Add tests

dingosky · dingosky · commit fc65c3a04541 · 2017-08-18T13:30:47.000-07:00
Session ID and bytes needed
diff --git a/test/random.js b/test/random.js
@@ -93,6 +93,39 @@ test('Char Set Strings', t => {
   t.is(random.stringWithBytes( 6, [0x27], charSet2), '001001')
 })
 
+test('Session ID', t => {
+  let random = new Random()
+  t.is(random.sessionID(charSet64).length,  22)
+  t.is(random.sessionID().length,           26)
+  t.is(random.sessionID(charSet16).length,  32)
+  t.is(random.sessionID(charSet8).length,   43)
+  t.is(random.sessionID(charSet4).length,   64)
+  t.is(random.sessionID(charSet2).length,  128)
+})
+
+test('Bytes needed', t => {
+  let random = new Random()
+  let charSets = [charSet64, charSet32, charSet16, charSet8, charSet4, charSet2]
+
+  let doTest = (charSet, bits) => {
+    let bytesNeeded = charSet.bytesNeeded(bits)
+    let atLeast = Math.ceil(bits/8)
+    t.true(atLeast <= bytesNeeded, 'CharSet: ' + charSet.chars() + ', Bits ' + bits)
+    let atMost = atLeast + 1
+    t.true(bytesNeeded <= atMost, 'CharSet: ' + charSet.chars() + ', Bits ' + bits)
+  }
+  
+  charSets.forEach( (charSet) => {
+    random.use(charSet)
+    for (let bits = 0; bits < 10; bits++) {
+      doTest(charSet, bits)
+    }
+    for (let bits = 12; bits < 133; bits += 5) {
+      doTest(charSet, bits)
+    }
+  })
+})
+
 test('Invalid bytes', t => {
   let random
   let regex = /Insufficient/
