1 files changed, 128 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..c81221aac
--- /dev/null
+++ b/host/test/gain_handler_test.cpp
@@ -0,0 +1,128 @@
+//
+// 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/gain_handler.hpp>
+#include <uhd/dict.hpp>
+#include <iostream>
+
+using namespace uhd;
+
+enum prop_t{
+    PROP_GAIN,
+    PROP_GAIN_MIN,
+    PROP_GAIN_MAX,
+    PROP_GAIN_STEP,
+    PROP_GAIN_NAMES
+};
+
+class gainful_obj : public wax::obj{
+public:
+    gainful_obj(void){
+        _gain_handler = gain_handler::sptr(new gain_handler(
+            this, PROP_GAIN, PROP_GAIN_MIN, PROP_GAIN_MAX, PROP_GAIN_STEP, PROP_GAIN_NAMES
+        ));
+        _gains["g0"] = 0;
+        _gains["g1"] = 0;
+        _gains_min["g0"] = -10;
+        _gains_min["g1"] = 0;
+        _gains_max["g0"] = 0;
+        _gains_max["g1"] = 100;
+        _gains_step["g0"] = .1;
+        _gains_step["g1"] = 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(wax::cast<prop_t>(key)){
+        case PROP_GAIN:
+            val = _gains[name];
+            return;
+
+        case PROP_GAIN_MIN:
+            val = _gains_min[name];
+            return;
+
+        case PROP_GAIN_MAX:
+            val = _gains_max[name];
+            return;
+
+        case PROP_GAIN_STEP:
+            val = _gains_step[name];
+            return;
+
+        case PROP_GAIN_NAMES:
+            val = prop_names_t(_gains.get_keys());
+            return;
+        }
+    }
+
+    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(wax::cast<prop_t>(key)){
+        case PROP_GAIN:
+            _gains[name] = wax::cast<gain_t>(val);
+            return;
+
+        case PROP_GAIN_MIN:
+        case PROP_GAIN_MAX:
+        case PROP_GAIN_STEP:
+        case PROP_GAIN_NAMES:
+            throw std::runtime_error("cannot set this property");
+        }
+    }
+
+    gain_handler::sptr _gain_handler;
+    uhd::dict<std::string, gain_t> _gains;
+    uhd::dict<std::string, gain_t> _gains_min;
+    uhd::dict<std::string, gain_t> _gains_max;
+    uhd::dict<std::string, gain_t> _gains_step;
+
+};
+
+BOOST_AUTO_TEST_CASE(test_gain_handler){
+    std::cout << "Testing the gain handler..." << std::endl;
+    gainful_obj go0;
+
+    BOOST_CHECK_THROW(
+        wax::cast<gain_t>(go0[named_prop_t(PROP_GAIN, "fail")]),
+        std::invalid_argument
+    );
+
+    std::cout << "verifying the overall min, max, step" << std::endl;
+    BOOST_CHECK_EQUAL(wax::cast<gain_t>(go0[PROP_GAIN_MIN]), gain_t(-10));
+    BOOST_CHECK_EQUAL(wax::cast<gain_t>(go0[PROP_GAIN_MAX]), gain_t(100));
+    BOOST_CHECK_EQUAL(wax::cast<gain_t>(go0[PROP_GAIN_STEP]), gain_t(1.5));
+
+    std::cout << "verifying the overall gain" << std::endl;
+    go0[named_prop_t(PROP_GAIN, "g0")] = gain_t(-5);
+    go0[named_prop_t(PROP_GAIN, "g1")] = gain_t(30);
+    BOOST_CHECK_EQUAL(wax::cast<gain_t>(go0[PROP_GAIN]), gain_t(25));
+}