hierarchy-helper.js ➔ instanceDefinedOrNull - Code Metrics - Inspection of "Attempt to reduce complexity." - EgaLabs/node-ejsception - Measure and Improve Code Quality continuously with Scrutinizer

Completed

Push — master ( e70c86...318007 )

by Esaú

created 2017-06-17 10:39 UTC

hierarchy-helper.js ➔ instanceDefinedOrNull C

↳ Parent: spec/helpers/hierarchy-helper.js

Complexity

Conditions	10
Paths	4

Size

Total Lines

Duplication

Lines	0
Ratio	0 %

Importance

Changes	2
Bugs	0	Features	0

Metric	Value
cc	10
c	2
b	0
f	0
nc	4
dl	0
loc	22
rs	6.1368
nop	8

How to fix Complexity Many Parameters

// spec/helpers/hierarchy-helper.js
"use strict";

// :: DEPENDENCIES

const path = require("path");
const root = path.dirname(path.dirname(__dirname));

module.exports = (hierarchy) => {
    // check parameters
    if (!Array.isArray(hierarchy)) {
        throw new Error("hierarchy must be an array");
    }

    // load dependencies
    let deps      = hierarchy.map(value => require(path.join(root, value + ".js")));
    let klassName = hierarchy.pop();
    let Klass     = deps.pop();
    const first   = (hierarchy.length === 0);
    const third   = (hierarchy.length >= 3);

    // :: TESTING

    // test the last class in the hierarchy tree
    describe(klassName, () => {

        // :: INHERITED PROTOTYPE

        // all inherit from Object
        it("should inherit from 'Object'", () => {
            expect(new Klass()).toEqual(jasmine.any(Object));
        });

        // check the hierarchy tree
        for (let i = 0; i < hierarchy.length; i += 1) {
            it("should inherit from '" + hierarchy[i] + "'", () => {
                expect(new Klass()).toEqual(jasmine.any(deps[i]));
            });
        }

        // check inherited properties
        if (!first) {
            it("should have a prototype property named 'name'", () => {
                expect(Klass.prototype).toHaveString("name");
            });

            it("should have a prototype property named 'message'", () => {
                expect(Klass.prototype).toHaveString("message");
            });

            it("should have a prototype property named 'code'", () => {
                expect(Klass.prototype).toHaveMember("code");
            });
        }

        // check Object methods
        it("should have a prototype method named 'toString()'", () => {
            expect(Klass.prototype).toHaveMethod("toString");
        });

        // check inherited methods
        if (!first) {
            it("should have a prototype method named 'native()'", () => {
                expect(Klass.prototype).toHaveMethod("native");
            });
        }

        // :: EXTENDED PROTOTYPE

        // check extended properties
        if (first) {
            it("should have a prototype property named 'name'", () => {
                expect(Klass.prototype).toHaveString("name");
            });

            it("should have a prototype property named 'message'", () => {
                expect(Klass.prototype).toHaveString("message");
            });

            it("should have a prototype property named 'code'", () => {
                expect(Klass.prototype).toHaveMember("code");
            });

            it("should have a prototype method named 'native()'", () => {
                expect(Klass.prototype).toHaveMethod("native");
            });
        }

        // :: PROTOTYPE VALUES

        it("should have the 'class' name in the prototype property named 'name'", () => {
            expect(Klass.prototype.name).toEqual(klassName);
        });

        it("should have a dummy default value as message", () => {
            expect(Klass.prototype.message).toEqual("thrown");
        });

        it("should have a null default value as code", () => {
            expect(Klass.prototype.code).toBeNull();
        });

        // use the tests according to the hierarchy level
        if (third) {
            testThird(Klass);
        } else {
            test(Klass);
        }

    });

};

// Does a loop for each argument of the Klass constructor.
// If the iteration is even, the parameter is defined.
// If the iteration is odd, the parameter is null.
function instanceDefinedOrNull(Klass, name, message, code, fn1, fn2, fn3, third) {
    for (let i = 0; i < 2; i += 1) {
        const even1   = (i % 2 === 0);
        const arg1    = (even1 ? (third ? message : name) : null);
        const source1 = new Klass(arg1);
        fn1(source1, even1);
        for (let j = 0; j < 2; j += 1) {
            const even2   = (j % 2 === 0);
            const arg2    = (even2 ? (third ? code : message) : null);
            const source2 = new Klass(arg1, arg2);
            fn2(source2, even1, even2);
            if (!third) {
                for (let e = 0; e < 2; e += 1) {
                    const even3   = (e % 2 === 0);
                    const arg3    = (even3 ? code : null);
                    const source3 = new Klass(arg1, arg2, arg3);
                    fn3(source3, even1, even2, even3);
                }
            }
        }
    }
}

