because OSM tag values are limited to 255 characters, implement code to split addr:flats across addr:flatsN

1 files changed, 66 insertions, 0 deletions

diff --git a/test/valueLimits.js b/test/valueLimits.js
new file mode 100644
index 0000000..a7f7fd7
--- /dev/null
+++ b/test/valueLimits.js
@@ -0,0 +1,66 @@
+const test = require('tape')
+
+const valueLimits = require('../lib/valueLimits.js')
+
+test('less than limit', t => {
+  t.same(
+    valueLimits({
+      properties: {
+        'addr:flats': ''
+      }
+    }),
+    {
+      properties: {
+        'addr:flats': ''
+      }
+    },
+    'less than limit'
+  )
+
+  t.same(
+    valueLimits({
+      properties: {
+        'addr:flats': '#'.repeat(255)
+      }
+    }),
+    {
+      properties: {
+        'addr:flats': '#'.repeat(255)
+      }
+    },
+    'exactly at limit'
+  )
+
+  t.same(
+    valueLimits({
+      properties: {
+        'addr:flats': '#'.repeat(256)
+      }
+    }),
+    {
+      properties: {
+        'addr:flats': '#'.repeat(255),
+        'addr:flats2': '#'.repeat(1)
+      }
+    },
+    'one over limit'
+  )
+
+  t.same(
+    valueLimits({
+      properties: {
+        'addr:flats': '#'.repeat(255 + 255 + 100)
+      }
+    }),
+    {
+      properties: {
+        'addr:flats': '#'.repeat(255),
+        'addr:flats2': '#'.repeat(255),
+        'addr:flats3': '#'.repeat(100)
+      }
+    },
+    'split into three'
+  )
+
+  t.end()
+})