chore(test): fstring

Author: litlighilit

tests/asserts/fstring.py

@@ -0,0 +1,30 @@
+
+assert f"" == ""
+
+assert f"asd" == "asd"
+assert f"as\nd" == "as\nd"
+assert fr"as\nd" == r"as\nd"
+
+a = 123
+assert f"as{a}d$" == r"as123d$"
+
+st = "123"
+assert f"as0{st:.2}d" == r"as012d"
+
+assert f"as0{st:.2}dac{43.5}.$" == r"as012dac43.5.$"
+
+assert f"as0{st!r}dac{43.5 + 1}.$" == r"as0'123'dac44.5.$"
+
+
+assert f"asb{st:.{1}{'s'}}dac{43.5 + 1}.$" == r"asb1dac44.5.$"
+
+assert f"""asb{st!r}dac{43.5 + 1}.$""" == r"""asb'123'dac44.5.$"""
+
+assert f"""b
+asb{st!r}dac{43.5 + 1}
+.$""" == """b\nasb'123'dac44.5\n.$"""
+
+
+assert f"asb{ {st} }dac{43.5 + 1}.$" == r"asb{'123'}dac44.5.$"
+
+assert f"0^{st=:.2}$1" == r"0^st=12$1"