Nothing

```
test_that("vr functions work correctly", {
### test vr_U
U1 <- rbind(
c(0, 0, 0, 0),
c(0.5, 0.2, 0.1, 0),
c(0, 0.3, 0.3, 0.1),
c(0, 0, 0.5, 0.6)
)
surv1 <- vr_survival(U1)
expect_type(surv1, "double")
expect_length(surv1, 1)
surv2 <- vr_survival(U1, exclude_col = 4)
expect_true(surv2 != surv1)
grow1 <- vr_growth(U1)
expect_type(grow1, "double")
expect_length(grow1, 1)
grow2 <- vr_growth(U1, posU = matrix(TRUE, nrow = 4, ncol = 4))
expect_true(grow2 != grow1)
shri1 <- vr_shrinkage(U1)
expect_type(shri1, "double")
expect_length(shri1, 1)
shri2 <- vr_shrinkage(U1, exclude_row = 2:3)
expect_true(is.na(shri2))
stas1 <- vr_stasis(U1)
expect_type(stas1, "double")
expect_length(stas1, 1)
stas2 <- vr_stasis(U1, posU = matrix(TRUE, nrow = 4, ncol = 4))
expect_true(stas2 != stas1)
dent1 <- vr_dorm_enter(U1, dorm_stages = 4)
expect_type(dent1, "double")
expect_length(dent1, 1)
dexi1 <- vr_dorm_exit(U1, dorm_stages = 4)
expect_type(dexi1, "double")
expect_length(dexi1, 1)
# reproduction
R1 <- rbind(
c(0, 0, 1.1, 1.6),
c(0, 0, 0.8, 0.4),
c(0, 0, 0, 0),
c(0, 0, 0, 0)
)
fecu1 <- vr_fecundity(U1, R1)
expect_type(fecu1, "double")
expect_length(fecu1, 1)
# weighting
v <- popdemo::eigs(U1 + R1, what = "rv") # reproductive value
fecu2 <- vr_fecundity(U1, R1, weights_row = v)
expect_true(fecu2 != fecu1)
# no survival in a stage with reproduction
U2 <- rbind(
c(0, 0, 0, 0),
c(0.5, 0.2, 0.1, 0),
c(0, 0.3, 0.3, 0),
c(0, 0, 0.5, 0)
)
fecu3 <- vr_fecundity(U2, R1)
expect_true(fecu3 != fecu1)
})
test_that("vr functions warn and fail gracefully", {
expect_error(vr_survival(mat_u_na))
expect_error(vr_growth(mat_u_na))
expect_error(vr_shrinkage(mat_u_na))
expect_error(vr_stasis(mat_u_na))
expect_error(vr_fecundity(mat_u_na))
})
```

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