))};
+ 
+ ConnectionRegistry cr{};
+
+ EXPECT_THROW(cr.begin(""), std::exception);
+ EXPECT_THROW(cr.end(""), std::exception);
+ EXPECT_EQ(std::distance(cr.begin(), cr.end()), 0);
+ 
+ cr.addConnection(c);
+ EXPECT_THROW(cr.begin(""), std::exception);
+ EXPECT_THROW(cr.end(""), std::exception);
+ EXPECT_EQ(std::distance(cr.begin(), cr.end()), 1);
+ 
+ cr.setId(c, "id1");
+
+ EXPECT_EQ(std::distance(cr.begin("id1"), cr.end("id1")), 1);
+ EXPECT_EQ(std::distance(cr.begin(), cr.end()), 1);
+}
+
+TEST_F(ConnectionRegistryTest, test_guard)
+{
+ boost::asio::io_context ioc{1};
+ boost::asio::ip::tcp::socket ts{ioc};
+
+ ConnectionRegistry::connection c {std::make_shared<ConnectionRegistry::connection::element_type>(std::move(ts))};
+ 
+ ConnectionRegistry cr{};
+
+ {
+  ConnectionRegistry::RegistryGuard rg{cr, c};
+
+  EXPECT_THROW(cr.addConnection(c), std::exception);
+ }
+
+ EXPECT_THROW(cr.delConnection(c), std::exception);
+}
+
+TEST_F(ConnectionRegistryTest, number_of_connections)
+{
+ boost::asio::io_context ioc{1};
+
+ boost::asio::ip::tcp::socket ts0{ioc};
+ ConnectionRegistry::connection c0 {std::make_shared<ConnectionRegistry::connection::element_type>(std::move(ts0))};
+ 
+ boost::asio::ip::tcp::socket ts1{ioc};
+ ConnectionRegistry::connection c1 {std::make_shared<ConnectionRegistry::connection::element_type>(std::move(ts1))};
+ 
+ ConnectionRegistry cr{};
+
+ EXPECT_EQ(cr.number_of_connections(), 0);
+ cr.addConnection(c0);
+ EXPECT_EQ(cr.number_of_connections(), 1);
+ cr.addConnection(c1);
+ EXPECT_EQ(cr.number_of_connections(), 2);
+ cr.delConnection(c0);
+ EXPECT_EQ(cr.number_of_connections(), 1);
+ cr.delConnection(c1);
+ EXPECT_EQ(cr.number_of_connections(), 0);
+}
+
diff --git a/tests/test-diff.cpp b/tests/test-diff.cpp
new file mode 100644
index 0000000..d09c58e
--- /dev/null
+++ b/tests/test-diff.cpp
@@ -0,0 +1,199 @@
+#include <gtest/gtest.h>
+
+#include <filesystem>
+#include <string>
+#include <system_error>
+
+#include <stdlib.h>
+
+#include <boost/property_tree/ptree.hpp>
+
+#include "libreichwein/file.h"
+
+#include "diff.h"
+
+namespace fs = std::filesystem;
+namespace pt = boost::property_tree;
+using namespace Reichwein;
+
+class DiffTest: public ::testing::Test
+{
+protected:
+ DiffTest(){
+ }
+
+ ~DiffTest(){
+ }
+};
+
+TEST_F(DiffTest, constructor)
+{
+ // empty constructor
+ {
+  Diff d{};
+  EXPECT_EQ(d.get_xml(), "<diff><start>0</start><end>0</end><data/></diff>");
+ }
+
+ // constructor via xml diff
+ {
+  EXPECT_THROW(Diff d{""}, std::exception);
+ }
+ {
+  EXPECT_THROW(Diff d{"<diff><begin></begin></diff>"}, std::exception);
+  EXPECT_THROW(Diff d{"<diff><end>0</end><data>abc</data></diff>"}, std::exception);
+  EXPECT_THROW(Diff d{"<diff><start>0</start><data>abc</data></diff>"}, std::exception);
+  EXPECT_THROW(Diff d{"<diff><start>0</start><end>0</end></diff>"}, std::exception);
+  EXPECT_THROW(Diff d{"<diff><start>5</start><end>0</end><data>abc</data></diff>"}, std::exception);
+  EXPECT_THROW(Diff d{"<diff><start></start><end>0</end><data>abc</data></diff>"}, std::exception);
+ }
+
+ {
+  Diff d{"<diff><start>0</start><end>0</end><data>abc</data></diff>"};
+  EXPECT_EQ(d.get_xml(), "<diff><start>0</start><end>0</end><data>abc</data></diff>");
+ }
+
+ {
+  Diff d{"<diff><start>5</start><end>5</end><data>abc</data></diff>"};
+  EXPECT_EQ(d.get_xml(), "<diff><start>5</start><end>5</end><data>abc</data></diff>");
+ }
+
+ {
+  Diff d{"<diff><start>5</start><end>50</end><data>abc</data></diff>"};
