75 lines
2.5 KiB
Python
75 lines
2.5 KiB
Python
# Copyright 2015-2017 Espressif Systems (Shanghai) PTE LTD
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http:#www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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"""
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The test env could change when we running test from different computers.
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Test env config provide ``get_variable`` method to allow user get test environment related variables.
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It will first try to get variable from config file.
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If failed, then it will try to auto detect (Not supported yet).
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Config file format is yaml. it's a set of key-value pair. The following is an example of config file::
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Example_WIFI:
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ap_ssid: "myssid"
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ap_password: "mypassword"
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Example_ShieldBox:
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attenuator_port: "/dev/ttyUSB2"
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ap_ssid: "myssid"
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ap_password: "mypassword"
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It will first define the env tag for each environment, then add its key-value pairs.
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This will prevent test cases from getting configs from other env when there're configs for multiple env in one file.
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"""
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import yaml
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class Config(object):
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""" Test Env Config """
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def __init__(self, config_file, env_tag):
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self.configs = self.load_config_file(config_file, env_tag)
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@staticmethod
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def load_config_file(config_file, env_name):
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"""
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load configs from config file.
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:param config_file: config file path
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:param env_name: env tag name
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:return: configs for the test env
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"""
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try:
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with open(config_file) as f:
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configs = yaml.load(f)[env_name]
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except (OSError, TypeError, IOError):
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configs = dict()
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return configs
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def get_variable(self, variable_name):
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"""
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first try to get from config file. if not found, try to auto detect the variable.
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:param variable_name: name of variable
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:return: value or None
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"""
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try:
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value = self.configs[variable_name]
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except KeyError:
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# TODO: to support auto get variable here
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value = None
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if value is None:
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raise ValueError("Failed to get variable")
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return value
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