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LibJS: Add test-common.js tests, remove unused matchers

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Now that test-common.js is quite a bit more complicated, we need tests
for test-common to make sure all of the matchers behave correctly
This commit is contained in:
Matthew Olsson 2020-07-03 18:09:35 -07:00 • committed by Andreas Kling
parent eea6041302
commit b86faeaeef
3 changed files with 261 additions and 76 deletions
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110
Libraries/LibJS/Tests/test-common.js
View file

@ -16,6 +16,13 @@ console.log = (...args) => {
__UserOutput__.push(args.join(" "));
};
class ExpectationError extends Error {
constructor(message, fileName, lineNumber) {
super(message, fileName, lineNumber);
this.name = "ExpectationError";
}
}
// Use an IIFE to avoid polluting the global namespace as much as possible
(() => {
@ -48,13 +55,6 @@ const deepObjectEquals = (a, b) => {
return true;
}
class ExpectationError extends Error {
constructor(message, fileName, lineNumber) {
super(message, fileName, lineNumber);
this.name = "ExpectationError";
}
}
class Expector {
constructor(target, inverted) {
this.target = target;
@ -72,6 +72,8 @@ class Expector {
}
toHaveLength(length) {
this.__expect(typeof this.target.length === "number");
this.__doMatcher(() => {
this.__expect(Object.is(this.target.length, length));
});
@ -80,31 +82,26 @@ class Expector {
toHaveProperty(property, value) {
this.__doMatcher(() => {
let object = this.target;
if (typeof property === "string" && property.includes(".")) {
let propertyArray = [];
while (true) {
while (property.includes(".")) {
let index = property.indexOf(".");
if (index === -1) {
propertyArray.push(property);
break;
}
propertyArray.push(property.substring(0, index));
property = property.substring(index, property.length);
if (index + 1 >= property.length)
break;
property = property.substring(index + 1, property.length);
}
propertyArray.push(property);
property = propertyArray;
}
if (Array.isArray(property)) {
for (let key of property) {
if (object === undefined || object === null) {
if (this.inverted)
return;
throw new ExpectationError();
}
this.__expect(object !== undefined && object !== null);
object = object[key];
}
} else {
@ -117,51 +114,12 @@ class Expector {
});
}
toBeCloseTo(number, numDigits) {
if (numDigits === undefined)
numDigits = 2;
this.__doMatcher(() => {
this.__expect(Math.abs(number - this.target) < (10 ** -numDigits / numDigits));
});
}
toBeDefined() {
this.__doMatcher(() => {
this.__expect(this.target !== undefined);
});
}
toBeFalsey() {
this.__doMatcher(() => {
this.__expect(!this.target);
});
}
toBeGreaterThan(number) {
this.__doMatcher(() => {
this.__expect(this.target > number);
});
}
toBeGreaterThanOrEqual(number) {
this.__doMatcher(() => {
this.__expect(this.target >= number);
});
}
toBeLessThan(number) {
this.__doMatcher(() => {
this.__expect(this.target < number);
});
}
toBeLessThanOrEqual(number) {
this.__doMatcher(() => {
this.__expect(this.target <= number);
});
}
toBeInstanceOf(class_) {
this.__doMatcher(() => {
this.__expect(this.target instanceof class_);
@ -174,12 +132,6 @@ class Expector {
});
}
toBeTruthy() {
this.__doMatcher(() => {
this.__expect(!!this.target);
});
}
toBeUndefined() {
this.__doMatcher(() => {
this.__expect(this.target === undefined);
@ -199,7 +151,7 @@ class Expector {
if (item === element)
return;
}
throw new ExpectationError();
});
}
@ -211,7 +163,7 @@ class Expector {
if (deepEquals(item, element))
return;
}
throw new ExpectationError();
});
}
@ -224,19 +176,26 @@ class Expector {
toThrow(value) {
this.__expect(typeof this.target === "function");
this.__expect(typeof value === "string" || typeof value === "function" || value === undefined);
this.__expect(typeof value === "string"
|| typeof value === "function"
|| typeof value === "object"
|| value === undefined);
this.__doMatcher(() => {
let threw = true;
try {
this.target();
this.__expect(false);
threw = false;
} catch (e) {
if (typeof value === "string") {
this.__expect(e.message.includes(value));
} else if (typeof value === "function") {
this.__expect(e instanceof value);
} else if (typeof value === "object") {
this.__expect(e.message === value.message);
}
}
this.__expect(threw);
});
}
@ -281,13 +240,14 @@ class Expector {
throw new ExpectationError();
}
} else {
let threw;
try {
new Function(this.target)();
throw new ExpectationError();
threw = false;
} catch (e) {
if (e.name !== "SyntaxError")
throw new ExpectationError();
threw = true;
}
this.__expect(threw);
}
}