+  EXPECT_EQ(d.get_xml(), "<diff><start>5</start><end>50</end><data>abc</data></diff>");
+ }
+ 
+ // constructor via ptree
+ {
+  pt::ptree ptree;
+  EXPECT_THROW(Diff d{ptree}, std::exception);
+  
+  ptree.put("diff.start", 0);
+  ptree.put("diff.end", 0);
+  ptree.put("diff.data", "abc");
+  Diff d{ptree};
+  EXPECT_EQ(d.get_xml(), "<diff><start>0</start><end>0</end><data>abc</data></diff>");
+ }
+
+ // constructor via versions
+ {
+  Diff d{"", ""};
+  EXPECT_EQ(d.get_xml(), "<diff><start>0</start><end>0</end><data/></diff>");
+ }
+ {
+  Diff d{"a", "a"};
+  EXPECT_EQ(d.get_xml(), "<diff><start>0</start><end>0</end><data/></diff>");
+ }
+ {
+  Diff d{"a", "b"};
+  EXPECT_EQ(d.get_xml(), "<diff><start>0</start><end>1</end><data>b</data></diff>");
+ }
+ {
+  Diff d{"0a1", "0b1"};
+  EXPECT_EQ(d.get_xml(), "<diff><start>1</start><end>2</end><data>b</data></diff>");
+ }
+ {
+  Diff d{"0abc1", "00b01"};
+  EXPECT_EQ(d.get_xml(), "<diff><start>1</start><end>4</end><data>0b0</data></diff>");
+ }
+ {
+  Diff d{"0ab1", "00b01"};
+  EXPECT_EQ(d.get_xml(), "<diff><start>1</start><end>3</end><data>0b0</data></diff>");
+ }
+ {
+  Diff d{"0abc1", "00b1"};
+  EXPECT_EQ(d.get_xml(), "<diff><start>1</start><end>4</end><data>0b</data></diff>");
+ }
+ {
+  Diff d{"0abc1", ""};
+  EXPECT_EQ(d.get_xml(), "<diff><start>0</start><end>5</end><data/></diff>");
+ }
+ {
+  Diff d{"bc1", "0abc1"};
+  EXPECT_EQ(d.get_xml(), "<diff><start>0</start><end>0</end><data>0a</data></diff>");
+ }
+ {
+  Diff d{"0abc1", "0ab"};
+  EXPECT_EQ(d.get_xml(), "<diff><start>3</start><end>5</end><data/></diff>");
+ }
+ {
+  Diff d{"0abc1", "0abc123"};
+  EXPECT_EQ(d.get_xml(), "<diff><start>5</start><end>5</end><data>23</data></diff>");
+ }
+ {
+  Diff d{"0abc1", "010abc1"};
+  EXPECT_EQ(d.get_xml(), "<diff><start>0</start><end>0</end><data>01</data></diff>");
+ }
+ {
+  Diff d{"0abc1", "0ac1"};
+  EXPECT_EQ(d.get_xml(), "<diff><start>2</start><end>3</end><data/></diff>");
+ }
+ {
+  Diff d{"0abc1", "0abxc1"};
+  EXPECT_EQ(d.get_xml(), "<diff><start>3</start><end>3</end><data>x</data></diff>");
+ }
+ {
+  Diff d{"abc", "c"};
+  EXPECT_EQ(d.get_xml(), "<diff><start>0</start><end>2</end><data/></diff>");
+ }
+ {
+  Diff d{"aaaa", "aa"};
+  EXPECT_EQ(d.get_xml(), "<diff><start>2</start><end>4</end><data/></diff>");
+ }
+ {
+  Diff d{"baaaa", "baa"};
+  EXPECT_EQ(d.get_xml(), "<diff><start>3</start><end>5</end><data/></diff>");
+ }
+ {
+  Diff d{"baaaab", "baab"};
+  EXPECT_EQ(d.get_xml(), "<diff><start>1</start><end>3</end><data/></diff>");
+ }
+ {
+  Diff d{"baaaab", "baaaaaaab"};
+  EXPECT_EQ(d.get_xml(), "<diff><start>1</start><end>1</end><data>aaa</data></diff>");
+ }
+}
+
+TEST_F(DiffTest, empty)
+{
+ {
+  Diff d;
+  EXPECT_TRUE(d.empty());
+ }
+
+ {
+  Diff d{"<diff><start>1</start><end>3</end><data/></diff>"};
+  EXPECT_FALSE(d.empty());
+ }
+ 
+ {
+  Diff d{"<diff><start>1</start><end>1</end><data/></diff>"};
+  EXPECT_TRUE(d.empty());
+ }
+ 
+ {
+  Diff d{"<diff><start>1</start><end>1</end><data>abc</data></diff>"};
+  EXPECT_FALSE(d.empty());
+ }
+
+ {
+  Diff d{"<diff><start>0</start><end>0</end><data/></diff>"};
+  EXPECT_TRUE(d.empty());
+ }
+}
+
+TEST_F(DiffTest, diff_create)
+{
+ const char* result {diff_create("0abc1", "0ab")};
+
+ EXPECT_EQ(std::string(result), "<diff><start>3</start><end>5</end><data/></diff>");
+ free((void*)result); // this will be done by javascript side in real scenario
+}
+
+TEST_F(DiffTest, diff_apply)
+{