// Tests classes that are a third level subclass, meaning that they require 2 arguments (message and code).
function testThird(Klass) {

    // :: CONSTRUCTOR

    it("should instantiate without parameters", () => {
        let arg1, arg2, test;
        test = (() => new Klass(arg1, arg2));
        for (let i = 0; i < 2; i += 1) {
            arg1 = (i % 2 === 0 ? undefined : null);
            for (let j = 0; j < 2; j += 1) {
                arg2 = (j % 2 === 0 ? undefined : null);
                expect(test).not.toThrowError("parameter 'name' must be a 'string'");
                expect(test).not.toThrowError("parameter 'message' must be a 'string'");
                expect(test).not.toThrowError("parameter 'code' must be a 'number'");
            }
        }
        test = (() => new Klass());
        expect(test).not.toThrowError("parameter 'name' must be a 'string'");
        expect(test).not.toThrowError("parameter 'message' must be a 'string'");
        expect(test).not.toThrowError("parameter 'code' must be a 'number'");
    });

    it("should instantiate with parameters", () => {
        let arg1, arg2;
        const test1 = (() => new Klass(arg1));
        const test2 = (() => new Klass(arg1, arg2));
        const args1 = [undefined, null, Klass.prototype.message];
        const args2 = [undefined, null, Math.round(Math.random() * 0xFFFFFFFF)];
        for (let i = 0; i < args1.length; i += 1) {
            arg1 = args1[i];
            expect(test1).not.toThrowError("parameter 'name' must be a 'string'");
            expect(test1).not.toThrowError("parameter 'message' must be a 'string'");
            expect(test1).not.toThrowError("parameter 'code' must be a 'number'");
            for (let j = 0; j < args2.length; j += 1) {
                arg2 = args2[j];
                expect(test2).not.toThrowError("parameter 'name' must be a 'string'");
                expect(test2).not.toThrowError("parameter 'message' must be a 'string'");
                expect(test2).not.toThrowError("parameter 'code' must be a 'number'");
            }
        }
    });

    it("should throw an Error if 'message' or 'code' are invalid parameters", () => {

        let arg1, arg2, arg3, test21, test22, test11;

        const noStr   = [{}, true, false, 42, 3.1416, -42, -3.1416, () => null];
        const noNmb   = [{}, true, false, '', "qwerty", () => null];
        test22 = (() => new Klass(arg1, arg2));
        test21 = (() => new Klass(null, arg2));
        test11 = (() => new Klass(arg1));
        if (typeof Symbol === "function") {
            noStr.push(Symbol("symbol"));
            noNmb.push(Symbol("symbol"));
        }
        for (let i = 0; i < noStr.length; i += 1) {
            arg1 = noStr[i];
            expect(test11).toThrowError("parameter 'message' must be a 'string'");
            for (let j = 0; j < noNmb.length; j += 1) {
                arg2 = noNmb[j];
                expect(test22).toThrowError("parameter 'message' must be a 'string'");
                expect(test21).toThrowError("parameter 'code' must be a 'number'");
            }
        }
    });

    // :: MEMBER PROPERTIES

    const message = "asdf";
    const code    = Math.round(Math.random() * 0xFFFFFFFF);

    it("should have all correct properties once instantiated", () => {
        instanceDefinedOrNull(Klass, null, message, code, (instance, even) => {
            if (even) {
                expect(instance.name).toEqual(Klass.prototype.name);
                expect(instance.message).toEqual(message);
            } else {
                expect(instance.name).toEqual(Klass.prototype.name);
                expect(instance.message).toEqual(Klass.prototype.message);
            }
            expect(instance.code).toBeNull();
        }, (instance, even1, even2) => {
            expect(instance.name).toEqual(Klass.prototype.name);
            expect(instance.message).toEqual(even1 ? message : Klass.prototype.message);
            expect(instance.code).toEqual(even2 ? code : null);
        }, (instance, even1, even2, even3) => {
            expect(instance.name).toEqual(even1 ? name : Klass.prototype.name);

            expect(instance.message).toEqual(even2 ? message : Klass.prototype.message);
            expect(instance.code).toEqual(even3 ? code : null);
        }, true);
    });

