name = "env_config"
category = "environment"
mode = "solve"
description = """
Read a config format from stdin where each line is "KEY=VALUE".
For each line, set an environment variable with that key and value.
After processing all lines, run the command `env` and print only the variables
that were set from the input, sorted alphabetically by key, in "KEY=VALUE" format.

You must actually set these as environment variables and retrieve them back
(not just echo the input).
"""

[[test_cases]]
stdin = """APP_NAME=myapp
APP_PORT=8080
APP_DEBUG=true"""
expected_stdout = """APP_DEBUG=true
APP_NAME=myapp
APP_PORT=8080"""
env = {}

[[test_cases]]
stdin = """DB_HOST=localhost
DB_PORT=5432"""
expected_stdout = """DB_HOST=localhost
DB_PORT=5432"""
env = {}

[[test_cases]]
stdin = "SINGLE_VAR=hello"
expected_stdout = "SINGLE_VAR=hello"
env = {}