1 files changed, 68 insertions, 0 deletions
diff --git a/test/fixtures/fixture_log_observer.cpp b/test/fixtures/fixture_log_observer.cpp
new file mode 100644
index 0000000000..08a6415643
--- /dev/null
+++ b/test/fixtures/fixture_log_observer.cpp
@@ -0,0 +1,68 @@
+#include "fixture_log_observer.hpp"
+#include "../fixtures/util.hpp"
+
+namespace mbgl {
+
+FixtureLogObserver::LogMessage::LogMessage(EventSeverity severity_, Event event_, int64_t code_,
+                                          const std::string &msg_)
+    : severity(severity_), event(event_), code(code_), msg(msg_) {
+}
+
+bool FixtureLogObserver::LogMessage::operator==(const LogMessage &rhs) const {
+    return (!severity || !rhs.severity || severity.get() == rhs.severity.get()) &&
+           (!event || !rhs.event || event.get() == rhs.event.get()) &&
+           (!code || !rhs.code || code.get() == rhs.code.get()) &&
+           (!msg || !rhs.msg || msg.get() == rhs.msg.get());
+}
+
+FixtureLogObserver::~FixtureLogObserver() {
+    std::cerr << unchecked();
+}
+
+bool FixtureLogObserver::onRecord(EventSeverity severity, Event event, int64_t code,
+                                  const std::string &msg) {
+    messages.emplace_back(severity, event, code, msg);
+
+    return true;
+}
+
+size_t FixtureLogObserver::count(const LogMessage &message) const {
+    size_t message_count = 0;
+    for (const LogMessage &msg : messages) {
+        if (msg == message) {
+            message_count++;
+            msg.checked = true;
+        }
+    }
+    return message_count;
+}
+
+std::vector<FixtureLogObserver::LogMessage> FixtureLogObserver::unchecked() const {
+    std::vector<LogMessage> unchecked_messages;
+    for (const LogMessage &msg : messages) {
+        if (!msg.checked) {
+            unchecked_messages.push_back(msg);
+            msg.checked = true;
+        }
+    }
+    return unchecked_messages;
+}
+
+::std::ostream &operator<<(::std::ostream &os,
+                           const std::vector<FixtureLogObserver::LogMessage> &messages) {
+    for (const FixtureLogObserver::LogMessage &message : messages) {
+        os << "- " << message;
+    }
+    return os;
+}
+
+::std::ostream &operator<<(::std::ostream &os, const FixtureLogObserver::LogMessage &message) {
+    os << "[\"" << message.severity.get() << "\", \"" << message.event.get() << "\"";
+    if (message.code)
+        os << ", " << message.code.get();
+    if (message.msg)
+        os << ", \"" << message.msg.get() << "\"";
+    return os << "]" << std::endl;
+}
+
+}