diff --git a/src/crop/crops.jl b/src/crop/crops.jl
index ccae89b5abe3497475fbf1dbb4d7f1fa58ab496b..fd1bef711e2d949804a9c1c6e1258716d98e39fe 100644
--- a/src/crop/crops.jl
+++ b/src/crop/crops.jl
@@ -5,9 +5,11 @@
 
 #XXX not sure whether it makes sense to have this as an agent type,
 # or perhaps better a grid property?
-
 """
-This is a docstring
+    FarmPlot
+
+This represents one field, i.e. a collection of pixels with the same management.
+This is the spatial unit with which the crop growth model and the farm model work.
 """
 @agent FarmPlot NoSpaceAgent begin
     pixels::Vector{Tuple{Int64, Int64}}
diff --git a/test/fields_jena.tif b/test/fields_jena.tif
new file mode 100644
index 0000000000000000000000000000000000000000..1d5e88a54c96f855db61aa135e1f6c62dd486f26
Binary files /dev/null and b/test/fields_jena.tif differ
diff --git a/test/landcover_jena.tif b/test/landcover_jena.tif
new file mode 100644
index 0000000000000000000000000000000000000000..839afe968b6e110aab2f8ea9dd44274c01ace912
Binary files /dev/null and b/test/landcover_jena.tif differ
diff --git a/test/test_parameters.toml b/test/test_parameters.toml
new file mode 100644
index 0000000000000000000000000000000000000000..f03b079b06ba7f6a9189ea0641b522af9c5f2262
--- /dev/null
+++ b/test/test_parameters.toml
@@ -0,0 +1,27 @@
+### Persephone - a socio-economic-ecological model of European agricultural landscapes.
+###
+### This configuration file is used for the test suite.
+###
+
+[core]
+configfile = "test_parameters.toml" # location of the configuration file
+landcovermap = "landcover_jena.tif" # location of the landcover map
+farmfieldsmap = "fields_jena.tif" # location of the field geometry map
+outdir = "results_testsuite" # location and name of the output folder
+loglevel = "debug" # verbosity level: "debug", "info", "quiet"
+seed = 1 # seed value for the RNG (0 -> random value)
+# dates to start and end the simulation
+startdate = 2020-01-01
+enddate = 2020-01-02
+
+[farm]
+farmmodel = "FieldManager" # which version of the farm model to use (not yet implemented)
+
+[nature]
+targetspecies = ["Wolpertinger", "Wyvern"] # list of target species to simulate
+popoutfreq = "daily" # output frequency population-level data, daily/monthly/yearly/end/never
+indoutfreq = "end" # output frequency individual-level data, daily/monthly/yearly/end/never
+	
+[crop]
+cropmodel = "linear" # crop growth model to use, "linear" or "aquacrop" (not yet implemented)
+