From a219a8abad1110b3dcf9b7d95291b9a42f6f8880 Mon Sep 17 00:00:00 2001
From: Andrew Harvey <andrew@alantgeo.com.au>
Date: Wed, 5 May 2021 20:32:42 +1000
Subject: lib unitsToRanges

---
 test/unitsToRanges.js | 43 +++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 43 insertions(+)
 create mode 100644 test/unitsToRanges.js

(limited to 'test')

diff --git a/test/unitsToRanges.js b/test/unitsToRanges.js
new file mode 100644
index 0000000..53d08aa
--- /dev/null
+++ b/test/unitsToRanges.js
@@ -0,0 +1,43 @@
+const test = require('tape')
+
+const unitsToRanges = require('../lib/unitsToRanges.js')
+
+test('units list to addr:flats', t => {
+  t.same(
+    unitsToRanges([]),
+    null,
+    'empty input returns empty output'
+  )
+
+  t.same(
+    unitsToRanges(['1'], 100),
+    '1',
+    'single unit'
+  )
+
+  t.same(
+    unitsToRanges(['1', '3']),
+    '1;3',
+    'two units without a range'
+  )
+
+  t.same(
+    unitsToRanges(['1', '2']),
+    '1-2',
+    'two consecutive units form a range'
+  )
+
+  t.same(
+    unitsToRanges(['1', '2', '3']),
+    '1-3',
+    'three consecutive units form a range'
+  )
+
+  t.same(
+    unitsToRanges(['1', '2', '4']),
+    '1-2;4',
+    'range and singular'
+  )
+
+  t.end()
+})
-- 
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