    // :: MEMBER METHODS

    it("#toString()", () => {
        for (let i = 0; i < 2; i += 1) {

            let exp1;
            const even1   = (i % 2 === 0);
            const arg1    = (even1 ? message : null);
            const source1 = new Klass(arg1);
            if (even1) {
                exp1 = Klass.prototype.name + ": " + message + '.';
            } else {
                exp1 = Klass.prototype.name + ": " + Klass.prototype.message + '.';
            }
            expect(source1.toString()).toEqual(exp1);
            for (let j = 0; j < 2; j += 1) {
                let exp2;
                const even2   = (j % 2 === 0);
                const arg2    = (even2 ? code : null);
                const source2 = new Klass(arg1, arg2);
                exp2 = Klass.prototype.name;
                exp2 += (even2 ? " (0x" + code.toString(16) + "):" : ':' ) + ' ';
                exp2 += (even1 ? message : Klass.prototype.message) + '.';
                expect(source2.toString()).toEqual(exp2);
            }
        }
    });

    it("#native()", () => {
        instanceDefinedOrNull(Klass, null, message, code, (instance, even) => {
            const exp = (even ? message : Klass.prototype.message);
            expect(instance.native()).toEqual(new Error(exp));
        }, (instance, even1) => {
            const exp = (even1 ? message : Klass.prototype.message);
            expect(instance.native()).toEqual(new Error(exp));
        }, (instance, even1, even2) => {
            const exp = (even2 ? message : Klass.prototype.message);
            expect(instance.native()).toEqual(new Error(exp));
        }, true);
    });

}

// Tests classes that require 3 arguments (name, message and code).
function test(Klass) {

    // :: CONSTRUCTOR

    it("should instantiate without parameters", () => {
        let arg1, arg2, arg3, test;
        test = (() => new Klass(arg1, arg2, arg3));
        for (let i = 0; i < 2; i += 1) {
            arg1 = (i % 2 === 0 ? undefined : null);
            for (let j = 0; j < 2; j += 1) {
                arg2 = (j % 2 === 0 ? undefined : null);
                for (let e = 0; e < 2; e += 1) {
                    arg3 = (e % 2 === 0 ? undefined : null);
                    expect(test).not.toThrowError("parameter 'name' must be a 'string'");
                    expect(test).not.toThrowError("parameter 'message' must be a 'string'");
                    expect(test).not.toThrowError("parameter 'code' must be a 'number'");
                }
            }
        }
        test = (() => new Klass());

        expect(test).not.toThrowError("parameter 'name' must be a 'string'");
        expect(test).not.toThrowError("parameter 'message' must be a 'string'");
        expect(test).not.toThrowError("parameter 'code' must be a 'number'");
    });

    it("should instantiate with parameters", () => {
        let arg1, arg2, arg3, test1, test2, test3, args1, args2, args3;
        test1 = (() => new Klass(arg1));
        test2 = (() => new Klass(arg1, arg2));
        test3 = (() => null);

        test3 = (() => new Klass(arg1, arg2, arg3));
        args1 = [undefined, null, Klass.prototype.name];
        args2 = [undefined, null, Klass.prototype.message];
        args3 = [undefined, null, Math.round(Math.random() * 0xFFFFFFFF)];
        for (let i = 0; i < args1.length; i += 1) {
            arg1 = args1[i];
            expect(test1).not.toThrowError("parameter 'name' must be a 'string'");
            expect(test1).not.toThrowError("parameter 'message' must be a 'string'");
            expect(test1).not.toThrowError("parameter 'code' must be a 'number'");
            for (let j = 0; j < args2.length; j += 1) {
                arg2 = args2[j];
                expect(test2).not.toThrowError("parameter 'name' must be a 'string'");
                expect(test2).not.toThrowError("parameter 'message' must be a 'string'");
                expect(test2).not.toThrowError("parameter 'code' must be a 'number'");
                for (let e = 0; e < args3.length; e += 1) {
                    arg3 = args3[e];
                    expect(test3).not.toThrowError("parameter 'name' must be a 'string'");
                    expect(test3).not.toThrowError("parameter 'message' must be a 'string'");
                    expect(test3).not.toThrowError("parameter 'code' must be a 'number'");
                }
            }
        }
    });

    it("should throw an Error if 'message' or 'code' are invalid parameters", () => {

        let arg1, arg2, arg3, test31, test32, test33, test21, test22, test11;
        const noStr   = [{}, true, false, 42, 3.1416, -42, -3.1416, () => null];
        const noNmb   = [{}, true, false, '', "qwerty", () => null];
        test33 = (() => new Klass(arg1, arg2, arg3));
        test32 = (() => new Klass(null, arg2, arg3));
        test31 = (() => new Klass(null, null, arg3));
        test22 = (() => new Klass(arg1, arg2));
        test21 = (() => new Klass(null, arg2));
        test11 = (() => new Klass(arg1));
        if (typeof Symbol === "function") {
            noStr.push(Symbol("symbol"));
            noNmb.push(Symbol("symbol"));
        }
        for (let i = 0; i < noStr.length; i += 1) {
            arg1 = noStr[i];
            expect(test11).toThrowError("parameter 'name' must be a 'string'");
            for (let j = 0; j < noStr.length; j += 1) {
                arg2 = noStr[j];
                expect(test22).toThrowError("parameter 'name' must be a 'string'");
                expect(test21).toThrowError("parameter 'message' must be a 'string'");
                for (let e = 0; e < noNmb.length; e += 1) {
                    arg3 = noNmb[e];
                    expect(test33).toThrowError("parameter 'name' must be a 'string'");
                    expect(test32).toThrowError("parameter 'message' must be a 'string'");
                    expect(test31).toThrowError("parameter 'code' must be a 'number'");
                }
            }
        }
    });

