stub-azure-function-context/dist/function-runner.js

Provides an object similar to Function Runtime's context for use in unit testing

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
exports.functionRunner = functionRunner;
const context_builder_1 = require("./context-builder");
const utils_1 = require("./utils");
async function functionRunner(azFunction, bindingDefinitions = [], bindingData = {}, augmentContext) {
    return new Promise((resolve, reject) => {
        const resolver = (err, result) => {
            if (err) {
                reject(err);
            }
            else {
                resolve(result);
            }
        };
        const context = (0, context_builder_1.createContextForFunction)(azFunction, bindingDefinitions, bindingData, resolver);
        if (augmentContext) {
            augmentContext(context);
        }
        const { trigger, inputs, outputs } = (0, utils_1.extractBindings)(context.bindingDefinitions);
        const triggerData = trigger ? bindingData[trigger.name]?.toTrigger() : undefined;
        const inputBindings = inputs.reduce((bindings, { name }) => {
            const binding = bindingData[name];
            if (binding) {
                return {
                    ...bindings,
                    [name]: binding.toContextBinding(),
                };
            }
            return bindings;
        }, {});
        try {
            Promise.resolve(azFunction(context, ...[triggerData, ...Object.values(inputBindings)].filter((val) => !!val)))
                .then((output) => {
                if (outputs.some(({ name }) => name === '$return')) {
                    context.done(null, output);
                }
                else {
                    context.done(null, context.bindings);
                }
            })
                .catch(context.done);
        }
        catch (e) {
            context.done(e);
        }
    });
}
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