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/** | ||
* Here, the student is asked to return a joke string for 2 marks | ||
* 1 mark is deducted if the student does not use make_funny | ||
*/ | ||
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import { Grader, Student } from './types' | ||
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const validStudentCorrect = | ||
`const make_joke = str => make_funny(str);` | ||
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const validStudentWrong = | ||
`const make_joke = str => str;` | ||
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const validStudentPartial = | ||
`const make_joke = str => str + ', haha!';` | ||
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export const student: Student = { | ||
invalid: { | ||
}, | ||
valid: { | ||
correct: validStudentCorrect, | ||
wrong: validStudentWrong, | ||
partial: validStudentPartial | ||
} | ||
} | ||
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const validGrader = [ | ||
`function ek0chei0y1() { | ||
const result_1 = make_joke("hello") === "hello, haha!" ? 1 : 0; | ||
__reset_function_count("make_funny"); | ||
make_joke("hello"); | ||
const result_2 = __get_function_count("make_funny") > 0 ? 2 : 1; | ||
return result_1 * result_2; | ||
} | ||
ek0chei0y1(); | ||
` | ||
] | ||
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export const grader: Grader = { | ||
invalid: {}, | ||
valid: validGrader | ||
} |
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import { grader, student } from './examples/util' | ||
import { awsEventFactory } from './helpers' | ||
import { runAll } from '../index' | ||
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const makeAwsEvent = awsEventFactory({ | ||
chapter: 1, | ||
external: { | ||
name: 'NONE', | ||
symbols: [ | ||
'__track_function', | ||
'__reset_function_count', | ||
'__get_function_count', | ||
'make_funny', | ||
] | ||
}, | ||
globals: [ | ||
['make_funny', 'str => str + ", haha!";'], | ||
['__tracking_function', 'global.__track_function("make_funny");'], | ||
] | ||
}) | ||
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test('correct wrapped function', async () => { | ||
const results = await runAll(makeAwsEvent(grader.valid, student.valid.correct)) | ||
expect(results).toEqual([ | ||
{'grade': 2, 'resultType': 'pass'}, | ||
]) | ||
}) | ||
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test('did not use function', async () => { | ||
const results = await runAll(makeAwsEvent(grader.valid, student.valid.partial)) | ||
expect(results).toEqual([ | ||
{'grade': 1, 'resultType': 'pass'}, | ||
]) | ||
}) | ||
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test('incorrect answer', async () => { | ||
const results = await runAll(makeAwsEvent(grader.valid, student.valid.wrong)) | ||
expect(results).toEqual([ | ||
{'grade': 0, 'resultType': 'pass'}, | ||
]) | ||
}) |
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var table = {}; | ||
// to stop typescript complaining | ||
const globalAny:any = global; | ||
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/** | ||
Utility function that wraps a function and provides two tracking functions | ||
to allow you to track whether a function has been called | ||
Type: (fn) -> fn | ||
To use in a grader function, remember to include this in the globals so the tracking function gets overridden before the values are bound. For instance, to track make_point, add: | ||
<EXTERNAL name="CURVES"> | ||
<SYMBOL>make_point</SYMBOL> | ||
... | ||
<SYMBOL>__reset_function_count</SYMBOL> | ||
<SYMBOL>__get_function_count</SYMBOL> | ||
</EXTERNAL> | ||
<GLOBAL> | ||
<IDENTIFIER>__tracking_function_initializer</IDENTIFIER> | ||
<VALUE>global.__track_function("make_point");</VALUE> | ||
</GLOBAL> | ||
And you will be able to use __reset_function_count and __get_function_count in your functions. | ||
**/ | ||
const track_function = (name: string) => { | ||
if (table[name] !== undefined) { | ||
reset_count(name); | ||
return; | ||
} | ||
reset_count(name); | ||
var fn = global[name]; | ||
function wrapped_function(...args: any[]): any { | ||
table[name]++; | ||
return fn(...args); | ||
} | ||
global[name] = wrapped_function; | ||
}; | ||
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const reset_count = (name: string) => { | ||
table[name] = 0; | ||
}; | ||
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const get_count = (name: string) => { | ||
return table[name]; | ||
}; | ||
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globalAny.__track_function = track_function; | ||
globalAny.__reset_function_count = reset_count; | ||
globalAny.__get_function_count = get_count; |