    // :: MEMBER PROPERTIES

    const name    = "qwerty";
    const message = "asdf";
    const code    = Math.round(Math.random() * 0xFFFFFFFF);

    it("should have all correct properties once instantiated", () => {
        instanceDefinedOrNull(Klass, name, message, code, (instance, even) => {
            if (even) {
                expect(instance.name).toEqual(name);
                expect(instance.message).toEqual(Klass.prototype.message);
            } else {
                expect(instance.name).toEqual(Klass.prototype.name);
                expect(instance.message).toEqual(Klass.prototype.message);
            }
            expect(instance.code).toBeNull();
        }, (instance, even1, even2) => {
            expect(instance.name).toEqual(even1 ? name : Klass.prototype.name);
            expect(instance.message).toEqual(even2 ? message : Klass.prototype.message);
            expect(instance.code).toBeNull();
        }, (instance, even1, even2, even3) => {
            expect(instance.name).toEqual(even1 ? name : Klass.prototype.name);
            expect(instance.message).toEqual(even2 ? message : Klass.prototype.message);
            expect(instance.code).toEqual(even3 ? code : null);
        }, false);
    });

    // :: MEMBER METHODS

    it("#toString()", () => {
        for (let i = 0; i < 2; i += 1) {
            let exp1;
            const even1   = (i % 2 === 0);
            const arg1    = (even1 ? name : null);
            const source1 = new Klass(arg1);
            if (even1) {
                exp1 = name + ": " + Klass.prototype.message + '.';
            } else {
                exp1 = Klass.prototype.name + ": " + Klass.prototype.message + '.';
            }
            expect(source1.toString()).toEqual(exp1);
            for (let j = 0; j < 2; j += 1) {

                let exp2;
                const even2   = (j % 2 === 0);
                const arg2    = (even2 ? message : null);
                const source2 = new Klass(arg1, arg2);
                exp2 = (even1 ? name : Klass.prototype.name) + ':';
                exp2 += ' ' + (even2 ? message : Klass.prototype.message) + '.';
                expect(source2.toString()).toEqual(exp2);
                for (let e = 0; e < 2; e += 1) {
                    let exp3;
                    const even3   = (e % 2 === 0);
                    const arg3    = (even3 ? code : null);
                    const source3 = new Klass(arg1, arg2, arg3);
                    exp3  = (even1 ? name : Klass.prototype.name);
                    exp3 += (even3 ? " (0x" + code.toString(16) + "):" : ':') + ' ';
                    exp3 += (even2 ? message : Klass.prototype.message) + '.';
                    expect(source3.toString()).toEqual(exp3);
                }
            }
        }
    });

    it("#native()", () => {
        instanceDefinedOrNull(Klass, name, message, code, (instance) => {
            const exp = Klass.prototype.message;
            expect(instance.native()).toEqual(new Error(exp));
        }, (instance, even1, even2) => {
            const exp  = (even2 ? message : Klass.prototype.message);
            expect(instance.native()).toEqual(new Error(exp));
        }, (instance, even1, even2) => {
            const exp = (even2 ? message : Klass.prototype.message);
            expect(instance.native()).toEqual(new Error(exp));
        }, false);
    });

