Add new tests

Author: naveen521kk

.gitignore

@@ -16,7 +16,6 @@ eggs/
 .eggs/
 lib/
 lib64/
-windows/
 parts/
 sdist/
 var/

tests/test_pango.py

@@ -4,6 +4,12 @@
 import pangocairocffi
 import pangocffi
 
+rtl_text = """صباح الخير
+مرحبا جميعا"""
+
+width = 600
+height = 400
+
 
 def test_general_text_svgobject():
     """Checks number of submobjects generated when directly called using ``SVGMobject``"""
@@ -15,11 +21,11 @@ def test_general_text_svgobject():
     filename = os.path.join(folder, "hello.svg")
     a = PangoText(text, size=10)
     pangoManim = os.path.join(folder, a.text2hash() + ".svg")
-    surface = cairocffi.SVGSurface(filename, 600, 400)
+    surface = cairocffi.SVGSurface(filename, width, height)
     context = cairocffi.Context(surface)
     context.move_to(START_X, START_Y)
     layout = pangocairocffi.create_layout(context)
-    layout.set_width(pangocffi.units_from_double(600))
+    layout.set_width(pangocffi.units_from_double(width))
     fontdesc = pangocffi.FontDescription()
     fontdesc.set_size(pangocffi.units_from_double(size * 10))
     layout.set_font_description(fontdesc)
@@ -30,27 +36,92 @@ def test_general_text_svgobject():
     assert len(a.submobjects) == len(b.submobjects)
 
 
-def test_render_text_svgobject():
+def test_rtl_text_text_svgobject():
     """Checks number of submobjects generated when directly called using ``SVGMobject``"""
     size = 1
-    text = r"臂猿「黛比」帶著孩子"
+    text = rtl_text
+    folder = os.path.abspath(os.path.join("media", "texts"))
+    if not os.path.exists(folder):
+        os.makedirs(folder)
+    filename = os.path.join(folder, "hello.svg")
+    a = PangoText(text, size=1)
+    pangoManim = os.path.join(folder, a.text2hash() + ".svg")
+    surface = cairocffi.SVGSurface(filename, width, height)
+    context = cairocffi.Context(surface)
+    context.move_to(START_X, START_Y)
+    layout = pangocairocffi.create_layout(context)
+    layout.set_width(pangocffi.units_from_double(width))
+    fontdesc = pangocffi.FontDescription()
+    fontdesc.set_size(pangocffi.units_from_double(size * 10))
+    layout.set_font_description(fontdesc)
+    layout.set_text(text)
+    pangocairocffi.show_layout(context, layout)
+    surface.finish()
+    b = SVGMobject(filename)
+    assert len(a.submobjects) == len(b.submobjects)
+
+
+def test_font_face():
+    """Checks font face using submobject len"""
+    size = 1
+    text = rtl_text
+    font_face = "sans"
     folder = os.path.abspath(os.path.join("media", "texts"))
     if not os.path.exists(folder):
         os.makedirs(folder)
-    filename = os.path.join(folder, "hello1.svg")
-    a = PangoText(text, size=10, font="amiri")
+    filename = os.path.join(folder, "hello.svg")
+    a = PangoText(text, size=1, font=font_face)
     pangoManim = os.path.join(folder, a.text2hash() + ".svg")
-    surface = cairocffi.SVGSurface(filename, 600, 400)
+    surface = cairocffi.SVGSurface(filename, width, height)
     context = cairocffi.Context(surface)
     context.move_to(START_X, START_Y)
     layout = pangocairocffi.create_layout(context)
-    layout.set_width(pangocffi.units_from_double(600))
+    layout.set_width(pangocffi.units_from_double(width))
     fontdesc = pangocffi.FontDescription()
-    fontdesc.set_family("amiri")
+    fontdesc.set_family(font_face)
     fontdesc.set_size(pangocffi.units_from_double(size * 10))
     layout.set_font_description(fontdesc)
     layout.set_text(text)
     pangocairocffi.show_layout(context, layout)
     surface.finish()
     b = SVGMobject(filename)
     assert len(a.submobjects) == len(b.submobjects)
+
+
+def test_whether_svg_file_created():
+    """Checks Whether SVG file is created in desired location"""
+    a = PangoText("hello", size=1)
+    folder = os.path.abspath(os.path.join("media", "texts"))
+    if not os.path.exists(folder):
+        os.makedirs(folder)
+    theoPath = os.path.abspath(os.path.join(folder, a.text2hash() + ".svg"))
+    actualPath = os.path.abspath(a.text2svg())
+    assert theoPath == actualPath
+
+
+def test_tabs_replace():
+    """Checks whether are there in end svg image. Pango should handle tabs and line breaks."""
+    size = 1
+    folder = os.path.abspath(os.path.join("media", "texts"))
+    if not os.path.exists(folder):
+        os.makedirs(folder)
+    a = PangoText("hello\thi\nf")
+    assert a.text == "hellohif"
+    pangoManim = os.path.join(folder, a.text2hash() + ".svg")
+    filename = os.path.join(folder, "hello.svg")
+    surface = cairocffi.SVGSurface(filename, width, height)
+    context = cairocffi.Context(surface)
+    context.move_to(START_X, START_Y)
+    layout = pangocairocffi.create_layout(context)
+    layout.set_width(pangocffi.units_from_double(width))
+    fontdesc = pangocffi.FontDescription()
+    fontdesc.set_size(pangocffi.units_from_double(size * 10))
+    layout.set_font_description(fontdesc)
+    layout.set_text("hello\thi\nf")
+    pangocairocffi.show_layout(context, layout)
+    surface.finish()
+    b = SVGMobject(filename)
+    assert len(a.submobjects) == len(b.submobjects)
+
+
+test_tabs_replace()