Nothing
context("mixing Munsell colors")
# reference spectra
data("munsell.spectra.wide")
test_that("spec2Munsell works as expected", {
# try a color, result should be identical chip
# depends on SO and illuminant
chip <- '10YR 3/3'
m <- spec2Munsell(munsell.spectra.wide[, chip], SO = 'CIE1931', illuminant = 'D65')
# object structure / contents
expect_true(inherits(m, 'data.frame'))
# same output as rgb2Munsell
expect_true(
all(
names(m) == c('hue', 'value', 'chroma', 'sigma')
)
)
# input == output
expect_true(
sprintf("%s %s/%s", m$hue, m$value, m$chroma) == chip
)
# expected dE00
expect_equal(m$sigma, 0.64280, tolerance = 1e-4)
})
test_that("supporting data match range of Munsell spectra", {
# standard illuminants + observers
data("spectral.reference")
expect_true(
all(
range(spectral.reference$w) == range(munsell.spectra.wide$wavelength)
)
)
})
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