Adding all project files

venv/Lib/site-packages/sympy/printing/tests/test_preview.py

@@ -0,0 +1,38 @@
+# -*- coding: utf-8 -*-
+
+from sympy.core.relational import Eq
+from sympy.core.symbol import Symbol
+from sympy.functions.elementary.piecewise import Piecewise
+from sympy.printing.preview import preview
+
+from io import BytesIO
+
+
+def test_preview():
+    x = Symbol('x')
+    obj = BytesIO()
+    try:
+        preview(x, output='png', viewer='BytesIO', outputbuffer=obj)
+    except RuntimeError:
+        pass  # latex not installed on CI server
+
+
+def test_preview_unicode_symbol():
+    # issue 9107
+    a = Symbol('α')
+    obj = BytesIO()
+    try:
+        preview(a, output='png', viewer='BytesIO', outputbuffer=obj)
+    except RuntimeError:
+        pass  # latex not installed on CI server
+
+
+def test_preview_latex_construct_in_expr():
+    # see PR 9801
+    x = Symbol('x')
+    pw = Piecewise((1, Eq(x, 0)), (0, True))
+    obj = BytesIO()
+    try:
+        preview(pw, output='png', viewer='BytesIO', outputbuffer=obj)
+    except RuntimeError:
+        pass  # latex not installed on CI server