mirror of
https://github.com/httprunner/httprunner.git
synced 2026-05-13 17:29:56 +08:00
424 lines
13 KiB
Python
424 lines
13 KiB
Python
import ast
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import builtins
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import re
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from typing import Any, Set, Text, Callable, List, Dict
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from httprunner import loader, utils, exceptions
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from httprunner.schema import VariablesMapping, FunctionsMapping
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absolute_http_url_regexp = re.compile(r"^https?://", re.I)
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# use $$ to escape $ notation
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dolloar_regex_compile = re.compile(r"\$\$")
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# variable notation, e.g. ${var} or $var
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variable_regex_compile = re.compile(r"\$\{(\w+)\}|\$(\w+)")
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# function notation, e.g. ${func1($var_1, $var_3)}
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function_regex_compile = re.compile(r"\$\{(\w+)\(([\$\w\.\-/\s=,]*)\)\}")
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def parse_string_value(str_value: Text) -> Any:
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""" parse string to number if possible
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e.g. "123" => 123
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"12.2" => 12.3
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"abc" => "abc"
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"$var" => "$var"
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"""
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try:
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return ast.literal_eval(str_value)
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except ValueError:
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return str_value
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except SyntaxError:
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# e.g. $var, ${func}
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return str_value
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def build_url(base_url, path):
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""" prepend url with base_url unless it's already an absolute URL """
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if absolute_http_url_regexp.match(path):
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return path
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elif base_url:
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return "{}/{}".format(base_url.rstrip("/"), path.lstrip("/"))
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else:
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raise exceptions.ParamsError("base url missed!")
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def regex_findall_variables(content: Text) -> List[Text]:
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""" extract all variable names from content, which is in format $variable
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Args:
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content (str): string content
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Returns:
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list: variables list extracted from string content
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Examples:
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>>> regex_findall_variables("$variable")
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["variable"]
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>>> regex_findall_variables("/blog/$postid")
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["postid"]
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>>> regex_findall_variables("/$var1/$var2")
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["var1", "var2"]
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>>> regex_findall_variables("abc")
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[]
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"""
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try:
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vars_list = []
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for var_tuple in variable_regex_compile.findall(content):
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vars_list.append(var_tuple[0] or var_tuple[1])
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return vars_list
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except TypeError:
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return []
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def regex_findall_functions(content: Text) -> List[Text]:
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""" extract all functions from string content, which are in format ${fun()}
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Args:
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content (str): string content
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Returns:
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list: functions list extracted from string content
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Examples:
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>>> regex_findall_functions("${func(5)}")
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["func(5)"]
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>>> regex_findall_functions("${func(a=1, b=2)}")
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["func(a=1, b=2)"]
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>>> regex_findall_functions("/api/1000?_t=${get_timestamp()}")
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["get_timestamp()"]
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>>> regex_findall_functions("/api/${add(1, 2)}")
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["add(1, 2)"]
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>>> regex_findall_functions("/api/${add(1, 2)}?_t=${get_timestamp()}")
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["add(1, 2)", "get_timestamp()"]
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"""
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try:
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return function_regex_compile.findall(content)
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except TypeError:
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return []
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def extract_variables(content: Any) -> Set:
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""" extract all variables in content recursively.
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"""
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if isinstance(content, (list, set, tuple)):
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variables = set()
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for item in content:
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variables = variables | extract_variables(item)
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return variables
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elif isinstance(content, dict):
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variables = set()
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for key, value in content.items():
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variables = variables | extract_variables(value)
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return variables
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elif isinstance(content, str):
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return set(regex_findall_variables(content))
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return set()
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def parse_function_params(params: Text) -> Dict:
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""" parse function params to args and kwargs.