+ const char* result {diff_apply("0abc1", "<diff><start>3</start><end>5</end><data/></diff>")};
+
+ EXPECT_EQ(std::string(result), "0ab");
+ free((void*)result); // this will be done by javascript side in real scenario
+}
+
diff --git a/tests/test-qrcode.cpp b/tests/test-qrcode.cpp
new file mode 100644
index 0000000..96cfdb0
--- /dev/null
+++ b/tests/test-qrcode.cpp
@@ -0,0 +1,140 @@
+#include <gtest/gtest.h>
+
+#include <filesystem>
+#include <memory>
+#include <string>
+#include <system_error>
+
+#include "libreichwein/file.h"
+
+#include "qrcode.h"
+
+namespace fs = std::filesystem;
+
+class QRCodeTest: public ::testing::Test
+{
+protected:
+ QRCodeTest(){
+ }
+
+ ~QRCodeTest() override{
+ }
+
+ void SetUp() override
+ {
+  QRCode::init();
+ }
+
+ void TearDown() override
+ {
+ }
+
+};
+
+TEST_F(QRCodeTest, empty)
+{
+ unsigned char empty_png[] = {
+  0x89, 0x50, 0x4e, 0x47, 0x0d, 0x0a, 0x1a, 0x0a, 0x00, 0x00, 0x00, 0x0d,
+  0x49, 0x48, 0x44, 0x52, 0x00, 0x00, 0x00, 0x15, 0x00, 0x00, 0x00, 0x15,
+  0x10, 0x00, 0x00, 0x00, 0x00, 0xdc, 0xec, 0x26, 0x09, 0x00, 0x00, 0x00,
+  0xa7, 0x49, 0x44, 0x41, 0x54, 0x28, 0xcf, 0x7d, 0x92, 0x4b, 0x12, 0xc3,
+  0x30, 0x08, 0x43, 0x79, 0x99, 0xde, 0xff, 0xca, 0xea, 0x82, 0x51, 0xf9,
+  0xc4, 0xae, 0x17, 0x89, 0x01, 0x03, 0x02, 0x89, 0x18, 0x47, 0x8a, 0x00,
+  0x29, 0x2d, 0xe8, 0xb1, 0x4f, 0x86, 0x7b, 0x48, 0x02, 0x7b, 0x57, 0xcc,
+  0xa6, 0xd4, 0x43, 0xd3, 0x96, 0x22, 0x9e, 0x38, 0x9e, 0x9e, 0xe2, 0xf3,
+  0x9c, 0x1f, 0x15, 0xde, 0x81, 0xf5, 0x5d, 0x43, 0x02, 0x3f, 0x3e, 0xd5,
+  0x1f, 0xf8, 0x36, 0xee, 0x88, 0x08, 0xae, 0x59, 0x37, 0xac, 0x00, 0xfe,
+  0xee, 0x9d, 0x76, 0x6f, 0x48, 0x52, 0xb5, 0xcc, 0x7b, 0xfd, 0xed, 0x1f,
+  0x1b, 0xa8, 0xec, 0x64, 0x6d, 0x51, 0x31, 0xab, 0x15, 0xf2, 0xb2, 0xdc,
+  0x91, 0x4e, 0x24, 0x48, 0x7d, 0xa3, 0x53, 0x03, 0xaf, 0x0d, 0x54, 0xd3,
+  0x9b, 0x6c, 0x16, 0xa1, 0x7b, 0x34, 0x29, 0x82, 0xa9, 0x9e, 0x84, 0x61,
+  0xc6, 0x66, 0xfd, 0xc7, 0x9b, 0x73, 0x93, 0x2d, 0xc0, 0xf4, 0xc3, 0x1f,
+  0x65, 0xf1, 0x1b, 0xd8, 0x30, 0xae, 0xca, 0x9a, 0x83, 0x02, 0x1c, 0x94,
+  0xe5, 0x4d, 0x27, 0x42, 0x57, 0x3e, 0x34, 0xde, 0x74, 0x16, 0xf2, 0x2f,
+  0x2f, 0xd5, 0xa5, 0xd0, 0x5a, 0x61, 0xde, 0x49, 0x00, 0x00, 0x00, 0x00,
+  0x49, 0x45, 0x4e, 0x44, 0xae, 0x42, 0x60, 0x82
+ };
+ // Test prepared with:
+ //File::setFile("empty.png", QRCode::getQRCode(""));
+ //then: xxd -i tests/empty.png  >> tests/test-qrcode.cpp
+
+ EXPECT_EQ(QRCode::getQRCode(""), std::string(reinterpret_cast<char*>(&empty_png[0]), sizeof(empty_png)));
+}
+
+TEST_F(QRCodeTest, simple)
+{
+ unsigned char simple_png[] = {
+  0x89, 0x50, 0x4e, 0x47, 0x0d, 0x0a, 0x1a, 0x0a, 0x00, 0x00, 0x00, 0x0d,
+  0x49, 0x48, 0x44, 0x52, 0x00, 0x00, 0x00, 0x15, 0x00, 0x00, 0x00, 0x15,
+  0x10, 0x00, 0x00, 0x00, 0x00, 0xdc, 0xec, 0x26, 0x09, 0x00, 0x00, 0x00,
+  0xa5, 0x49, 0x44, 0x41, 0x54, 0x28, 0xcf, 0x75, 0x52, 0xd1, 0x0e, 0xc0,
+  0x40, 0x04, 0x6b, 0x17, 0xff, 0xff, 0xcb, 0xf6, 0xe0, 0x4c, 0x39, 0x93,
+  0x6c, 0x09, 0x47, 0x55, 0x01, 0x9a, 0xb9, 0xbb, 0xbb, 0x03, 0xf9, 0xa9,
+  0x99, 0x86, 0x48, 0x80, 0x8c, 0xe4, 0x2c, 0xd5, 0xb7, 0xcf, 0x2d, 0xa4,
+  0xfa, 0xeb, 0x9b, 0x61, 0xb5, 0xd9, 0x1c, 0x00, 0x9e, 0x2d, 0x2d, 0x88,
+  0xcc, 0xb8, 0xdd, 0x18, 0xa4, 0x3b, 0xa9, 0xad, 0x7f, 0x1b, 0xff, 0x29,
+  0xc0, 0xbd, 0x8a, 0x5c, 0xf0, 0x52, 0xc7, 0x2e, 0x90, 0x2a, 0x91, 0x51,
+  0x4b, 0xfa, 0xc9, 0x2e, 0xfc, 0x40, 0x55, 0x6c, 0xb2, 0xe1, 0xf5, 0x4e,
+  0xd3, 0x7f, 0xaa, 0xf2, 0xa6, 0x52, 0x24, 0x48, 0x77, 0xd9, 0xfa, 0x9c,
