Add some graphID test cases

test/graph_id/conftest.py

+import pytest
+from test.fixtures.graph_id import *

test/graph_id/test_graph_id.py

+"""
+B-ASIC test suite for GraphID.
+"""
+
+from b_asic.graph_id import GraphID
+
+import pytest
+
+def test_create_graph_id():
+    graph_id = GraphID("add", 1)
+
+    assert graph_id.graph_id_type == "add"
+    assert graph_id.graph_id_number == 1
+
+    graph_id2 = GraphID("", 2)
+
+    assert graph_id2.graph_id_type == ""
+    assert graph_id2.graph_id_number == 2
+
+    graph_id3 = GraphID("ABCDEFGHIJKLMNOPQRSTUVWXYZ", 3)
+
+    assert graph_id3.graph_id_type == "ABCDEFGHIJKLMNOPQRSTUVWXYZ"
+    assert graph_id3.graph_id_number == 3
+
+def test_graph_id_str(graph_ids):
+    assert str(graph_ids[0]) == "add1"
+    assert str(graph_ids[1]) == "add2"
+    assert str(graph_ids[2]) == "sig1"
+    assert str(graph_ids[3]) == "sig1"
+    assert str(graph_ids[4]) == "sub3"
+    assert str(graph_ids[5]) == "ÅÄÖ2"
+    assert str(graph_ids[6]) == "3"
+    assert str(graph_ids[7]) == "ABCDEFGHIJKLMNOPQRSTUVWXYZ4"
+
+
+
+
+