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Args:
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params (str): function param in string
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Returns:
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dict: function meta dict
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{
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"args": [],
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"kwargs": {}
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}
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Examples:
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>>> parse_function_params("")
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{'args': [], 'kwargs': {}}
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>>> parse_function_params("5")
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{'args': [5], 'kwargs': {}}
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>>> parse_function_params("1, 2")
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{'args': [1, 2], 'kwargs': {}}
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>>> parse_function_params("a=1, b=2")
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{'args': [], 'kwargs': {'a': 1, 'b': 2}}
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>>> parse_function_params("1, 2, a=3, b=4")
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{'args': [1, 2], 'kwargs': {'a':3, 'b':4}}
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"""
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function_meta = {"args": [], "kwargs": {}}
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params_str = params.strip()
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if params_str == "":
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return function_meta
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args_list = params_str.split(",")
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for arg in args_list:
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arg = arg.strip()
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if "=" in arg:
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key, value = arg.split("=")
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function_meta["kwargs"][key.strip()] = parse_string_value(value.strip())
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else:
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function_meta["args"].append(parse_string_value(arg))
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return function_meta
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def get_mapping_variable(
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variable_name: Text, variables_mapping: VariablesMapping
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) -> Any:
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""" get variable from variables_mapping.
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Args:
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variable_name (str): variable name
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variables_mapping (dict): variables mapping
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Returns:
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mapping variable value.
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Raises:
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exceptions.VariableNotFound: variable is not found.
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"""
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# TODO: get variable from debugtalk module and environ
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try:
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return variables_mapping[variable_name]
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except KeyError:
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raise exceptions.VariableNotFound(
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f"{variable_name} not found in {variables_mapping}"
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)
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def get_mapping_function(
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function_name: Text, functions_mapping: FunctionsMapping
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) -> Callable:
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""" get function from functions_mapping,
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if not found, then try to check if builtin function.
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Args:
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function_name (str): function name
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functions_mapping (dict): functions mapping
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Returns:
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mapping function object.
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Raises:
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exceptions.FunctionNotFound: function is neither defined in debugtalk.py nor builtin.
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"""
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if function_name in functions_mapping:
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return functions_mapping[function_name]
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elif function_name in ["parameterize", "P"]:
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return loader.load_csv_file
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elif function_name in ["environ", "ENV"]:
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return utils.get_os_environ
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elif function_name in ["multipart_encoder", "multipart_content_type"]:
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# extension for upload test
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from httprunner.ext import uploader
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return getattr(uploader, function_name)
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try:
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# check if HttpRunner builtin functions
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built_in_functions = loader.load_builtin_functions()
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return built_in_functions[function_name]
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except KeyError:
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pass
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try:
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# check if Python builtin functions
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return getattr(builtins, function_name)
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except AttributeError:
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pass
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raise exceptions.FunctionNotFound(f"{function_name} is not found.")
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def parse_string(
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raw_string: Text,
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variables_mapping: VariablesMapping,
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functions_mapping: FunctionsMapping,
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) -> Any:
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""" parse string content with variables and functions mapping.
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Args:
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raw_string: raw string content to be parsed.
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variables_mapping: variables mapping.
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functions_mapping: functions mapping.
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Returns:
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str: parsed string content.
