Generating test input values for functional components based on test coverage analysis

1. A method, comprising:

performing, by a processor device of a computing device, a test coverage analysis of a plurality of programming instructions of a functional component, the functional component comprising a plurality of input parameters;

identifying, based on the test coverage analysis, a subset of the plurality of programming instructions for which testing has not been performed;

identifying a data type of each input parameter of the plurality of input parameters;

generating a plurality of test input values based on the data type of each input parameter of the plurality of input parameters and the test coverage analysis, wherein a test input value among the plurality of test input values causes executable instructions corresponding to the subset of the plurality of programming instructions to be executed during subsequent testing;

executing the functional component using the plurality of test input values;

comparing an output of the functional component with an expected output of the functional component; and

generating a test result indication based on the comparing.

2. The method of claim 1 , wherein the functional component comprises a Javascript function.

3. The method of claim 1 , further comprising determining that the functional component comprises a pure function;

wherein performing the test coverage analysis is responsive to determining that the functional component comprises the pure function.

4. The method of claim 3 , wherein determining that the functional component comprises a pure function is based on one of source code notation, a comparison of the functional component to a database of known pure functions, and a machine learning (ML) algorithm.

5. The method of claim 1 , wherein:

performing the test coverage analysis comprises building an Abstract Syntax Tree (AST) representation of the functional component;

identifying the subset of the plurality of programming instructions to be tested is based on the AST representation; and

generating the plurality of test input values is further based on the AST representation.

6. The method of claim 1 , wherein:

identifying the data type of each input parameter of the plurality of input parameters comprises:

building a tree data structure comprising a plurality of nodes corresponding to the plurality of input parameters, wherein:

each inner node among the plurality of nodes corresponds to a composite data type; and

each leaf node corresponds to a primitive data type; and

generating the plurality of test input values comprises generating a test input value for each leaf node among the plurality of nodes of the tree data structure.

7. The method of claim 1 , wherein the plurality of test input values comprises one or more of a boundary case for each input parameter of the plurality of input parameters and a user-supplied test input value.

8. A computing device, comprising:

a system memory; and

a processor device coupled to the system memory to:

perform a test coverage analysis of a plurality of programming instructions of a functional component, the functional component comprising a plurality of input parameters;

identify, based on the test coverage analysis, a subset of the plurality of programming instructions for which testing has not been performed;

identify a data type of each input parameter of the plurality of input parameters;

generate a plurality of test input values based on the data type of each input parameter of the plurality of input parameters and the test coverage analysis, wherein a test input value among the plurality of test input values causes executable instructions corresponding to the subset of the plurality of programming instructions to be executed during subsequent testing;

execute the functional component using the plurality of test input values;

compare an output of the functional component with an expected output of the functional component; and

generate a test result indication based on the comparing.

9. The computing device of claim 8 , wherein the functional component comprises a Javascript function.

10. The computing device of claim 8 , wherein:

the processor device is further to determine that the functional component comprises a pure function; and

the processor device is to perform the test coverage analysis responsive to determining that the functional component comprises the pure function.

11. The computing device of claim 10 , wherein the processor device is to determine that the functional component comprises a pure function based on one of source code notation, a comparison of the functional component to a database of known pure functions, and a machine learning (ML) algorithm.

12. The computing device of claim 8 , wherein:

to perform the test coverage analysis is to build an Abstract Syntax Tree (AST) representation of the functional component;

the processor device is to identify the subset of the plurality of programming instructions to be tested based on the AST representation; and

the processor device is to generate the plurality of test input values further based on the AST representation.

13. The computing device of claim 8 , wherein:

to identify the data type of each input parameter of the plurality of input parameters is to build a tree data structure comprising a plurality of nodes corresponding to the plurality of input parameters, wherein:

each inner node among the plurality of nodes corresponds to a composite data type; and

each leaf node corresponds to a primitive data type; and

to generate the plurality of test input values is to generate a test input value for each leaf node among the plurality of nodes of the tree data structure.

14. The computing device of claim 8 , wherein the plurality of test input values comprises one or more of a boundary case for each input parameter of the plurality of input parameters and a user-supplied test input value.

15. A method, comprising:

performing, by a processor device of a computing device, a test coverage analysis of a plurality of programming instructions of a functional component, the functional component comprising a plurality of input parameters, wherein performing the test coverage analysis comprises building an Abstract Syntax Tree (AST) representation of the functional component;

identifying, based on the AST representation, a subset of the plurality of programming instructions for which testing has not been performed;

identifying a data type of each input parameter of the plurality of input parameters; and

generating a plurality of test input values based on the data type of each input parameter of the plurality of input parameters and the AST representation, wherein a test input value among the plurality of test input values causes executable instructions corresponding to the subset of the plurality of programming instructions to be executed during subsequent testing.

16. A computing device, comprising:

a system memory; and

a processor device coupled to the system memory to:

perform a test coverage analysis of a plurality of programming instructions of a functional component, the functional component comprising a plurality of input parameters, wherein performing the test coverage analysis comprises building an Abstract Syntax Tree (AST) representation of the functional component;

identify, based on the AST representation, a subset of the plurality of programming instructions for which testing has not been performed;

identify a data type of each input parameter of the plurality of input parameters; and

generate a plurality of test input values based on the data type of each input parameter of the plurality of input parameters and the AST representation, wherein a test input value among the plurality of test input values causes executable instructions corresponding to the subset of the plurality of programming instructions to be executed during subsequent testing.