Add ifelse broadcast test

test/Fields/field.jl

@@ -109,6 +109,27 @@ end
     end
 end
 
+function ifelse_wrapper(a, b)
+    @. a.x = ifelse(a.x < b.x, 1, 2)
+    return nothing
+end
+
+@testset "Broadcasting ifelse" begin
+    FT = Float32
+    for space in TU.all_spaces(FT)
+        f = fill((; x = FT(1)), space)
+        g = fill((; x = FT(2)), space)
+        ifelse_wrapper(f, g) # Compile first
+        p_allocated = @allocated ifelse_wrapper(f, g)
+        if space isa Spaces.SpectralElementSpace1D
+            @test p_allocated == 0
+        else
+            @test_broken p_allocated == 0
+
+        end
+    end
+end
+
 # Requires `--check-bounds=yes`
 @testset "Constructing & broadcasting over empty fields" begin
     FT = Float32