When there are 0 flu tests, subtype percent positivity should be null

Author: cchuong

src/acquisition/rvdss/pull_historic.py

@@ -300,6 +300,10 @@ def create_percent_positive_detection_table(table,modified_date,start_year, flu=
 
         table["flu_positive_tests"] =  table["flua_positive_tests"] +  table["flub_positive_tests"]
         table["flu_pct_positive"] =   (table["flu_positive_tests"]/table["flu_tests"])*100
+        
+        table.loc[table["flu_tests"] == 0,"flua_pct_positive"] = np.nan  
+        table.loc[table["flu_tests"] == 0,"flub_pct_positive"] = np.nan  
+        
     else:
         table[virus+"_positive_tests"] = (table[virus+"_pct_positive"]/100) *table[virus+"_tests"]
 

testdata/acquisition/rvdss/formatted_flu_positive_tests.csv

@@ -2,12 +2,12 @@ epiweek,time_value,issue,geo_type,geo_value,flua_pct_positive,flub_pct_positive,
 201635,2016-09-03,2017-01-25,nation,ca,0.11,0,1862,2.0482,0,2.0482,0.11
 201635,2016-09-03,2017-01-25,region,atlantic,0,0,79,0,0,0,0
 201635,2016-09-03,2017-01-25,province,qc,0,0,431,0,0,0,0
-201635,2016-09-03,2017-01-25,province,on,0.18,0,568,1.0224,0,1.0224,0.18
+201635,2016-09-03,2017-01-25,province,on,NA,NA,0,0,0,0,NA
 201635,2016-09-03,2017-01-25,region,prairies,0.16,0,616,0.9856,0,0.9856,0.16
 201635,2016-09-03,2017-01-25,province,bc,0,0,151,0,0,0,0
 201635,2016-09-03,2017-01-25,region,territories,0,0,17,0,0,0,0
 201636,2016-09-10,2017-01-25,nation,ca,0.49,0.55,1630,7.986999999999999,8.965000000000002,16.952,1.04
-201636,2016-09-10,2017-01-25,region,atlantic,0,0,55,0,0,0,0
+201636,2016-09-10,2017-01-25,region,atlantic,NA,NA,0,0,0,0,NA
 201636,2016-09-10,2017-01-25,province,qc,0.25,0,400,1,0,1,0.25
 201636,2016-09-10,2017-01-25,province,on,0.21,0.62,481,1.0101,2.9821999999999997,3.9923,0.83
 201636,2016-09-10,2017-01-25,region,prairies,0.18,0.7,571,1.0278,3.997,5.0248,0.88

testdata/acquisition/rvdss/week3_20162017.html

@@ -14875,7 +14875,7 @@
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@@ -15027,7 +15027,7 @@
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