added unit tests for param expansion

Author: danovaro

tests/test_expand.cc

@@ -402,6 +402,39 @@ CASE( "test_metkit_expand_param" ) {
 
         EXPECT_EQUAL(params[0], "140120");
     }
+    {
+        const char* text = "retrieve,class=od,expver=1,stream=enwh,date=-1,time=0000,type=pf,levtype=sfc,step=24,param=p1ww";
+        MarsRequest r = MarsRequest::parse(text);
+        auto params = r.values("param");
+        EXPECT_EQUAL(params.size(), 1);
+
+        EXPECT_EQUAL(params[0], "140223");
+    }
+    {
+        const char* text = "retrieve,class=od,expver=1,stream=waef,date=-1,time=0000,type=cf,levtype=sfc,step=24,param=WSK/MWP";
+        MarsRequest r = MarsRequest::parse(text);
+        auto params = r.values("param");
+        EXPECT_EQUAL(params.size(), 2);
+
+        EXPECT_EQUAL(params[0], "140252");
+        EXPECT_EQUAL(params[1], "140232");
+    }
+    {
+        const char* text = "retrieve,class=od,expver=1,stream=eefo,date=-1,time=0000,type=fcmean,levtype=sfc,step=24,param=MSL";
+        MarsRequest r = MarsRequest::parse(text);
+        auto params = r.values("param");
+        EXPECT_EQUAL(params.size(), 1);
+
+        EXPECT_EQUAL(params[0], "151");
+    }
+    {
+        const char* text = "retrieve,class=od,expver=1,stream=eefo,date=-1,time=0000,type=fcmean,levtype=sfc,step=24,param=strda";
+        MarsRequest r = MarsRequest::parse(text);
+        auto params = r.values("param");
+        EXPECT_EQUAL(params.size(), 1);
+
+        EXPECT_EQUAL(params[0], "171175");
+    }
 }
 
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