1 files changed, 120 insertions, 0 deletions
diff --git a/gerbonara/tests/test_utils.py b/gerbonara/tests/test_utils.py
new file mode 100644
index 0000000..6f243c8
--- /dev/null
+++ b/gerbonara/tests/test_utils.py
@@ -0,0 +1,120 @@
+#! /usr/bin/env python
+# -*- coding: utf-8 -*-
+#
+# Author: Hamilton Kibbe <ham@hamiltonkib.be>
+# Author: Jan Götte <code@jaseg.de>
+#
+
+import pytest
+from ..cam import FileSettings
+
+
+def test_zero_suppression():
+    # Default format
+    settings = FileSettings(number_format=(2,5), zeros='leading')
+    test_cases = [
+        ("1", 0.00001),
+        ("10", 0.0001),
+        ("100", 0.001),
+        ("1000", 0.01),
+        ("10000", 0.1),
+        ("100000", 1.0),
+        ("1000000", 10.0),
+        ("-1", -0.00001),
+        ("-10", -0.0001),
+        ("-100", -0.001),
+        ("-1000", -0.01),
+        ("-10000", -0.1),
+        ("-100000", -1.0),
+        ("-1000000", -10.0),
+        ("0", 0.0),
+    ]
+
+    assert settings.write_gerber_value(0.000000001) == "0"
+
+    for string, value in test_cases:
+        assert value == settings.parse_gerber_value(string)
+        assert string == settings.write_gerber_value(value)
+
+    settings = FileSettings(number_format=(2,5), zeros='trailing')
+    test_cases = [
+        ("1", 10.0),
+        ("01", 1.0),
+        ("001", 0.1),
+        ("0001", 0.01),
+        ("00001", 0.001),
+        ("000001", 0.0001),
+        ("0000001", 0.00001),
+        ("-1", -10.0),
+        ("-01", -1.0),
+        ("-001", -0.1),
+        ("-0001", -0.01),
+        ("-00001", -0.001),
+        ("-000001", -0.0001),
+        ("-0000001", -0.00001),
+        ("0", 0.0),
+    ]
+
+    assert settings.write_gerber_value(0.000000001) == "0"
+
+    for string, value in test_cases:
+        assert value == settings.parse_gerber_value(string)
+        assert string == settings.write_gerber_value(value)
+
+
+def test_format():
+    test_cases = [
+        ((2, 7), "1", 0.0000001),
+        ((2, 6), "1", 0.000001),
+        ((2, 5), "1", 0.00001),
+        ((2, 4), "1", 0.0001),
+        ((2, 3), "1", 0.001),
+        ((2, 2), "1", 0.01),
+        ((2, 1), "1", 0.1),
+        ((2, 7), "-1", -0.0000001),
+        ((2, 6), "-1", -0.000001),
+        ((2, 5), "-1", -0.00001),
+        ((2, 4), "-1", -0.0001),
+        ((2, 3), "-1", -0.001),
+        ((2, 2), "-1", -0.01),
+        ((2, 1), "-1", -0.1),
+        ((2, 6), "0", 0),
+    ]
+    for fmt, string, value in test_cases:
+        settings = FileSettings(number_format=fmt, zeros='leading')
+        assert value == settings.parse_gerber_value(string)
+        assert string == settings.write_gerber_value(value)
+
+    test_cases = [
+        ((6, 5), "1", 100000.0),
+        ((5, 5), "1", 10000.0),
+        ((4, 5), "1", 1000.0),
+        ((3, 5), "1", 100.0),
+        ((2, 5), "1", 10.0),
+        ((1, 5), "1", 1.0),
+        ((6, 5), "-1", -100000.0),
+        ((5, 5), "-1", -10000.0),
+        ((4, 5), "-1", -1000.0),
+        ((3, 5), "-1", -100.0),
+        ((2, 5), "-1", -10.0),
+        ((1, 5), "-1", -1.0),
+        ((2, 5), "0", 0),
+    ]
+    for fmt, string, value in test_cases:
+        settings = FileSettings(number_format=fmt, zeros='trailing')
+        assert value == settings.parse_gerber_value(string)
+        assert string == settings.write_gerber_value(value)
+
+def test_parse_format_validation():
+    for fmt in (7,5), (5,8), (13,1):
+        with pytest.raises(ValueError):
+            settings = FileSettings(number_format=fmt)
+            settings.parse_gerber_value('00001111')
+
+
+def test_write_format_validation():
+    for fmt in (7,5), (5,8), (13,1):
+        with pytest.raises(ValueError):
+            settings = FileSettings(number_format=fmt)
+            settings.write_gerber_value(69.0)
+