+  0x7c, 0xae, 0xf7, 0x52, 0xa0, 0xab, 0xaa, 0x71, 0xeb, 0x5b, 0xa9, 0x21,
+  0xfa, 0x50, 0x67, 0x5b, 0xe3, 0x7a, 0xd0, 0x67, 0x8f, 0x0e, 0xe4, 0x59,
+  0x6c, 0xa4, 0x94, 0x96, 0xda, 0x29, 0xca, 0x80, 0xf5, 0x5c, 0x52, 0x53,
+  0x3d, 0x9a, 0xa3, 0xcb, 0x7d, 0xaf, 0x93, 0xf9, 0xa1, 0xd2, 0xb9, 0xea,
+  0xc6, 0x92, 0xf1, 0x7a, 0x0f, 0xaa, 0xee, 0x8c, 0x03, 0x2f, 0x88, 0x71,
+  0xb5, 0xba, 0xf0, 0x88, 0xba, 0xb0, 0x00, 0x00, 0x00, 0x00, 0x49, 0x45,
+  0x4e, 0x44, 0xae, 0x42, 0x60, 0x82
+ };
+ // Test prepared with:
+ //File::setFile("simple.png", QRCode::getQRCode("abc"));
+ //then: xxd -i tests/simple.png  >> tests/test-qrcode.cpp
+ EXPECT_EQ(QRCode::getQRCode("abc"), std::string(reinterpret_cast<char*>(&simple_png[0]), sizeof(simple_png)));
+}
+
+TEST_F(QRCodeTest, url)
+{
+ unsigned char url_png[] = {
+  0x89, 0x50, 0x4e, 0x47, 0x0d, 0x0a, 0x1a, 0x0a, 0x00, 0x00, 0x00, 0x0d,
+  0x49, 0x48, 0x44, 0x52, 0x00, 0x00, 0x00, 0x1d, 0x00, 0x00, 0x00, 0x1d,
+  0x10, 0x00, 0x00, 0x00, 0x00, 0x23, 0x68, 0xe4, 0x90, 0x00, 0x00, 0x01,
+  0x1f, 0x49, 0x44, 0x41, 0x54, 0x38, 0xcb, 0x75, 0x54, 0xdb, 0x0e, 0xc5,
+  0x30, 0x08, 0x92, 0xa5, 0xff, 0xff, 0xcb, 0x9c, 0x07, 0xe7, 0x41, 0xb4,
+  0x6b, 0xb2, 0x64, 0x36, 0x5e, 0xa8, 0xa0, 0x11, 0x76, 0xc8, 0x08, 0x92,
+  0x24, 0xcb, 0xde, 0x7f, 0x75, 0x4e, 0xba, 0xe7, 0x01, 0x22, 0x48, 0x20,
+  0xbf, 0xb4, 0x2b, 0xe1, 0xfc, 0x03, 0x4e, 0x85, 0xd4, 0x75, 0x06, 0xe5,
+  0xbf, 0xc2, 0xf3, 0xd6, 0x7d, 0x9f, 0x58, 0x07, 0x50, 0xbd, 0xc2, 0x11,
+  0x97, 0xb3, 0x42, 0x3b, 0xd0, 0xb4, 0x33, 0x7c, 0x87, 0x1e, 0x7f, 0x81,
+  0xd7, 0x51, 0x0a, 0x01, 0xbe, 0x25, 0x69, 0x1d, 0xfe, 0xfe, 0xac, 0xea,
+  0x2d, 0x8b, 0x57, 0x50, 0xed, 0xe1, 0xbb, 0x73, 0x3a, 0xaf, 0x65, 0x7b,
+  0xba, 0xd7, 0xea, 0x64, 0x94, 0x93, 0x1c, 0x2a, 0xd8, 0xd3, 0x92, 0x7f,
+  0x95, 0xec, 0x90, 0xa9, 0x9f, 0xb2, 0x94, 0xee, 0x88, 0xf4, 0xba, 0x72,
+  0x4e, 0xf5, 0x5a, 0x69, 0x6b, 0xf0, 0xdc, 0x6b, 0xf8, 0x4b, 0x85, 0xac,
+  0x3f, 0x8a, 0x7c, 0xba, 0x0c, 0x66, 0x78, 0xe7, 0x55, 0xdc, 0x96, 0xda,
+  0x5e, 0x99, 0x2b, 0x38, 0xc5, 0x3f, 0x61, 0x6d, 0x0a, 0x81, 0xf0, 0x56,
+  0x4c, 0x4e, 0x7d, 0xe4, 0x7c, 0x24, 0x9f, 0x39, 0x74, 0xe5, 0x86, 0x86,
+  0x87, 0x04, 0x2e, 0x23, 0xd0, 0xdb, 0x20, 0x8a, 0xe6, 0x60, 0x4f, 0x91,
+  0x7c, 0x32, 0xe6, 0x2f, 0xdc, 0x12, 0x79, 0x31, 0x0a, 0x56, 0xe7, 0xb2,
+  0xef, 0x07, 0x98, 0x8f, 0x8d, 0xe0, 0x6c, 0xd4, 0x04, 0xb6, 0xe1, 0xbf,
+  0xc2, 0x98, 0x97, 0x5d, 0x43, 0xaa, 0x5f, 0xdb, 0xca, 0x6f, 0x57, 0xd3,
+  0xee, 0xe4, 0xec, 0x3e, 0x9c, 0x4d, 0x8e, 0x81, 0xc2, 0x2d, 0x5d, 0x56,
+  0x7e, 0x32, 0x44, 0xbc, 0xed, 0x6a, 0x1a, 0x87, 0xf4, 0x2a, 0xe8, 0x6b,
+  0xad, 0x75, 0x51, 0xfa, 0x66, 0xf4, 0x07, 0x01, 0x97, 0x8d, 0x08, 0x90,
+  0x09, 0xb5, 0xef, 0x64, 0xe7, 0xbf, 0x49, 0x62, 0x8e, 0xfa, 0xec, 0xfb,
+  0x26, 0xad, 0x8d, 0xba, 0x3b, 0xf5, 0xf6, 0xf8, 0x22, 0x95, 0xf7, 0x0f,
+  0x4c, 0x20, 0xaf, 0x2d, 0xca, 0xaf, 0x0d, 0xc5, 0x00, 0x00, 0x00, 0x00,
+  0x49, 0x45, 0x4e, 0x44, 0xae, 0x42, 0x60, 0x82
+ };
+ // Test prepared with:
+ //File::setFile("url.png", QRCode::getQRCode("https://reichwein.it/whiteboard"));
+ //then: xxd -i tests/url.png  >> tests/test-qrcode.cpp
+ EXPECT_EQ(QRCode::getQRCode("https://reichwein.it/whiteboard"), std::string(reinterpret_cast<char*>(&url_png[0]), sizeof(url_png)));
+}
+
+TEST_F(QRCodeTest, deterministic)
+{
+ EXPECT_EQ(QRCode::getQRCode("data1"), QRCode::getQRCode("data1"));
+}
+
+TEST_F(QRCodeTest, different_data)
+{
+ EXPECT_NE(QRCode::getQRCode("data1"), QRCode::getQRCode("data2"));