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Examples:
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>>> raw_string = "abc${add_one($num)}def"
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>>> variables_mapping = {"num": 3}
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>>> functions_mapping = {"add_one": lambda x: x + 1}
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>>> parse_string(raw_string, variables_mapping, functions_mapping)
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"abc4def"
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"""
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try:
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match_start_position = raw_string.index("$", 0)
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parsed_string = raw_string[0:match_start_position]
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except ValueError:
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parsed_string = raw_string
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return parsed_string
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while match_start_position < len(raw_string):
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# Notice: notation priority
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# $$ > ${func($a, $b)} > $var
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# search $$
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dollar_match = dolloar_regex_compile.match(raw_string, match_start_position)
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if dollar_match:
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match_start_position = dollar_match.end()
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parsed_string += "$"
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continue
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# search function like ${func($a, $b)}
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func_match = function_regex_compile.match(raw_string, match_start_position)
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if func_match:
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func_name = func_match.group(1)
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func = get_mapping_function(func_name, functions_mapping)
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func_params_str = func_match.group(2)
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function_meta = parse_function_params(func_params_str)
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args = function_meta["args"]
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kwargs = function_meta["kwargs"]
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parsed_args = parse_data(args, variables_mapping, functions_mapping)
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parsed_kwargs = parse_data(kwargs, variables_mapping, functions_mapping)
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func_eval_value = func(*parsed_args, **parsed_kwargs)
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func_raw_str = "${" + func_name + f"({func_params_str})" + "}"
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if func_raw_str == raw_string:
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# raw_string is a function, e.g. "${add_one(3)}", return its eval value directly
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return func_eval_value
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# raw_string contains one or many functions, e.g. "abc${add_one(3)}def"
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parsed_string += str(func_eval_value)
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match_start_position = func_match.end()
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continue
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# search variable like ${var} or $var
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var_match = variable_regex_compile.match(raw_string, match_start_position)
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if var_match:
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var_name = var_match.group(1) or var_match.group(2)
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var_value = get_mapping_variable(var_name, variables_mapping)
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if f"${var_name}" == raw_string or "${" + var_name + "}" == raw_string:
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# raw_string is a variable, $var or ${var}, return its value directly
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return var_value
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# raw_string contains one or many variables, e.g. "abc${var}def"
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parsed_string += str(var_value)
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match_start_position = var_match.end()
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continue
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curr_position = match_start_position
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try:
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# find next $ location
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match_start_position = raw_string.index("$", curr_position + 1)
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remain_string = raw_string[curr_position:match_start_position]
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except ValueError:
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remain_string = raw_string[curr_position:]
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# break while loop
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match_start_position = len(raw_string)
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parsed_string += remain_string
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return parsed_string
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def parse_data(
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raw_data: Any,
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variables_mapping: VariablesMapping = None,
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functions_mapping: FunctionsMapping = None,
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) -> Any:
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""" parse raw data with evaluated variables mapping.
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Notice: variables_mapping should not contain any variable or function.
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"""
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if isinstance(raw_data, str):
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# content in string format may contains variables and functions
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variables_mapping = variables_mapping or {}
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functions_mapping = functions_mapping or {}
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raw_data = raw_data.strip()
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return parse_string(raw_data, variables_mapping, functions_mapping)
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elif isinstance(raw_data, (list, set, tuple)):
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return [
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parse_data(item, variables_mapping, functions_mapping) for item in raw_data
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]
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elif isinstance(raw_data, dict):
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parsed_data = {}
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for key, value in raw_data.items():
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parsed_key = parse_data(key, variables_mapping, functions_mapping)
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parsed_value = parse_data(value, variables_mapping, functions_mapping)
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parsed_data[parsed_key] = parsed_value
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return parsed_data
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else:
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# other types, e.g. None, int, float, bool
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return raw_data
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def parse_variables_mapping(
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variables_mapping: VariablesMapping, functions_mapping: FunctionsMapping = None
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) -> VariablesMapping:
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parsed_variables: VariablesMapping = {}
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while len(parsed_variables) != len(variables_mapping):
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for var_name in variables_mapping:
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if var_name in parsed_variables:
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continue
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var_value = variables_mapping[var_name]
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variables = extract_variables(var_value)
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# check if reference variable itself
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if var_name in variables:
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# e.g.
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# variables_mapping = {"token": "abc$token"}
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# variables_mapping = {"key": ["$key", 2]}
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raise exceptions.VariableNotFound(var_name)
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# check if reference variable not in variables_mapping
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not_defined_variables = [
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v_name for v_name in variables if v_name not in variables_mapping
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]
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if not_defined_variables:
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# e.g. {"varA": "123$varB", "varB": "456$varC"}
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# e.g. {"varC": "${sum_two($a, $b)}"}
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raise exceptions.VariableNotFound(not_defined_variables)
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try:
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parsed_value = parse_data(
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var_value, parsed_variables, functions_mapping
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)
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except exceptions.VariableNotFound:
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continue
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parsed_variables[var_name] = parsed_value
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return parsed_variables
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