usa-state-legislatures/src/stateLegislatures.spec.js

This package will return various information about a given state legislature- including number of members, term length, and party division.

const {
    stateLegislatureName,
    stateLegislatureMembers,
    stateLegislatureTermLength,
    stateLegislatureTermLengthByChamber,
    totalStateLegislativeMembers,
    stateLegislatureMembersByChamber
} = require('./stateLegislatures');

describe('State Legislature Info', () => {

    const stateLegislatureData = [
        {
            input: {name: 'ohio', abbr: 'oh'},
            expectedResult: {
                legislatureName:{
                    "legislatureName": "General Assembly", 
                    "lowerHouse": "House of Representatives", 
                    "upperHouse": "Senate"
                },
                legislatureMembers: {
                    "House of Representatives": 99,
                    "Senate": 33
                },
                totalMembers: {
                    "House of Representatives": 99,
                    "Senate": 33,
                    "totalStateLegislativeMembers": 132
                },
                legislatureTermLength: {
                    "House of Representatives": "2",
                    "Senate": "4"
                }
            }
        }
    ];
    
    const errorStateLegislatureData = [
        stateLegislatureName, stateLegislatureMembers, stateLegislatureTermLength
    ];

    test.each(stateLegislatureData)('state legislature information is returned successfully - name, member count, and term length',(data) =>{
        expect(stateLegislatureName(data.input.abbr)).toEqual(data.expectedResult.legislatureName);
        expect(stateLegislatureName(data.input.name)).toEqual(data.expectedResult.legislatureName);

        expect(stateLegislatureMembers(data.input.abbr)).toEqual(data.expectedResult.legislatureMembers);
        expect(stateLegislatureMembers(data.input.name)).toEqual(data.expectedResult.legislatureMembers);

        expect(stateLegislatureTermLength(data.input.abbr)).toEqual(data.expectedResult.legislatureTermLength);
        expect(stateLegislatureTermLength(data.input.name)).toEqual(data.expectedResult.legislatureTermLength);      
           
        expect(totalStateLegislativeMembers(data.input.abbr)).toEqual(data.expectedResult.totalMembers);
        expect(totalStateLegislativeMembers(data.input.name)).toEqual(data.expectedResult.totalMembers);      
    });

    test.each(errorStateLegislatureData)('when an invalid state is passed, the correct error is thrown',(functionName) =>{
        expect(() => {functionName("NotAState")}).toThrow(Error("NotAState is not a valid USA state or USA state abbreviation."));   
    });
});

describe('stateLegislatureTermLengthByChamber', () => {
    const termLengthData = [
        {
            input: {
                state: 'ohio',
                chamber: 'senate'
            },
            expectedResult: {
                term: "4",
                memberCount: 33
            }
        },
        {
            input: {
                state: 'ohio',
                chamber: 'house'
            },
            expectedResult:  {
                term: "2",
                memberCount: 99
            }
        },
        {
            input: {
                state: 'ohio',
                chamber: 'upper'
            },
            expectedResult:  {
                term: "4",
                memberCount: 33
            }
        },
        {
            input: {
                state: 'ohio',
                chamber: 'lower'
            },
            expectedResult:  {
                term: "2",
                memberCount: 99
            }
        },
        {
            input: {
                state: 'WI',
                chamber: 'state senate'
            },
            expectedResult:  {
                term: "4",
                memberCount: 33
            }
        },
        {
            input: {
                state: 'VA',
                chamber: 'House of Delegates '
            },
            expectedResult: {
                term: "2",
                memberCount: 100
            }
        },
        {
            input: {
                state: 'NE',
                chamber: 'Legislature'
            },
            expectedResult:  {
                term: "4",
                memberCount: 49
            }
        }
    ];
    
    const errorTermLengthData = [
        {
            input: {
                state: 'ohio',
                chamber: 123
            },
            expectedResult: Error("number is not a valid type for chamber. Input must be a string.")
        },
        {
            input: {
                state: 'ohio',
                chamber: 'typo'
            },
            expectedResult:Error("typo is not a valid state legislative chamber for Ohio. Please enter either 'House of Representatives' (can also use 'House') or 'Senate' (can also use 'Senate').")
        },
        {
            input: {
                state: 'NotAState',
                chamber: 'upper'
            },
            expectedResult: Error("NotAState is not a valid USA state or USA state abbreviation.")
        }
    ];
    

    test.each(termLengthData)('term limit information by chamber is returned successfully',(data) =>{
        expect(stateLegislatureTermLengthByChamber(data.input.state, data.input.chamber)).toEqual(data.expectedResult.term);  
        expect(stateLegislatureMembersByChamber(data.input.state, data.input.chamber)).toEqual(data.expectedResult.memberCount);    
    }); 

    test.each(errorTermLengthData)('when an invalid state or chamber is passed, the correct error is thrown',(data) =>{
        expect(() => {stateLegislatureTermLengthByChamber(data.input.state, data.input.chamber);}).toThrow(data.expectedResult);
        expect(() => { stateLegislatureMembersByChamber(data.input.state, data.input.chamber);}).toThrow(data.expectedResult);
    });
});