initial

node_modules/onoff/test/configure-and-check-active-low.js

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+"use strict";
+
+/*
+ * In this test, GPIO7 is connected to one end of a 1kΩ current limiting
+ * resistor and GPIO8 is connected to the other end of the resistor.
+ */
+const Gpio = require('../onoff').Gpio;
+const assert = require('assert');
+const input = new Gpio(7, 'in');
+const output = new Gpio(8, 'out', {activeLow: true});
+
+assert(input.activeLow() === false);
+assert(output.activeLow() === true);
+output.writeSync(0);
+assert(input.readSync() === 1);
+output.writeSync(1);
+assert(input.readSync() === 0);
+
+output.setActiveLow(false);
+assert(input.activeLow() === false);
+assert(output.activeLow() === false);
+output.writeSync(0);
+assert(input.readSync() === 0);
+output.writeSync(1);
+assert(input.readSync() === 1);
+
+input.setActiveLow(true);
+assert(input.activeLow() === true);
+assert(output.activeLow() === false);
+output.writeSync(0);
+assert(input.readSync() === 1);
+output.writeSync(1);
+assert(input.readSync() === 0);
+
+input.unexport();
+output.unexport();
+
+console.log('ok - ' + __filename);
+