lightswitch: Turn vcr on and off

In vcr: Record 'HTTP' Calls to Disk

Turn vcr on and off

Description

• turn_on() and turn_off() turn on and off for the whole session.

• turned_off(code) temporarily turns off while code is running, guaranteeing that you make a real HTTP request.

• turned_on() reports on if vcr is turned on or not.

• skip_if_vcr_off() skips a test if vcr is turned off. This is occasionally useful if you're using a cassette to simulate a faked request, or if the real request would return different values (e.g. you're testing date parsing and the request returns the current date).

You can also control the default behaviour in a new session by setting the following environment variables before R starts:

• Use VCR_TURN_OFF=true to suppress all vcr usage, ignoring all cassettes. This is useful for CI/CD workflows where you want to ensure the test suite is run against the live API.

• Set VCR_TURNED_OFF=true to turn off vcr, but still use cassettes.

Usage

turn_on()

turn_off(ignore_cassettes = FALSE)

turned_off(code, ignore_cassettes = FALSE)

turned_on()

skip_if_vcr_off()

Arguments

ignore_cassettes	(logical) Controls what happens when a cassette is inserted while vcr is turned off. If TRUE is passed, the cassette insertion will be ignored; otherwise an error will be raised. Default: FALSE
code	Any block of code to run, presumably an HTTP request.

Examples

# By default, vcr is turned on
turned_on()

# you can turn off for the rest of the session
turn_off()
turned_on()
# turn on again
turn_on()

# or just turn it on turn off temporarily
turned_off({
  # some HTTP requests here
  turned_on()
})

vcr documentation built on Aug. 8, 2025, 6:45 p.m.