diff --git a/xo-indentlog/utest/CMakeLists.txt b/xo-indentlog/utest/CMakeLists.txt
index c8ea729c..5fa2bf1b 100644
--- a/xo-indentlog/utest/CMakeLists.txt
+++ b/xo-indentlog/utest/CMakeLists.txt
@@ -4,7 +4,7 @@ set(SELF_EXECUTABLE_NAME utest.indentlog)
 set(SELF_SOURCE_FILES
     fixed.test.cpp quoted.test.cpp vector.test.cpp array.test.cpp timeutil.test.cpp tag.test.cpp
     filename.test.cpp code_location.test.cpp function.test.cpp pretty_vector.test.cpp
-    indentlog_utest_main.cpp log_streambuf.test.cpp toppstr.test.cpp)
+    indentlog_utest_main.cpp log_streambuf.test.cpp toppstr.test.cpp cond.test.cpp)
 
 xo_add_utest_executable(${SELF_EXECUTABLE_NAME} ${SELF_SOURCE_FILES})
 
diff --git a/xo-indentlog/utest/cond.test.cpp b/xo-indentlog/utest/cond.test.cpp
new file mode 100644
index 00000000..e421c642
--- /dev/null
+++ b/xo-indentlog/utest/cond.test.cpp
@@ -0,0 +1,47 @@
+/* @file cond.test.cpp */
+
+#include "xo/indentlog/print/cond.hpp"
+#include "xo/indentlog/print/tag.hpp"
+#include <catch2/catch.hpp>
+#include <sstream>
+
+using namespace xo;
+
+namespace ut {
+    TEST_CASE("cond", "[cond]") {
+        tag_config::tag_color = color_spec_type::none();
+
+        {
+            std::stringstream ss;
+            ss << cond(true, "yes", "no");
+            REQUIRE(ss.str() == "yes");
+        }
+
+        {
+            std::stringstream ss;
+            ss << cond(false, "yes", "no");
+            REQUIRE(ss.str() == "no");
+        }
+
+        {
+            std::stringstream ss;
+            ss << cond(true, 42, "none");
+            REQUIRE(ss.str() == "42");
+        }
+
+        {
+            std::stringstream ss;
+            ss << cond(false, 42, "none");
+            REQUIRE(ss.str() == "none");
+        }
+
+        {
+            std::stringstream ss;
+            int * ptr = nullptr;
+            ss << cond(ptr != nullptr, xtag("ptr", 123), xtag("ptr", "null"));
+            REQUIRE(ss.str() == " :ptr null");
+        }
+    }
+}
+
+/* end cond.test.cpp */