An R Autograding Extension for Otter-Grader

Documentation for package ‘ottr’ version 1.3.1

check	Run the test cases in a test file
CheckCollector	An R6 class for collecting TestFileResult objects during grading.
collector_env	An environment into which a collector will be initialized (so we don't need to update global variables).
collector_varname	The name of the active collector variable in collector_env
execute_script	Generate an environment from an R script
export	Export a submission to a zip file
get_collector	Retrieve the global CheckCollector
grade_script	Grade an R script against a series of test files
GradingResults	An R6 class representing a collection of test case results
initialize_collector	Create a new global CheckCollector
load_test_cases	Load test cases from a test file
make_secret	Generate a random string of characters
run_autograder	Grade an R script against test files in a directory
TestCase	An R6 class representing a test case
TestCaseResult	An R6 representing the results of running a test case
TestFileResult	An R6 class representing a collection of test case results
update_ast_check_calls	Collect results of calls to 'ottr::check' in an AST
valid_expr_chars	A string containing characters that can be made into a valid variable name. Does not include any digits because randomly sampling with them included could result in an invalid variable name.
valid_syntax	Check whether a string is valid R code