}

1		// spec/helpers/hierarchy-helper.js
2		"use strict";
3
4		// :: DEPENDENCIES
5
6		const path = require("path");
7		const root = path.dirname(path.dirname(__dirname));
8
9		module.exports = (hierarchy) => {
10		// check parameters
11		if (!Array.isArray(hierarchy)) {
12		throw new Error("hierarchy must be an array");
13		}
14
15		// load dependencies
16		let deps = hierarchy.map(value => require(path.join(root, value + ".js")));
17		let klassName = hierarchy.pop();
18		let Klass = deps.pop();
19		const first = (hierarchy.length === 0);
20		const third = (hierarchy.length >= 3);
21
22		// :: TESTING
23
24		// test the last class in the hierarchy tree
25		describe(klassName, () => {
26
27		// :: INHERITED PROTOTYPE
28
29		// all inherit from Object
30		it("should inherit from 'Object'", () => {
31		expect(new Klass()).toEqual(jasmine.any(Object));
32		});
33
34		// check the hierarchy tree
35		for (let i = 0; i < hierarchy.length; i += 1) {
36		it("should inherit from '" + hierarchy[i] + "'", () => {
37		expect(new Klass()).toEqual(jasmine.any(deps[i]));
38		});
39		}
40
41		// check inherited properties
42		if (!first) {
43		it("should have a prototype property named 'name'", () => {
44		expect(Klass.prototype).toHaveString("name");
45		});
46
47		it("should have a prototype property named 'message'", () => {
48		expect(Klass.prototype).toHaveString("message");
49		});
50
51		it("should have a prototype property named 'code'", () => {
52		expect(Klass.prototype).toHaveMember("code");
53		});
54		}
55
56		// check Object methods
57		it("should have a prototype method named 'toString()'", () => {
58		expect(Klass.prototype).toHaveMethod("toString");
59		});
60
61		// check inherited methods
62		if (!first) {
63		it("should have a prototype method named 'native()'", () => {
64		expect(Klass.prototype).toHaveMethod("native");
65		});
66		}
67
68		// :: EXTENDED PROTOTYPE
69
70		// check extended properties
71		if (first) {
72		it("should have a prototype property named 'name'", () => {
73		expect(Klass.prototype).toHaveString("name");
74		});
75
76		it("should have a prototype property named 'message'", () => {
77		expect(Klass.prototype).toHaveString("message");
78		});
79
80		it("should have a prototype property named 'code'", () => {
81		expect(Klass.prototype).toHaveMember("code");
82		});
83
84		it("should have a prototype method named 'native()'", () => {
85		expect(Klass.prototype).toHaveMethod("native");
86		});
87		}
88
89		// :: PROTOTYPE VALUES
90
91		it("should have the 'class' name in the prototype property named 'name'", () => {
92		expect(Klass.prototype.name).toEqual(klassName);
93		});
94
95		it("should have a dummy default value as message", () => {
96		expect(Klass.prototype.message).toEqual("thrown");
97		});
98
99		it("should have a null default value as code", () => {
100		expect(Klass.prototype.code).toBeNull();
101		});
102
103		// use the tests according to the hierarchy level
104		if (third) {
105		testThird(Klass);
106		} else {
107		test(Klass);
108		}
109
110		});
111
112		};
113
114		// Does a loop for each argument of the Klass constructor.
115		// If the iteration is even, the parameter is defined.
116		// If the iteration is odd, the parameter is null.
117		function instanceDefinedOrNull(Klass, name, message, code, fn1, fn2, fn3, third) {
118		for (let i = 0; i < 2; i += 1) {
119		const even1 = (i % 2 === 0);
120		const arg1 = (even1 ? (third ? message : name) : null);
121		const source1 = new Klass(arg1);
122		fn1(source1, even1);
123		for (let j = 0; j < 2; j += 1) {
124		const even2 = (j % 2 === 0);
125		const arg2 = (even2 ? (third ? code : message) : null);
126		const source2 = new Klass(arg1, arg2);
127		fn2(source2, even1, even2);
128		if (!third) {
129		for (let e = 0; e < 2; e += 1) {
130		const even3 = (e % 2 === 0);
131		const arg3 = (even3 ? code : null);
132		const source3 = new Klass(arg1, arg2, arg3);
133		fn3(source3, even1, even2, even3);
134		}
135		}
136		}
137		}
138		}
139
140		// Tests classes that are a third level subclass, meaning that they require 2 arguments (message and code).
141		function testThird(Klass) {
142
143		// :: CONSTRUCTOR
144
145		it("should instantiate without parameters", () => {
146		let arg1, arg2, test;
147		test = (() => new Klass(arg1, arg2));
148		for (let i = 0; i < 2; i += 1) {
149		arg1 = (i % 2 === 0 ? undefined : null);
150		for (let j = 0; j < 2; j += 1) {
151		arg2 = (j % 2 === 0 ? undefined : null);
152		expect(test).not.toThrowError("parameter 'name' must be a 'string'");
