1 files changed, 76 insertions, 0 deletions
diff --git a/mocktracer/test/json_test.cpp b/mocktracer/test/json_test.cpp
new file mode 100644
index 0000000..d53d29b
--- /dev/null
+++ b/mocktracer/test/json_test.cpp
@@ -0,0 +1,76 @@
+#include <opentracing/mocktracer/in_memory_recorder.h>
+#include <opentracing/mocktracer/json.h>
+#include <opentracing/mocktracer/tracer.h>
+#include <algorithm>
+#include <cctype>
+
+#define CATCH_CONFIG_MAIN
+#include <opentracing/catch2/catch.hpp>
+using namespace opentracing;
+using namespace mocktracer;
+
+TEST_CASE("json") {
+  auto recorder = new InMemoryRecorder{};
+  MockTracerOptions tracer_options;
+  tracer_options.recorder.reset(recorder);
+  auto tracer = std::shared_ptr<opentracing::Tracer>{
+      new MockTracer{std::move(tracer_options)}};
+
+  SpanContextData span_context_data;
+  span_context_data.trace_id = 123;
+  span_context_data.span_id = 456;
+  span_context_data.baggage = {{"b1", "v1"}, {"b2", "v2"}};
+
+  SpanData span_data;
+  span_data.span_context = span_context_data;
+  span_data.references = {{SpanReferenceType::ChildOfRef, 123, 457}};
+  span_data.operation_name = "o1";
+  span_data.start_timestamp =
+      std::chrono::system_clock::time_point{} + std::chrono::hours{51};
+  span_data.duration = std::chrono::microseconds{92};
+  span_data.tags = {{"t1", 123}, {"t2", "cat"}};
+  span_data.logs = {{span_data.start_timestamp, {{"l1", 1}, {"l2", 1.5}}}};
+  std::ostringstream oss;
+  ToJson(oss, {span_data});
+
+  std::string expected_serialization = R"(
+      [{
+      	"span_context": {
+      		"trace_id": "000000000000007b",
+      		"span_id": "00000000000001c8",
+      		"baggage": {
+      			"b1": "v1",
+      			"b2": "v2"
+      		}
+      	},
+      	"references": [{
+      		"reference_type": "CHILD_OF",
+      		"trace_id": "000000000000007b",
+      		"span_id": "00000000000001c9"
+      	}],
+      	"operation_name": "o1",
+      	"start_timestamp": 183600000000,
+      	"duration": 92,
+      	"tags": {
+      		"t1": 123,
+      		"t2": "cat"
+      	},
+      	"logs": [{
+      		"timestamp": 183600000000,
+      		"fields": [{
+      			"key": "l1",
+      			"value": 1
+      		}, {
+      			"key": "l2",
+      			"value": 1.5
+      		}]
+      	}]
+      }])";
+  expected_serialization.erase(
+      std::remove_if(expected_serialization.begin(),
+                     expected_serialization.end(),
+                     [](char c) { return std::isspace(c); }),
+      expected_serialization.end());
+
+  CHECK(oss.str() == expected_serialization);
+}