Grader: file-contains

Taxonomy

Property	Value
Determinism	static
Cost	low
Reference	reference-free
Temporal scope	trajectory-level
Score kind	code

Config

graders:
  - type: file-contains
    config:
      path: "add.test.js"
      value: "expect"

Field	Type	Required	Description
path	string	Yes	File path (or glob) to check
value	string	Yes	Text that must appear in the file
negate	boolean	No	When true, passes when the value is NOT found

Negated variant

Use file-not-contains as a shorthand for negate: true:

graders:
  - type: file-not-contains
    config:
      path: "*.csproj"
      value: "packages.config"

This is equivalent to type: file-contains with negate: true.

Behavior

1. Finds files matching path in the workspace using glob
2. Reads file contents
3. Checks if the file contains value (case-sensitive)

Passes when the value is found in at least one matching file (or NOT found if negated). Fails otherwise.

Evidence examples

✔ 'expect' found in add.test.js
✘ 'expect' NOT found in add.test.js
✘ No files matching 'add.test.js' found