1 files changed, 121 insertions, 0 deletions
diff --git a/host/test/gain_handler_test.cpp b/host/test/gain_handler_test.cpp
new file mode 100644
index 000000000..5a9f2b714
--- /dev/null
+++ b/host/test/gain_handler_test.cpp
@@ -0,0 +1,121 @@
+//
+// Copyright 2010 Ettus Research LLC
+//
+// This program is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with this program.  If not, see <http://www.gnu.org/licenses/>.
+//
+
+#include <boost/test/unit_test.hpp>
+#include <uhd/utils/gain_handler.hpp>
+#include <uhd/types/ranges.hpp>
+#include <uhd/types/dict.hpp>
+#include <uhd/utils/props.hpp>
+#include <boost/bind.hpp>
+#include <iostream>
+
+using namespace uhd;
+
+enum prop_t{
+    PROP_GAIN_VALUE,
+    PROP_GAIN_RANGE,
+    PROP_GAIN_NAMES
+};
+
+class gainful_obj : public wax::obj{
+public:
+    gainful_obj(void){
+        //initialize gain props struct
+        gain_handler::props_t gain_props;
+        gain_props.value = PROP_GAIN_VALUE;
+        gain_props.range = PROP_GAIN_RANGE;
+        gain_props.names = PROP_GAIN_NAMES;
+        //make a new gain handler
+        _gain_handler = gain_handler::make(
+            this->get_link(), gain_props,
+            boost::bind(&gain_handler::is_equal<prop_t>, _1, _2)
+        );
+        _gain_values["g0"] = 0;
+        _gain_values["g1"] = 0;
+        _gain_ranges["g0"] = gain_range_t(-10, 0, float(.1));
+        _gain_ranges["g1"] = gain_range_t(0, 100, float(1.5));
+    }
+
+    ~gainful_obj(void){}
+
+private:
+    void get(const wax::obj &key_, wax::obj &val){
+        if (_gain_handler->intercept_get(key_, val)) return;
+
+        wax::obj key; std::string name;
+        boost::tie(key, name) = extract_named_prop(key_);
+
+        //handle the get request conditioned on the key
+        switch(key.as<prop_t>()){
+        case PROP_GAIN_VALUE:
+            val = _gain_values[name];
+            return;
+
+        case PROP_GAIN_RANGE:
+            val = _gain_ranges[name];
+            return;
+
+        case PROP_GAIN_NAMES:
+            val = _gain_values.keys();
+            return;
+
+        default: UHD_THROW_PROP_GET_ERROR();
+        }
+    }
+
+    void set(const wax::obj &key_, const wax::obj &val){
+        if (_gain_handler->intercept_set(key_, val)) return;
+
+        wax::obj key; std::string name;
+        boost::tie(key, name) = extract_named_prop(key_);
+
+        //handle the get request conditioned on the key
+        switch(key.as<prop_t>()){
+        case PROP_GAIN_VALUE:
+            _gain_values[name] = val.as<float>();
+            return;
+
+        default: UHD_THROW_PROP_SET_ERROR();
+        }
+    }
+
+    gain_handler::sptr _gain_handler;
+    uhd::dict<std::string, float> _gain_values;
+    uhd::dict<std::string, gain_range_t> _gain_ranges;
+
+};
+
+BOOST_AUTO_TEST_CASE(test_gain_handler){
+    std::cout << "Testing the gain handler..." << std::endl;
+    gainful_obj go0;
+
+    BOOST_CHECK_THROW(
+        go0[named_prop_t(PROP_GAIN_VALUE, "fail")].as<float>(),
+        std::exception
+    );
+
+    std::cout << "verifying the overall min, max, step" << std::endl;
+    gain_range_t gain = go0[PROP_GAIN_RANGE].as<gain_range_t>();
+    BOOST_CHECK_EQUAL(gain.min, float(-10));
+    BOOST_CHECK_EQUAL(gain.max, float(100));
+    BOOST_CHECK_EQUAL(gain.step, float(1.5));
+
+    std::cout << "verifying the overall gain" << std::endl;
+    go0[named_prop_t(PROP_GAIN_VALUE, "g0")] = float(-5);
+    go0[named_prop_t(PROP_GAIN_VALUE, "g1")] = float(30);
+    BOOST_CHECK_EQUAL(go0[PROP_GAIN_VALUE].as<float>(), float(25));
+}