Shadow() does not work when fixed-theta item selection is used

[SangdonLim]

Package Version

• TestDesign 1.3.3

Current Behavior

• Shadow() raises the following error when fixed-theta item selection is used:

Error in runAssembly(config, constraints, xdata = xdata_elg, objective = info) : 
  length of 'objective' must be 1000 or 1000

Expected Behavior

• Shadow() should not raise the above error.

Steps to Reproduce

library(TestDesign)
cfg <- createShadowTestConfig()
  item_selection = list(
    method = "FIXED",
    fixed_theta = 1
  )
)
o <- Shadow(cfg, constraints_science, true_theta = rnorm(1))