Build TEST edges from test files to user-defined functions

Parses each test file for references to user-defined function names, using the same AST-walking approach used in find_calls_in_body(). A TEST edge (test_file_stem -> function_node_id) is emitted when a test file calls a function that exists as a node in func_nodes.

Usage

build_test_edges(func_nodes, test_files)

Arguments

func_nodes

A list of function node records from extract_function_nodes().

test_files

Character vector of absolute paths to test .R files.

Value

A data.frame with columns:

from

Test file stem, character.

to

node_id of the tested function, character.

weight

Numeric: edge weight (default 1).

Details

Test-helper symbols (expect_*, test_that, describe, it, setup, teardown, skip*, withr::*) are excluded from matching to avoid false edges to non-existent nodes.

See also

build_call_edges(), build_import_edges()

Examples

if (FALSE) { # \dontrun{
proj  <- detect_rproject("/path/to/mypkg")
nodes <- extract_function_nodes(proj$r_files)
edges <- build_test_edges(nodes, proj$test_files)
} # }