Add pytest for HdlDetect

Author: rodrigomelo9

tests/test_detect.py

@@ -0,0 +1,44 @@
+import pytest
+from hdltools.hdl_detect import HdlDetect
+
+
+code = {
+  'vhdl': """
+library IEEE;
+use IEEE.STD_LOGIC_1164.ALL;
+
+entity Example is
+  Port (
+    data_i : in  STD_LOGIC;
+    data_o : out STD_LOGIC
+  );
+end Example;
+
+architecture Behavioral of Example is
+begin
+  data_o <= data_i;
+end Behavioral;
+""",
+  'vlog': """
+module Example (
+  input  data_i,
+  output data_o
+);
+  assign data_o = data_i;
+endmodule
+""",
+  'slog': """
+module Example (
+  input  logic data_i,
+  output logic data_o
+);
+  assign data_o = data_i;
+endmodule
+"""
+}
+
+
+@pytest.mark.parametrize("lang", ['vhdl', 'vlog', 'slog'])
+def test_detect(lang):
+    obj = HdlDetect(code[lang])
+    assert obj.get_lang() == lang