add unittests for LambdaBase

iface/CMakeLists.txt

@@ -35,6 +35,7 @@ target_sources(nf7_iface_test
     common/observer_test.cc
     common/task_test.cc
     common/value_test.cc
+    lambda_test.cc
 )
 target_link_libraries(nf7_iface_test
   PRIVATE

iface/lambda_test.cc

@@ -0,0 +1,15 @@
+// No copyright
+#include "iface/lambda.hh"
+#include "iface/lambda_test.hh"
+
+#include <gmock/gmock.h>
+#include <gtest/gtest.h>
+
+
+TEST(LambdaBase, TakeAndRun) {
+  nf7::test::LambdaBaseMock sut;
+
+  EXPECT_CALL(sut, Main);
+
+  sut.taker()->Take(nf7::Value::Null {});
+}

iface/lambda_test.hh

@@ -0,0 +1,23 @@
+// No copyright
+#pragma once
+
+#include "iface/lambda.hh"
+
+#include <gmock/gmock.h>
+
+#include "iface/common/dealer.hh"
+#include "iface/common/value.hh"
+
+
+namespace nf7::test {
+
+class LambdaBaseMock : public LambdaBase {
+ public:
+  using LambdaBase::LambdaBase;
+
+  MOCK_METHOD(void, Main, (const Value&), (noexcept));
+
+  using LambdaBase::emitter;
+};
+
+}  // namespace nf7::test