```
context("test-improperinput")
test_that("improper input detected", {
xI <- matrix(1L, 3, 2)
expect_error(QREcon(xI), 'x is not a numeric matrix')
xC <- 1.
expect_error(QREcon(xC), 'x is not a numeric matrix')
x <- matrix(c(1.,1.,1.,2.,3.,5.), 3, 2)
expect_error(QREcon(t(x)), 'The number of rows in x must be greater equal to the number
of columns in x')
q <- matrix(0., 3, 2)
r <- matrix(0., 2, 2)
expect_error(QREcon(x, q),'Both q and r must be either both missing or both specified')
expect_error(QREcon(x, r=r), 'Both q and r must be either both missing or both specified')
qI <- xI
expect_error(QREcon(x, qI, r), 'q is not a numeric matrix')
qC <- 1.
expect_error(QREcon(x, qC, r), 'q is not a numeric matrix')
rI <- xI
expect_error(QREcon(x, q, rI), 'r is not a numeric matrix')
rC <- 1.
expect_error(QREcon(x, q, rC), 'r is not a numeric matrix')
qWd <- matrix(0., 3, 3)
expect_error(QREcon(x, qWd, r), 'q must have the same dimenstions as x')
rWd <- matrix(0., 3, 3)
expect_error(QREcon(x, q, rWd), 'r must be a square matrix with the same number of columns as x')
})
```

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