initial

node_modules/onoff/test/change-configuration.js

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+"use strict";
+
+const assert = require('assert');
+const Gpio = require('../onoff').Gpio;
+
+let output = new Gpio(8, 'out');
+let input = new Gpio(7, 'in', 'both');
+
+function watchWithSecondConfiguration() {
+  input.watch((err, value) => {
+    assert(!err, 'error during interrupt detection');
+    assert(value === 1, 'expected interrupt on rising edge');
+
+    setTimeout(() => {
+      input.unexport();
+      output.unexport();
+
+      console.log('ok - ' + __filename);
+    }, 10);
+  });
+
+  output.writeSync(1);
+}
+
+function changeConfiguration() {
+  input.unwatchAll();
+
+  let temp = output;
+  temp.setDirection('in');
+  output = input;
+  input = temp;
+
+  output.setEdge('none');
+  output.setDirection('out');
+  output.writeSync(0);
+  assert(output.direction() === 'out', 'expected direction to be out');
+  assert(output.edge() === 'none', 'expected edge to be none');
+  assert(output.readSync() === 0, 'expected value to be 0');
+
+  input.setEdge('rising');
+  assert(input.direction() === 'in', 'expected direction to be in');
+  assert(input.edge() === 'rising', 'expected edge to be rising');
+  assert(input.readSync() === 0, 'expected value to be 0');
+
+  watchWithSecondConfiguration();
+}
+
+function watchWithFirstConfiguration() {
+  input.watch((err, value) => {
+    assert(!err, 'error during interrupt detection');
+    assert(value === 1, 'expected interrupt on rising edge');
+
+    setTimeout(changeConfiguration, 10);
+  });
+
+  output.writeSync(1);
+}
+
+watchWithFirstConfiguration();