+}
diff --git a/tests/test-storage.cpp b/tests/test-storage.cpp
new file mode 100644
index 0000000..6239f8f
--- /dev/null
+++ b/tests/test-storage.cpp
@@ -0,0 +1,283 @@
+#include <gtest/gtest.h>
+
+#include <filesystem>
+#include <memory>
+#include <string>
+#include <system_error>
+
+#include "libreichwein/file.h"
+
+#include "config.h"
+#include "storage.h"
+
+namespace fs = std::filesystem;
+using namespace Reichwein;
+using namespace std::string_literals;
+
+namespace {
+ const std::string testConfigFilename{"./test.conf"};
+ const std::string testDbFilename{"./whiteboard.db3"};
+}
+
+class StorageTest: public ::testing::Test
+{
+protected:
+ StorageTest(){
+ }
+
+ ~StorageTest() override{
+ }
+
+ void SetUp() override
+ {
+  File::setFile(testConfigFilename, R"CONFIG(
+<config>
+ <datapath>.</datapath>
+ <maxage>2592000</maxage>
+</config>
+)CONFIG");
+  std::error_code ec;
+  fs::remove(testDbFilename, ec);
+
+  m_config = std::make_shared<Config>(testConfigFilename);
+ }
+
+ void TearDown() override
+ {
+  std::error_code ec;
+  fs::remove(testDbFilename, ec);
+  fs::remove(testConfigFilename, ec);
+ }
+
+ std::shared_ptr<Config> m_config;
+};
+
+TEST_F(StorageTest, create)
+{
+ ASSERT_TRUE(!fs::exists(testDbFilename));
+
+ {
+  ASSERT_EQ(m_config->getDataPath(), ".");
+  ASSERT_TRUE(!fs::exists(testDbFilename));
+  Storage storage(*m_config);
+ }
+
+ ASSERT_TRUE(fs::exists(testDbFilename));
+}
+
+TEST_F(StorageTest, getNumberOfDocuments)
+{
+ Storage storage(*m_config);
+ EXPECT_EQ(storage.getNumberOfDocuments(), 0UL);
+ storage.setDocument("123", "abc");
+ EXPECT_EQ(storage.getNumberOfDocuments(), 1UL);
+ storage.setDocument("def", "xyz");
+ EXPECT_EQ(storage.getNumberOfDocuments(), 2UL);
+}
+
+TEST_F(StorageTest, cleanup_empty)
+{
+ Storage storage(*m_config);
+ EXPECT_EQ(storage.getNumberOfDocuments(), 0UL);
+ storage.cleanup();
+ EXPECT_EQ(storage.getNumberOfDocuments(), 0UL);
+}
+
+TEST_F(StorageTest, cleanup)
+{
+ Storage storage(*m_config);
+ EXPECT_EQ(storage.getNumberOfDocuments(), 0UL);
+ storage.setDocument("123", "abc");
+ EXPECT_EQ(storage.getNumberOfDocuments(), 1UL);
+ storage.cleanup();
+ EXPECT_EQ(storage.getNumberOfDocuments(), 1UL);
+}
+
+TEST_F(StorageTest, exists)
+{
+ Storage storage(*m_config);
+ EXPECT_EQ(storage.exists(""), false);
+ EXPECT_EQ(storage.exists("0"), false);
+ EXPECT_EQ(storage.exists("123"), false);
+ EXPECT_EQ(storage.exists("abcdz"), false);
+
+ storage.setDocument("", "abc");
+ EXPECT_EQ(storage.exists(""), true);
+ storage.setDocument("0", "abc");
+ EXPECT_EQ(storage.exists("0"), true);
+ storage.setDocument("123", "abc");
+ EXPECT_EQ(storage.exists("123"), true);
+ storage.setDocument("abcdz", "abc");
+ EXPECT_EQ(storage.exists("abcdz"), true);
+}
+
+TEST_F(StorageTest, setDocument)
+{
+ Storage storage(*m_config);
+ storage.setDocument("0", "abc");
+ EXPECT_EQ(storage.getNumberOfDocuments(), 1UL);
+ EXPECT_EQ(storage.getDocument("0"), "abc");
+}
+
+TEST_F(StorageTest, touchDocument)
+{
+ Storage storage(*m_config);
+ EXPECT_THROW(storage.touchDocument("0"), std::exception);
+ storage.setDocument("0", "abc");
+ storage.touchDocument("0");
+ EXPECT_EQ(storage.getNumberOfDocuments(), 1UL);
+ EXPECT_EQ(storage.getDocument("0"), "abc");
+}
+
+TEST_F(StorageTest, setRevision)
+{
+ Storage storage(*m_config);
+ storage.setDocument("0", "abc");
+ storage.setRevision("0", 123);
+
+ EXPECT_EQ(storage.getNumberOfDocuments(), 1UL);
+ EXPECT_EQ(storage.getRevision("0"), 123);
