Fix single letter text handling (#1939)

* Fix single letter text handling

Prevent unpacking of a single face into a wire

Author: adam-urbanczyk

cadquery/occ_impl/shapes.py

@@ -5843,7 +5843,7 @@ def text(
         font_i, NCollection_Utf8String(txt), theHAlign=theHAlign, theVAlign=theVAlign
     )
 
-    return clean(compound(_compound_or_shape(rv).faces()).fuse())
+    return clean(compound(_compound_or_shape(rv).Faces()).fuse())
 
 
 @text.register
@@ -5866,7 +5866,7 @@ def text(
     L = spine.Length()
 
     rv = []
-    for el in text(txt, size, font, path, kind, halign, valign):
+    for el in text(txt, size, font, path, kind, halign, valign).Faces():
         pos = el.BoundingBox().center.x
 
         # position
@@ -5900,7 +5900,7 @@ def text(
     tmp = text(txt, size, spine, False, font, path, kind, halign, valign)
 
     rv = []
-    for f in tmp.faces():
+    for f in tmp.Faces():
         rv.append(f.project(base, f.normalAt()))
 
     return _normalize(compound(rv))

tests/test_free_functions.py

@@ -468,6 +468,7 @@ def test_text():
     # test single letter
     r6 = text("C", 1)
 
+    assert isinstance(r6, Face)
     assert len(r6.Faces()) == 1
     assert len(r6.Wires()) == 1
 
@@ -479,6 +480,8 @@ def test_text():
     r7 = text("CQ", 1, spine)  # normal
     r8 = text("CQ", 1, spine, planar=True)  # planar
     r9 = text("CQ", 1, spine, cf)  # projected
+    r10 = text("C", 1, spine, planar=True)  # single letter, planar
+    r11 = text("C", 1, spine, cf)  # single letter, projected
 
     assert r7.faces(">>Z").Center().z > 0
     assert r7.faces("<<X").normalAt().dot(Vector(0, 0, 1)) == approx(0)
@@ -492,6 +495,14 @@ def test_text():
     assert r9.faces("<<X").normalAt().dot(Vector(0, 0, 1)) == approx(0)
     assert r9.faces("<<X").geomType() == "CYLINDER"
 
+    assert isinstance(r10, Face)
+    assert len(r10.Faces()) == 1
+    assert len(r10.Wires()) == 1
+
+    assert isinstance(r11, Face)
+    assert len(r11.Faces()) == 1
+    assert len(r11.Wires()) == 1
+
 
 #%% bool ops
 def test_operators():