context("DDFunctions")
expect_similar <- function(input, expected) {
eval(bquote(expect_lt(abs(input - expected), 0.01)))
}
test_that("degree_days function works as expected", {
expect_similar(degree_days(T_min=7, T_max=14, LDT=12, UDT=33, method="single.sine"), 0.47)
expect_similar(degree_days(T_min=7, T_max=10, LDT=12, UDT=33, method="single.sine"), 0)
expect_similar(degree_days(T_min=13, T_max=14, LDT=12, UDT=33, method="single.sine"), 1.5)
expect_similar(degree_days(T_min=35, T_max=40, LDT=12, UDT=33, method="single.sine"), 5)
expect_similar(degree_days(T_min=13, T_max=40, LDT=12, UDT=33, method="single.sine"), 12.94)
expect_similar(degree_days(T_min=7, T_max=40, LDT=12, UDT=33, method="single.sine"), 10.94)
expect_similar(degree_days(T_min=7, T_max=20, LDT=12, UDT=33, method="double.sine"), 2.87)
expect_similar(degree_days(T_min=7, T_max=10, LDT=12, UDT=33, method="double.sine"), 0)
expect_similar(degree_days(T_min=13, T_max=14, LDT=12, UDT=33, method="double.sine"), 1.5)
expect_similar(degree_days(T_min=35, T_max=40, LDT=12, UDT=33, method="double.sine"), 21)
expect_similar(degree_days(T_min=13, T_max=40, LDT=12, UDT=33, method="double.sine"), 12.94)
expect_similar(degree_days(T_min=7, T_max=40, LDT=12, UDT=33, method="double.sine"), 10.94)
expect_similar(degree_days(T_min=7, T_max=14, LDT=12, UDT=33, method="single.triangulation"), 0.29)
expect_similar(degree_days(T_min=7, T_max=10, LDT=12, UDT=33, method="single.triangulation"), 0)
expect_similar(degree_days(T_min=13, T_max=14, LDT=12, UDT=33, method="single.triangulation"), 1.5)
expect_similar(degree_days(T_min=35, T_max=40, LDT=12, UDT=33, method="single.triangulation"), 21)
expect_similar(degree_days(T_min=13, T_max=40, LDT=12, UDT=33, method="single.triangulation"), 13.59)
expect_similar(degree_days(T_min=7, T_max=40, LDT=12, UDT=33, method="single.triangulation"), 11.14)
expect_similar(degree_days(T_min=7, T_max=20, LDT=12, UDT=33, method="double.triangulation"), 2.46)
expect_similar(degree_days(T_min=7, T_max=10, LDT=12, UDT=33, method="double.triangulation"), 0)
expect_similar(degree_days(T_min=13, T_max=32, LDT=10, UDT=33, method="double.triangulation"), 1.25)
expect_similar(degree_days(T_min=35, T_max=40, LDT=12, UDT=33, method="double.triangulation"), 21)
expect_similar(degree_days(T_min=13, T_max=40, LDT=12, UDT=33, method="double.triangulation"), 28.09)
expect_similar(degree_days(T_min=7, T_max=40, LDT=12, UDT=33, method="double.triangulation"), 11.14)
})
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