153		expect(test).not.toThrowError("parameter 'message' must be a 'string'");
154		expect(test).not.toThrowError("parameter 'code' must be a 'number'");
155		}
156		}
157		test = (() => new Klass());
158		expect(test).not.toThrowError("parameter 'name' must be a 'string'");
159		expect(test).not.toThrowError("parameter 'message' must be a 'string'");
160		expect(test).not.toThrowError("parameter 'code' must be a 'number'");
161		});
162
163		it("should instantiate with parameters", () => {
164		let arg1, arg2;
165		const test1 = (() => new Klass(arg1));
166		const test2 = (() => new Klass(arg1, arg2));
167		const args1 = [undefined, null, Klass.prototype.message];
168		const args2 = [undefined, null, Math.round(Math.random() * 0xFFFFFFFF)];
169		for (let i = 0; i < args1.length; i += 1) {
170		arg1 = args1[i];
171		expect(test1).not.toThrowError("parameter 'name' must be a 'string'");
172		expect(test1).not.toThrowError("parameter 'message' must be a 'string'");
173		expect(test1).not.toThrowError("parameter 'code' must be a 'number'");
174		for (let j = 0; j < args2.length; j += 1) {
175		arg2 = args2[j];
176		expect(test2).not.toThrowError("parameter 'name' must be a 'string'");
177		expect(test2).not.toThrowError("parameter 'message' must be a 'string'");
178		expect(test2).not.toThrowError("parameter 'code' must be a 'number'");
179		}
180		}
181		});
182
183	View Code Duplication	it("should throw an Error if 'message' or 'code' are invalid parameters", () => {
		0 ignored issues – show Duplication introduced 2017-06-17 10:41 UTC by Report Bug Copy Issue Report This code seems to be duplicated in your project. Loading history...
184		let arg1, arg2, arg3, test21, test22, test11;
		0 ignored issues – show Unused Code introduced 2017-06-17 10:41 UTC by Report Bug Copy Issue Report The variable `arg3` seems to be never used. Consider removing it. Loading history...
185		const noStr = [{}, true, false, 42, 3.1416, -42, -3.1416, () => null];
186		const noNmb = [{}, true, false, '', "qwerty", () => null];
187		test22 = (() => new Klass(arg1, arg2));
188		test21 = (() => new Klass(null, arg2));
189		test11 = (() => new Klass(arg1));
190		if (typeof Symbol === "function") {
191		noStr.push(Symbol("symbol"));
192		noNmb.push(Symbol("symbol"));
193		}
194		for (let i = 0; i < noStr.length; i += 1) {
195		arg1 = noStr[i];
196		expect(test11).toThrowError("parameter 'message' must be a 'string'");
197		for (let j = 0; j < noNmb.length; j += 1) {
198		arg2 = noNmb[j];
199		expect(test22).toThrowError("parameter 'message' must be a 'string'");
200		expect(test21).toThrowError("parameter 'code' must be a 'number'");
201		}
202		}
203		});
204
205		// :: MEMBER PROPERTIES
206
207		const message = "asdf";
208		const code = Math.round(Math.random() * 0xFFFFFFFF);
209
210		it("should have all correct properties once instantiated", () => {
211		instanceDefinedOrNull(Klass, null, message, code, (instance, even) => {
212		if (even) {
213		expect(instance.name).toEqual(Klass.prototype.name);
214		expect(instance.message).toEqual(message);
215		} else {
216		expect(instance.name).toEqual(Klass.prototype.name);
217		expect(instance.message).toEqual(Klass.prototype.message);
218		}
219		expect(instance.code).toBeNull();
220		}, (instance, even1, even2) => {
221		expect(instance.name).toEqual(Klass.prototype.name);
222		expect(instance.message).toEqual(even1 ? message : Klass.prototype.message);
223		expect(instance.code).toEqual(even2 ? code : null);
224		}, (instance, even1, even2, even3) => {
225		expect(instance.name).toEqual(even1 ? name : Klass.prototype.name);
		0 ignored issues – show Bug introduced 2017-06-17 10:41 UTC by Report Bug Copy Issue Report The variable `name` seems to be never declared. If this is a global, consider adding a `/** global: name */` comment. This checks looks for references to variables that have not been declared. This is most likey a typographical error or a variable has been renamed. To learn more about declaring variables in Javascript, see the MDN. Loading history...
226		expect(instance.message).toEqual(even2 ? message : Klass.prototype.message);
227		expect(instance.code).toEqual(even3 ? code : null);
228		}, true);
229		});
230
231		// :: MEMBER METHODS
232
233		it("#toString()", () => {
234	View Code Duplication	for (let i = 0; i < 2; i += 1) {
		0 ignored issues – show Duplication introduced 2017-06-17 10:41 UTC by Report Bug Copy Issue Report This code seems to be duplicated in your project. Loading history...
235		let exp1;
236		const even1 = (i % 2 === 0);