+ 
+ try {
+  storage.setRevision("1", 123);
+  FAIL();
+ } catch(const std::exception& ex) {
+  EXPECT_EQ("Unable to set revision for id 1"s, ex.what());
+ } catch(...) {
+  FAIL();
+ }
+}
+
+TEST_F(StorageTest, setCursorPos)
+{
+ Storage storage(*m_config);
+ storage.setDocument("0", "abc");
+ storage.setCursorPos("0", 1234);
+
+ EXPECT_EQ(storage.getNumberOfDocuments(), 1UL);
+ EXPECT_EQ(storage.getCursorPos("0"), 1234);
+ 
+ try {
+  storage.setCursorPos("1", 12345);
+  FAIL();
+ } catch(const std::exception& ex) {
+  EXPECT_EQ("Unable to set cursor position for id 1"s, ex.what());
+ } catch(...) {
+  FAIL();
+ }
+}
+
+TEST_F(StorageTest, setRow)
+{
+ Storage storage(*m_config);
+ storage.setRow("0", "abc", 56, 67);
+
+ EXPECT_EQ(storage.getNumberOfDocuments(), 1UL);
+ EXPECT_EQ(storage.getDocument("0"), "abc");
+ EXPECT_EQ(storage.getRevision("0"), 56);
+ EXPECT_EQ(storage.getCursorPos("0"), 67);
+}
+
+TEST_F(StorageTest, getDocument)
+{
+ Storage storage(*m_config);
+ storage.setDocument("0", "xyz");
+ storage.setDocument("0bc", "xyz2");
+ storage.setDocument("iabc", "xyz3");
+ storage.setDocument("zxy", "xyz4");
+ 
+ EXPECT_EQ(storage.getDocument("0"), "xyz");
+}
+
+TEST_F(StorageTest, getRevision)
+{
+ Storage storage(*m_config);
+ storage.setRow("0", "abc", 123, 456);
+ 
+ EXPECT_EQ(storage.getRevision("0"), 123);
+}
+
+TEST_F(StorageTest, getCursorPos)
+{
+ Storage storage(*m_config);
+ storage.setRow("0", "abc", 123, 456);
+ 
+ EXPECT_EQ(storage.getCursorPos("0"), 456);
+}
+
+TEST_F(StorageTest, getRow)
+{
+ Storage storage(*m_config);
+ storage.setRow("0", "abc", 123, 456);
+
+ auto row{storage.getRow("0")};
+ EXPECT_EQ(std::get<0>(row), "abc");
+ EXPECT_EQ(std::get<1>(row), 123);
+ EXPECT_EQ(std::get<2>(row), 456);
+}
+
+TEST_F(StorageTest, revision_increment)
+{
+ Storage storage(*m_config);
+ storage.setDocument("0", "xyz");
+ storage.setDocument("0bc", "xyz2");
+ storage.setDocument("iabc", "xyz3");
+ 
+ EXPECT_EQ(storage.getRevision("0"), 0);
+ EXPECT_EQ(storage.getRevision("0bc"), 0);
+ EXPECT_EQ(storage.getRevision("iabc"), 0);
+ 
+ storage.setDocument("0bc", "xyz234");
+ EXPECT_EQ(storage.getRevision("0bc"), 1);
+ 
+ storage.setDocument("0bc", "xyz2345");
+ EXPECT_EQ(storage.getRevision("0"), 0);
+ EXPECT_EQ(storage.getRevision("0bc"), 2);
+ EXPECT_EQ(storage.getRevision("iabc"), 0);
+}
+
+TEST_F(StorageTest, generate_id)
+{
+ Storage storage(*m_config);
+ for (int i = 0; i < 100; i++) {
+  std::string a{storage.generate_id()};
+  std::string b{storage.generate_id()};
+
+  EXPECT_NE(a, b);
+  EXPECT_NE(a, "");
+  EXPECT_NE(b, "");
+
+  EXPECT_GE(a.size(), 6);
+
+  for (char c: a + b) {
+   EXPECT_TRUE((c >= '0' && c <= '9') || (c >= 'a' && c <= 'z'));
+  }
+ }
+}
+
+TEST_F(StorageTest, checksum32)
+{
+ EXPECT_EQ(checksum32(""), 0);
+ EXPECT_EQ(checksum32("0"), 48);
+ EXPECT_EQ(checksum32("\x00"), 0);
+ EXPECT_EQ(checksum32("123"), 1073741862);
+ EXPECT_EQ(checksum32("a"), 97);
+ EXPECT_EQ(checksum32("ab"), 82);
+ EXPECT_EQ(checksum32("abc"), 1073741898);
+}
+
+TEST_F(StorageTest, db_size)
+{
+ Storage storage(*m_config);
+ auto dbsize_gross{storage.dbsize_gross()};
+ auto dbsize_net{storage.dbsize_net()};
+
+ EXPECT_LE(0, storage.dbsize_net());
+ EXPECT_LE(storage.dbsize_net(), storage.dbsize_gross());
+ 
+ storage.setDocument("0", "xyz");
+ 
+ EXPECT_LE(dbsize_net, storage.dbsize_net());
+ EXPECT_LE(dbsize_gross, storage.dbsize_gross());
+}
+
diff --git a/tests/test-whiteboard.cpp b/tests/test-whiteboard.cpp
