Adding basic yosys testing script

Author: aolofsson

tests/template.ys.j2

@@ -0,0 +1,11 @@
+# Read the Verilog source file
+read_verilog_file_list -f {{ cmdfile }}
+
+# Set the top module
+hierarchy -top {{ topmodule }}
+
+# Generic synthesis
+proc; opt; flatten; opt
+
+# Write synthesized netlist in Verilog
+write_verilog {{ netlist }}

tests/test_yosys.py

@@ -0,0 +1,46 @@
+import common
+import subprocess
+from jinja2 import Environment, FileSystemLoader
+
+def run_yosys(dlist):
+
+    env = Environment(loader=FileSystemLoader('.'))
+    template = env.get_template('template.ys.j2')
+
+    for item in dlist:
+        name = item.name()
+        cmdfile = f'{name}.f'
+        netlist =  f'{name}.vg'
+        # create .f cmd file
+        item.write_fileset(cmdfile, fileset='rtl')
+        topmodule = item.get_topmodule(fileset='rtl')
+
+        # clean up cmd file (yosys bug)
+        cleanfile = cmdfile + ".clean"
+
+        with open(cmdfile, "r") as f_in, open(cleanfile, "w") as f_out:
+            for line in f_in:
+                if "//" not in line.strip():
+                    f_out.write(line)
+
+        # create yosys script
+        context = {
+            'topmodule': topmodule,
+            'cmdfile': cleanfile,
+            'netlist' : netlist
+        }
+        output = template.render(context)
+        script = f"{name}.ys"
+        with open(script, 'w') as f:
+            f.write(output)
+        # run
+        subprocess.run(["yosys", "-s", script], check=True)
+
+def test_yosys_basic():
+    run_yosys(common.basic_list)
+
+def test_yosys_memory():
+    run_yosys(common.memory_list)
+
+def test_icarus_arithmetic():
+    run_yosys(common.arithmetic_list)