237		const arg1 = (even1 ? message : null);
238		const source1 = new Klass(arg1);
239		if (even1) {
240		exp1 = Klass.prototype.name + ": " + message + '.';
241		} else {
242		exp1 = Klass.prototype.name + ": " + Klass.prototype.message + '.';
243		}
244		expect(source1.toString()).toEqual(exp1);
245		for (let j = 0; j < 2; j += 1) {
246		let exp2;
247		const even2 = (j % 2 === 0);
248		const arg2 = (even2 ? code : null);
249		const source2 = new Klass(arg1, arg2);
250		exp2 = Klass.prototype.name;
251		exp2 += (even2 ? " (0x" + code.toString(16) + "):" : ':' ) + ' ';
252		exp2 += (even1 ? message : Klass.prototype.message) + '.';
253		expect(source2.toString()).toEqual(exp2);
254		}
255		}
256		});
257
258		it("#native()", () => {
259		instanceDefinedOrNull(Klass, null, message, code, (instance, even) => {
260		const exp = (even ? message : Klass.prototype.message);
261		expect(instance.native()).toEqual(new Error(exp));
262		}, (instance, even1) => {
263		const exp = (even1 ? message : Klass.prototype.message);
264		expect(instance.native()).toEqual(new Error(exp));
265		}, (instance, even1, even2) => {
266		const exp = (even2 ? message : Klass.prototype.message);
267		expect(instance.native()).toEqual(new Error(exp));
268		}, true);
269		});
270
271		}
272
273		// Tests classes that require 3 arguments (name, message and code).
274		function test(Klass) {
275
276		// :: CONSTRUCTOR
277
278		it("should instantiate without parameters", () => {
279		let arg1, arg2, arg3, test;
280		test = (() => new Klass(arg1, arg2, arg3));
281		for (let i = 0; i < 2; i += 1) {
282		arg1 = (i % 2 === 0 ? undefined : null);
283		for (let j = 0; j < 2; j += 1) {
284		arg2 = (j % 2 === 0 ? undefined : null);
285		for (let e = 0; e < 2; e += 1) {
286		arg3 = (e % 2 === 0 ? undefined : null);
287		expect(test).not.toThrowError("parameter 'name' must be a 'string'");
288		expect(test).not.toThrowError("parameter 'message' must be a 'string'");
289		expect(test).not.toThrowError("parameter 'code' must be a 'number'");
290		}
291		}
292		}
293		test = (() => new Klass());
		0 ignored issues – show Comprehensibility introduced 2017-06-17 10:41 UTC by Report Bug Copy Issue Report It seems like you are trying to overwrite a function name here. `test` is already defined in line 274 as a function. While this will work, it can be very confusing. Loading history...
294		expect(test).not.toThrowError("parameter 'name' must be a 'string'");
295		expect(test).not.toThrowError("parameter 'message' must be a 'string'");
296		expect(test).not.toThrowError("parameter 'code' must be a 'number'");
297		});
298
299		it("should instantiate with parameters", () => {
300		let arg1, arg2, arg3, test1, test2, test3, args1, args2, args3;
301		test1 = (() => new Klass(arg1));
302		test2 = (() => new Klass(arg1, arg2));
303		test3 = (() => null);
		0 ignored issues – show Unused Code introduced 2017-06-17 10:41 UTC by Report Bug Copy Issue Report The assignment to variable `test3` seems to be never used. Consider removing it. Loading history...
304		test3 = (() => new Klass(arg1, arg2, arg3));
305		args1 = [undefined, null, Klass.prototype.name];
306		args2 = [undefined, null, Klass.prototype.message];
307		args3 = [undefined, null, Math.round(Math.random() * 0xFFFFFFFF)];
308		for (let i = 0; i < args1.length; i += 1) {
309		arg1 = args1[i];
310		expect(test1).not.toThrowError("parameter 'name' must be a 'string'");
311		expect(test1).not.toThrowError("parameter 'message' must be a 'string'");
312		expect(test1).not.toThrowError("parameter 'code' must be a 'number'");
313		for (let j = 0; j < args2.length; j += 1) {
314		arg2 = args2[j];
315		expect(test2).not.toThrowError("parameter 'name' must be a 'string'");
316		expect(test2).not.toThrowError("parameter 'message' must be a 'string'");
317		expect(test2).not.toThrowError("parameter 'code' must be a 'number'");
318		for (let e = 0; e < args3.length; e += 1) {
319		arg3 = args3[e];
320		expect(test3).not.toThrowError("parameter 'name' must be a 'string'");
321		expect(test3).not.toThrowError("parameter 'message' must be a 'string'");
322		expect(test3).not.toThrowError("parameter 'code' must be a 'number'");
323		}
324		}
325		}
326		});
327
328	View Code Duplication	it("should throw an Error if 'message' or 'code' are invalid parameters", () => {
		0 ignored issues – show Duplication introduced 2017-06-17 10:41 UTC by Report Bug Copy Issue Report This code seems to be duplicated in your project. Loading history...