new file mode 100644
index 0000000..3f70bcf
--- /dev/null
+++ b/tests/test-whiteboard.cpp
@@ -0,0 +1,255 @@
+#include <gtest/gtest.h>
+
+#include <cstring>
+#include <filesystem>
+#include <memory>
+#include <regex>
+#include <string>
+#include <system_error>
+#include <thread>
+
+#include <boost/process/child.hpp>
+#include <boost/algorithm/string.hpp>
+#include <boost/beast/core.hpp>
+#include <boost/beast/http.hpp>
+#include <boost/beast/websocket.hpp>
+#include <boost/asio/buffer.hpp>
+#include <boost/asio/buffers_iterator.hpp>
+#include <boost/asio/connect.hpp>
+#include <boost/asio/ip/tcp.hpp>
+#include <boost/asio/local/stream_protocol.hpp>
+
+#include <unistd.h>
+
+#include "libreichwein/file.h"
+#include "libreichwein/process.h"
+
+#include "config.h"
+#include "storage.h"
+#include "whiteboard.h"
+
+namespace bp = boost::process;
+namespace fs = std::filesystem;
+using namespace Reichwein;
+using namespace std::string_literals;
+
+namespace {
+ const fs::path webserverConfigFilename{"./webserver.conf"};
+
+ const fs::path testConfigFilename{"./whiteboard.conf"};
+ const fs::path testDbFilename{"./whiteboard.db3"};
+}
+
+class WhiteboardTest: public ::testing::Test
+{
+protected:
+ WhiteboardTest(){
+ }
+
+ ~WhiteboardTest() override{
+ }
+
+ void SetUp() override
+ {
+  File::setFile(testConfigFilename, R"CONFIG(
+<config>
+ <port>::1:9876</port>
+ <datapath>.</datapath>
+ <maxage>2592000</maxage>
+ <threads>4</threads>
+ <maxconnections>3</maxconnections>
+</config>
+)CONFIG");
+  std::error_code ec;
+  fs::remove(testDbFilename, ec);
+
+  m_config = std::make_shared<Config>(testConfigFilename);
+
+  m_pid = fork();
+  if (m_pid == -1) {
+   throw std::runtime_error("Error on fork(): "s + strerror(errno));
+  } else if (m_pid == 0) { // child
+   Whiteboard whiteboard;
+   std::vector<std::string> argvv{{"whiteboard", "-c", testConfigFilename.generic_string()}};
+   char* argv[] = {argvv[0].data(), argvv[1].data(), argvv[2].data(), nullptr};
+   whiteboard.run(argvv.size(), argv);
+   exit(0);
+  }
+  Process::wait_for_pid_listening_on(m_pid, 9876);
+  std::this_thread::sleep_for(std::chrono::milliseconds(20));
+ }
+
+ void TearDown() override
+ {
+  if (m_pid == 0)
+   throw std::runtime_error("Whiteboard not running on requesting SIGTERM");
+
+  if (kill(m_pid, SIGTERM) != 0)
+   throw std::runtime_error("Unable to SIGTERM Whiteboard");
+
+  if (int result = waitpid(m_pid, NULL, 0); result != m_pid)
+   throw std::runtime_error("waitpid returned "s + std::to_string(result));
+
+  std::error_code ec;
+  fs::remove(testDbFilename, ec);
+  fs::remove(testConfigFilename, ec);
+ }
+
+ std::shared_ptr<Config> m_config;
+ pid_t m_pid{};
+};
+
+class WebsocketClient
+{
+public:
+ WebsocketClient()
+ {
+  std::string host = "::1";
+  auto const  port = "9876" ;
+
+  // These objects perform our I/O
+  boost::asio::ip::tcp::resolver resolver{ioc_};
+  ws_ = std::make_unique<boost::beast::websocket::stream<boost::asio::ip::tcp::socket>>(ioc_);
+
+  // Look up the domain name
+  resolver_results_ = resolver.resolve(host, port);
+
+  connect();
+  handshake();
+ }
+
+ void connect()
+ {
+  // Make the connection on the IP address we get from a lookup
+  ep_ = boost::asio::connect(boost::beast::get_lowest_layer(*ws_), resolver_results_);
+ }
+
+ void handshake()
+ {
+  // Update the host_ string. This will provide the value of the
+  // Host HTTP header during the WebSocket handshake.
