Add unit test for standard cypclass dict library

tests/run/cypclass_builtin_dict.pyx

+# mode: run
+# tag: cpp, cpp11, pthread
+# cython: experimental_cpp_class_def=True, language_level=2
+
+from libcythonplus.dict cimport cypdict
+
+cdef cypclass Value:
+    int value
+    __init__(self, int i):
+        self.value = i
+
+cdef cypclass Index:
+    int index
+    __init__(self, int i):
+        self.index = i
+
+def test_comp_iteration():
+    """
+    >>> test_comp_iteration()
+    [0, 1, 2, 3, 4, 5, 6, 7, 8, 9]
+    """
+    d = cypdict[Index, Value]()
+    for i in range(10):
+        d[Index(i)] = Value(i)
+
+    return [key.index for key in d]
+
+def test_nogil_iteration():
+    """
+    >>> test_nogil_iteration()
+    [0, 1, 2, 3, 4, 5, 6, 7, 8, 9]
+    """
+    indices = []
+
+    with nogil:
+        d = cypdict[Index, Value]()
+        for i in range(10):
+            d[Index(i)] = Value(i)
+
+        for key in d:
+            with gil:
+                indices.append(key.index)
+
+    return indices
+
+def test_comp_keys_iteration():
+    """
+    >>> test_comp_keys_iteration()
+    [0, 1, 2, 3, 4, 5, 6, 7, 8, 9]
+    """
+    d = cypdict[Index, Value]()
+    for i in range(10):
+        d[Index(i)] = Value(i)
+
+    return [key.index for key in d.keys()]
+
+def test_nogil_keys_iteration():
+    """
+    >>> test_nogil_keys_iteration()
+    [0, 1, 2, 3, 4, 5, 6, 7, 8, 9]
+    """
+    indices = []
+
+    with nogil:
+        d = cypdict[Index, Value]()
+        for i in range(10):
+            d[Index(i)] = Value(i)
+
+        for key in d.keys():
+            with gil:
+                indices.append(key.index)
+
+    return indices
+
+def test_comp_values_iteration():
+    """
+    >>> test_comp_values_iteration()
+    [0, 1, 2, 3, 4, 5, 6, 7, 8, 9]
+    """
+    d = cypdict[Index, Value]()
+    for i in range(10):
+        d[Index(i)] = Value(i)
+
+    return [value.value for value in d.values()]
+
+def test_nogil_values_iteration():
+    """
+    >>> test_nogil_values_iteration()
+    [0, 1, 2, 3, 4, 5, 6, 7, 8, 9]
+    """
+    values = []
+
+    with nogil:
+        d = cypdict[Index, Value]()
+        for i in range(10):
+            d[Index(i)] = Value(i)
+
+        for value in d.values():
+            with gil:
+                values.append(value.value)
+
+    return values
+
+def test_comp_items_iteration():
+    """
+    >>> test_comp_items_iteration()
+    [(0, 0), (1, 1), (2, 2), (3, 3), (4, 4), (5, 5), (6, 6), (7, 7), (8, 8), (9, 9)]
+    """
+    d = cypdict[Index, Value]()
+    for i in range(10):
+        d[Index(i)] = Value(i)
+
+    return [(key.index, value.value) for (key, value) in d.items()]
+
+def test_nogil_items_iteration():
+    """
+    >>> test_nogil_items_iteration()
+    [(0, 0), (1, 1), (2, 2), (3, 3), (4, 4), (5, 5), (6, 6), (7, 7), (8, 8), (9, 9)]
+    """
+    items = []
+
+    with nogil:
+        d = cypdict[Index, Value]()
+        for i in range(10):
+            d[Index(i)] = Value(i)
+
+        for item in d.items():
+            with gil:
+                items.append((item.first.index, item.second.value))
+
+    return items
+
+def test_getitem_exception():
+    """
+    >>> test_getitem_exception()
+    'Getting nonexistent item'
+    1
+    """
+    try:
+        d = cypdict[Index, Value]()
+        with nogil:
+            v = d[Index()]
+            with gil:
+                return 0
+    except KeyError as e:
+        print(e)
+        return 1
+
+def test_delitem_exception():
+    """
+    >>> test_delitem_exception()
+    'Deleting nonexistent item'
+    1
+    """
+    try:
+        d = cypdict[Index, Value]()
+        with nogil:
+            del d[Index()]
+            with gil:
+                return 0
+    except KeyError as e:
+        print(e)
+        return 1
+