329		let arg1, arg2, arg3, test31, test32, test33, test21, test22, test11;
330		const noStr = [{}, true, false, 42, 3.1416, -42, -3.1416, () => null];
331		const noNmb = [{}, true, false, '', "qwerty", () => null];
332		test33 = (() => new Klass(arg1, arg2, arg3));
333		test32 = (() => new Klass(null, arg2, arg3));
334		test31 = (() => new Klass(null, null, arg3));
335		test22 = (() => new Klass(arg1, arg2));
336		test21 = (() => new Klass(null, arg2));
337		test11 = (() => new Klass(arg1));
338		if (typeof Symbol === "function") {
339		noStr.push(Symbol("symbol"));
340		noNmb.push(Symbol("symbol"));
341		}
342		for (let i = 0; i < noStr.length; i += 1) {
343		arg1 = noStr[i];
344		expect(test11).toThrowError("parameter 'name' must be a 'string'");
345		for (let j = 0; j < noStr.length; j += 1) {
346		arg2 = noStr[j];
347		expect(test22).toThrowError("parameter 'name' must be a 'string'");
348		expect(test21).toThrowError("parameter 'message' must be a 'string'");
349		for (let e = 0; e < noNmb.length; e += 1) {
350		arg3 = noNmb[e];
351		expect(test33).toThrowError("parameter 'name' must be a 'string'");
352		expect(test32).toThrowError("parameter 'message' must be a 'string'");
353		expect(test31).toThrowError("parameter 'code' must be a 'number'");
354		}
355		}
356		}
357		});
358
359		// :: MEMBER PROPERTIES
360
361		const name = "qwerty";
362		const message = "asdf";
363		const code = Math.round(Math.random() * 0xFFFFFFFF);
364
365		it("should have all correct properties once instantiated", () => {
366		instanceDefinedOrNull(Klass, name, message, code, (instance, even) => {
367		if (even) {
368		expect(instance.name).toEqual(name);
369		expect(instance.message).toEqual(Klass.prototype.message);
370		} else {
371		expect(instance.name).toEqual(Klass.prototype.name);
372		expect(instance.message).toEqual(Klass.prototype.message);
373		}
374		expect(instance.code).toBeNull();
375		}, (instance, even1, even2) => {
376		expect(instance.name).toEqual(even1 ? name : Klass.prototype.name);
377		expect(instance.message).toEqual(even2 ? message : Klass.prototype.message);
378		expect(instance.code).toBeNull();
379		}, (instance, even1, even2, even3) => {
380		expect(instance.name).toEqual(even1 ? name : Klass.prototype.name);
381		expect(instance.message).toEqual(even2 ? message : Klass.prototype.message);
382		expect(instance.code).toEqual(even3 ? code : null);
383		}, false);
384		});
385
386		// :: MEMBER METHODS
387
388		it("#toString()", () => {
389		for (let i = 0; i < 2; i += 1) {
390		let exp1;
391		const even1 = (i % 2 === 0);
392		const arg1 = (even1 ? name : null);
393		const source1 = new Klass(arg1);
394		if (even1) {
395		exp1 = name + ": " + Klass.prototype.message + '.';
396		} else {
397		exp1 = Klass.prototype.name + ": " + Klass.prototype.message + '.';
398		}
399		expect(source1.toString()).toEqual(exp1);
400	View Code Duplication	for (let j = 0; j < 2; j += 1) {
		0 ignored issues – show Duplication introduced 2017-06-17 10:41 UTC by Report Bug Copy Issue Report This code seems to be duplicated in your project. Loading history...
401		let exp2;
402		const even2 = (j % 2 === 0);
403		const arg2 = (even2 ? message : null);
404		const source2 = new Klass(arg1, arg2);
405		exp2 = (even1 ? name : Klass.prototype.name) + ':';
406		exp2 += ' ' + (even2 ? message : Klass.prototype.message) + '.';
407		expect(source2.toString()).toEqual(exp2);
408		for (let e = 0; e < 2; e += 1) {
409		let exp3;
410		const even3 = (e % 2 === 0);
411		const arg3 = (even3 ? code : null);
412		const source3 = new Klass(arg1, arg2, arg3);
413		exp3 = (even1 ? name : Klass.prototype.name);
414		exp3 += (even3 ? " (0x" + code.toString(16) + "):" : ':') + ' ';
415		exp3 += (even2 ? message : Klass.prototype.message) + '.';
416		expect(source3.toString()).toEqual(exp3);
417		}
418		}
419		}
420		});
421
422		it("#native()", () => {
423		instanceDefinedOrNull(Klass, name, message, code, (instance) => {
424		const exp = Klass.prototype.message;
425		expect(instance.native()).toEqual(new Error(exp));
426		}, (instance, even1, even2) => {
427		const exp = (even2 ? message : Klass.prototype.message);
428		expect(instance.native()).toEqual(new Error(exp));
429		}, (instance, even1, even2) => {
430		const exp = (even2 ? message : Klass.prototype.message);
431		expect(instance.native()).toEqual(new Error(exp));
432		}, false);
433		});
434
435		}

EgaLabs / node-ejsception

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hierarchy-helper.js ➔ instanceDefinedOrNull C

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