test: add results API tests

test/fitting/test-results.jl

@@ -0,0 +1,26 @@
+using Test, SpectralFitting
+
+include("../dummies.jl")
+
+dummy_data = make_dummy_dataset((E) -> (E^(-3.0)); units = u"counts / (s * keV)")
+model = PowerLaw()
+prob = FittingProblem(model, dummy_data)
+
+# test inference
+@inferred SpectralFitting._unpack_fitting_configuration(prob);
+
+result = fit(prob, LevenbergMarquadt())
+
+@test result[1].u ≈ [12.066, 3.0810] atol = 1e-3
+
+@test measure(ChiSquared(), result) ≈ result.χ2 rtol = 1e-3
+@test measure(ChiSquared(), result, [11.0, 2.0]) ≈ 281423.5 rtol = 1e-3
+# can measure different parameters
+@test measure(ChiSquared(), result[1], [11.0, 2.0]) ≈ 281423.5 rtol = 1e-3
+
+# check these don't error
+@test invoke_result(result) ≈ invoke_result(result[1])
+invoke_result(result, [11.0, 2.0])
+
+# mismatch
+@test_throws "" invoke_result(result, [11.0])

test/runtests.jl

@@ -95,6 +95,7 @@ end
     include("fitting/test-fit-simple-dataset.jl")
     include("fitting/test-cache.jl")
     include("fitting/test-binding.jl")
+    include("fitting/test-results.jl")
 
     @testset "powerlaws" begin
         include("fitting/test-fit-powerlaw.jl")