+  // See https://tools.ietf.org/html/rfc7230#section-5.4
+  std::string host{"[::1]:9876"};
+
+  // Set a decorator to change the User-Agent of the handshake
+  ws_->set_option(boost::beast::websocket::stream_base::decorator(
+      [](boost::beast::websocket::request_type& req)
+      {
+          req.set(boost::beast::http::field::user_agent,
+              std::string("Reichwein.IT Test Websocket Client"));
+      }));
+  
+  // Perform the websocket handshake
+  ws_->handshake(host, "/");
+
+ }
+
+ void write(const std::string& data)
+ {
+  ws_->write(boost::asio::buffer(data));
+ }
+
+ std::string read()
+ {
+  boost::beast::flat_buffer buffer;
+  ws_->read(buffer);
+  return {boost::asio::buffers_begin(buffer.data()), boost::asio::buffers_end(buffer.data())};
+ }
+
+ ~WebsocketClient()
+ {
+ }
+
+ bool is_open()
+ {
+  return ws_->is_open();
+ }
+
+private:
+ boost::asio::io_context ioc_;
+ boost::asio::ip::tcp::resolver::results_type resolver_results_;
+ std::unique_ptr<boost::beast::websocket::stream<boost::asio::ip::tcp::socket>> ws_;
+ boost::asio::ip::tcp::endpoint ep_;
+};
+
+//
+// tests via websocket server in separate process (hides coverage)
+//
+
+TEST_F(WhiteboardTest, websocket_server_connection)
+{
+ WebsocketClient wc;
+}
+
+TEST_F(WhiteboardTest, websocket_server_generate_id)
+{
+ WebsocketClient wc;
+
+ wc.write("<request><command>newid</command></request>");
+ std::string result0 {wc.read()};
+ ASSERT_TRUE(boost::algorithm::starts_with(result0, "<serverinfo><type>newid</type><id>"));
+ ASSERT_TRUE(boost::algorithm::ends_with(result0, "</id></serverinfo>"));
+ ASSERT_EQ(result0.size(), 58);
+ 
+ wc.write("<request><command>newid</command></request>");
+ std::string result1 {wc.read()};
+ ASSERT_TRUE(boost::algorithm::starts_with(result1, "<serverinfo><type>newid</type><id>"));
+ ASSERT_TRUE(boost::algorithm::ends_with(result1, "</id></serverinfo>"));
+ ASSERT_EQ(result1.size(), 58);
+ 
+ ASSERT_NE(result0, result1);
+}
+
+// check number of threads as configured
+TEST_F(WhiteboardTest, threads)
+{
+ ASSERT_GE(Process::number_of_threads(m_pid), 4);
+}
+
+TEST_F(WhiteboardTest, max_connections)
+{
+ WebsocketClient wc1;
+ std::this_thread::sleep_for(std::chrono::milliseconds(20));
+ ASSERT_TRUE(wc1.is_open());
+ 
+ WebsocketClient wc2;
+ std::this_thread::sleep_for(std::chrono::milliseconds(20));
+ ASSERT_TRUE(wc2.is_open());
+ 
+ WebsocketClient wc3;
+ std::this_thread::sleep_for(std::chrono::milliseconds(20));
+ ASSERT_TRUE(wc3.is_open());
+ 
+ ASSERT_THROW(WebsocketClient wc4, std::exception);
+}
+
+TEST_F(WhiteboardTest, id)
+{
+ WebsocketClient wc;
+
+ wc.write("<request><command>getfile</command><id>1</id></request>");
+ std::string result {wc.read()};
+
+ EXPECT_EQ(result, "<serverinfo><type>getfile</type><data/><revision>0</revision><pos>0</pos></serverinfo>");
+ 
+ wc.write("<request><command>getfile</command><id></id></request>");
+ result = wc.read();
+ EXPECT_EQ(result, "<serverinfo><type>error</type><message>Message handling error: Invalid id (empty)</message></serverinfo>");
+ 
+ wc.write("<request><command>getfile</command><id>01234567890123456789</id></request>");
+ result = wc.read();
+ EXPECT_EQ(result, "<serverinfo><type>error</type><message>Message handling error: Invalid id (size &gt; 16)</message></serverinfo>");
+ 
+ wc.write("<request><command>getfile</command><id>X</id></request>");
+ result = wc.read();
+ EXPECT_EQ(result, "<serverinfo><type>error</type><message>Message handling error: Invalid id char: X</message></serverinfo>");
+ 
+ wc.write("<request><command>getfile</command><id>a.</id></request>");
+ result = wc.read();
+ EXPECT_EQ(result, "<serverinfo><type>error</type><message>Message handling error: Invalid id char: .</message></serverinfo>");
+ 
+ wc.write("<request><command>getfile</command><id>a$b</id></request>");
+ result = wc.read();
+ EXPECT_EQ(result, "<serverinfo><type>error</type><message>Message handling error: Invalid id char: $</message></serverinfo>");
+}
+