Initial commit

tests/test_cwcwidth.py

@@ -0,0 +1,49 @@
+import unittest
+from cwcwidth import wcwidth, wcswidth
+
+
+class Tests(unittest.TestCase):
+    def exec_test(
+        self, phrase, individual_expected_lengths, expected_length=None, n=None
+    ):
+        if expected_length is None:
+            expected_length = sum(individual_expected_lengths)
+        self.assertEquals(
+            individual_expected_lengths,
+            tuple(map(wcwidth, phrase if n is None else phrase[:n])),
+        )
+        self.assertEquals(expected_length, wcswidth(phrase, n))
+
+    def test_hello_jp(self):
+        """Width of Japanese phrase: コンニチハ, セカイ!"""
+        self.exec_test("コンニチハ, セカイ!", (2, 2, 2, 2, 2, 1, 1, 2, 2, 2, 1))
+
+    def test_wcswidth_substr(self):
+        """Test wcswidth() optional 2nd parameter, ``n``."""
+        self.exec_test("コンニチハ, セカイ!", (2, 2, 2, 2, 2, 1, 1), n=7)
+
+    def test_null_width_0(self):
+        """NULL (0) reports width 0."""
+        self.exec_test("abc\x00def", (1, 1, 1, 0, 1, 1, 1))
+        self.exec_test("abc\x00def", (1, 1, 1, 0, 1, 1, 1), n=7)
+
+    def test_control_c0_width_negative_1(self):
+        """CSI (Control sequence initiate) reports width -1."""
+        self.exec_test("\x1b[0m", (-1, 1, 1, 1), expected_length=-1)
+
+    def test_combining_width_negative_1(self):
+        """Simple test combining reports total width of 4."""
+        self.exec_test("--\u05bf--", (1, 1, 0, 1, 1))
+
+    def test_combining_cafe(self):
+        """Phrase cafe + COMBINING ACUTE ACCENT is café of length 4."""
+        self.exec_test("cafe\u0301", (1, 1, 1, 1, 0))
+
+    def test_combining_enclosing(self):
+        """CYRILLIC CAPITAL LETTER A + COMBINING CYRILLIC HUNDRED THOUSANDS SIGN is А҈ of length 1."""
+        expect_length_each = (1, 0)
+        self.exec_test("\u0410\u0488", (1, 0))
+
+    def test_combining_spacing(self):
+        """Balinese kapal (ship) is ᬓᬨᬮ᭄ of length 4."""
+        self.exec_test("\u1B13\u1B28\u1B2E\u1B44", (1, 1, 1, 1))