1 files changed, 104 insertions, 0 deletions
diff --git a/host/tests/constrained_device_args_test.cpp b/host/tests/constrained_device_args_test.cpp
new file mode 100644
index 000000000..c5f256e9e
--- /dev/null
+++ b/host/tests/constrained_device_args_test.cpp
@@ -0,0 +1,104 @@
+//
+// Copyright 2018 Ettus Research, a National Instruments Company
+//
+// SPDX-License-Identifier: GPL-3.0+
+//
+
+#include <boost/test/unit_test.hpp>
+#include <uhdlib/usrp/constrained_device_args.hpp>
+#include <iostream>
+
+using uhd::usrp::constrained_device_args_t;
+
+namespace {
+    enum test_enum_t { VALUE1, VALUE2, VALUE3=4 };
+
+    static constexpr double      MAX_DOUBLE_ARG = 1e6;
+    static constexpr double      MIN_DOUBLE_ARG = 0.125;
+
+    static constexpr double      DEFAULT_DOUBLE_ARG = 2.25;
+    static constexpr size_t      DEFAULT_SIZE_T_ARG = 42;
+    static constexpr bool        DEFAULT_BOOL_ARG   = true;
+    static constexpr test_enum_t DEFAULT_ENUM_ARG   = VALUE1;
+
+
+    class test_device_args_t : public constrained_device_args_t
+    {
+    public:
+        test_device_args_t() {}
+        test_device_args_t(const std::string& dev_args) { parse(dev_args); }
+
+        double get_double_arg() const {
+            return _double_arg.get();
+        }
+        size_t get_size_t_arg() const {
+            return _size_t_arg.get();
+        }
+        bool get_bool_arg() const {
+            return _bool_arg.get();
+        }
+        test_enum_t get_enum_arg() const {
+            return _enum_arg.get();
+        }
+
+        inline virtual std::string to_string() const {
+            return  _double_arg.to_string() + ", " +
+                    _size_t_arg.to_string() + ", " +
+                    _bool_arg.to_string() + ", " +
+                    _enum_arg.to_string();
+        }
+    private:
+        virtual void _parse(const uhd::device_addr_t& dev_args) {
+            if (dev_args.has_key(_double_arg.key()))
+                _double_arg.parse(dev_args[_double_arg.key()]);
+            if (dev_args.has_key(_size_t_arg.key()))
+                _size_t_arg.parse(dev_args[_size_t_arg.key()]);
+            if (dev_args.has_key(_bool_arg.key()))
+                _bool_arg.parse(dev_args[_bool_arg.key()]);
+            if (dev_args.has_key(_enum_arg.key()))
+                _enum_arg.parse(dev_args[_enum_arg.key()]);
+            _enforce_range(_double_arg, MIN_DOUBLE_ARG, MAX_DOUBLE_ARG);
+        }
+
+        constrained_device_args_t::num_arg<double>       _double_arg
+            {"double_arg", DEFAULT_DOUBLE_ARG};
+        constrained_device_args_t::num_arg<size_t>       _size_t_arg
+            {"size_t_arg", DEFAULT_SIZE_T_ARG};
+        constrained_device_args_t::bool_arg              _bool_arg
+            {"bool_arg", DEFAULT_BOOL_ARG};
+        constrained_device_args_t::enum_arg<test_enum_t> _enum_arg
+            {"enum_arg", DEFAULT_ENUM_ARG,
+                  {{"value1", VALUE1}, {"value2", VALUE2}, {"VALUE3", VALUE3}}};
+    };
+
+}
+
+BOOST_AUTO_TEST_CASE(test_constrained_device_args) {
+    test_device_args_t test_dev_args("double_arg=3.5,bool_arg=0,foo=bar");
+    BOOST_CHECK_EQUAL(test_dev_args.get_double_arg(), 3.5);
+    BOOST_CHECK_EQUAL(
+        test_dev_args.get_size_t_arg(),
+        DEFAULT_SIZE_T_ARG
+    );
+    BOOST_CHECK_EQUAL(test_dev_args.get_bool_arg(), false);
+    BOOST_CHECK_EQUAL(
+        test_dev_args.get_enum_arg(),
+        DEFAULT_ENUM_ARG
+    );
+    BOOST_REQUIRE_THROW(
+        test_dev_args.parse("double_arg=2e6"),
+        uhd::value_error
+    ); // Note: test_dev_args is now in a bad state until we fix it!
+    test_dev_args.parse("double_arg=2.6"),
+    test_dev_args.parse("enum_arg=vaLue2");
+    BOOST_CHECK_EQUAL(
+        test_dev_args.get_enum_arg(),
+        VALUE2
+    );
+    test_dev_args.parse("enum_arg=VALUE3");
+    BOOST_CHECK_EQUAL(
+        test_dev_args.get_enum_arg(),
+        VALUE3
+    );
+}
+