/// <reference types="@types/node" />
/**
 * @module resolve-cascade
 **/
import * as assert from "assert";
import * as parse5 from "parse5";
import { ComputedStyle, ElementStyle, FullCascade } from "./index";
export interface AssertionResult {
    expectedFullCascade: FullCascade;
    expectedDoc: parse5.Document;
    expectedCss: string;
    actualFullCascade: FullCascade;
    actualDoc: parse5.Document;
    actualCss: string;
}
export declare class MarkupMismatchError extends assert.AssertionError {
    constructor(actual: string, expected: string, message?: string);
}
export interface CascadeInformation {
    expectedHtml: string;
    actualHtml: string;
    expectedElement: string;
    actualElement: string;
    expectedCss: string;
    actualCss: string;
    expectedCascade: ElementStyle | undefined;
    actualCascade: ElementStyle | undefined;
    expectedStyles: ComputedStyle | undefined;
    actualStyles: ComputedStyle | undefined;
}
export declare class ElementStyleMismatch extends assert.AssertionError implements CascadeInformation {
    expectedHtml: string;
    actualHtml: string;
    expectedElement: string;
    actualElement: string;
    expectedCss: string;
    actualCss: string;
    expectedCascade: ElementStyle;
    actualCascade: ElementStyle;
    expectedStyles: ComputedStyle | undefined;
    actualStyles: ComputedStyle | undefined;
    constructor(details: CascadeInformation, message?: string);
}
/**
 * This function makes sure two styles are functionally equivalent.
 * for the given css property.
 *
 * Currently this assures that initial values which can be different
 * but functionally equivalent, are treated as the same value.
 *
 * it also does a case insensitive value check and some whitespace
 * normalization.
 *
 * @param property The css property
 * @param actualValue a css value for the property
 * @param expectedValue a css value for the property
 */
export declare function assertSameStyle(property: string, actualValue: string, expectedValue: string): void;
export declare function assertSameCascade(expectedCss: string, actualCss: string, expectedHtml: string, actualHtml: string): Promise<AssertionResult>;
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