Test seek() integration (#661)

test/iterator-test.js

@@ -2,6 +2,7 @@ var memdown = require('memdown')
 var assert = require('referee').assert
 var refute = require('referee').refute
 var buster = require('bustermove')
+var encode = require('encoding-down')
 var levelup = require('../lib/levelup')
 var common = require('./common')
 
@@ -32,3 +33,76 @@ buster.testCase('iterator', {
     })
   }
 })
+
+buster.testCase('iterator#seek()', {
+  setUp: function (done) {
+    this.mem = memdown()
+    this.mem.open(function () {})
+    this.mem.batch([
+      { type: 'put', key: '"a"', value: 'a' },
+      { type: 'put', key: '"b"', value: 'b' }
+    ], function () {})
+    this.mem.close(done)
+  },
+  tearDown: function (done) {
+    this.db.close(done)
+  },
+
+  'without encoding, without deferred-open': function (done) {
+    var db = this.db = levelup(this.mem)
+
+    db.open(function (err) {
+      refute(err)
+
+      var it = db.iterator({ keyAsBuffer: false })
+
+      it.seek('"b"')
+      it.next(function (err, key, value) {
+        refute(err)
+        assert.equals(key, '"b"')
+        it.end(done)
+      })
+    })
+  },
+
+  'without encoding, with deferred-open': function (done) {
+    var db = this.db = levelup(this.mem)
+    var it = db.iterator({ keyAsBuffer: false })
+
+    it.seek('"b"')
+    it.next(function (err, key, value) {
+      refute(err)
+      assert.equals(key, '"b"')
+      it.end(done)
+    })
+  },
+
+  'with encoding, with deferred-open': function (done) {
+    var db = this.db = levelup(encode(this.mem, { keyEncoding: 'json' }))
+    var it = db.iterator()
+
+    it.seek('b')
+    it.next(function (err, key, value) {
+      refute(err)
+      assert.equals(key, 'b')
+      it.end(done)
+    })
+  },
+
+  'with encoding, without deferred-open': function (done) {
+    var db = this.db = levelup(encode(this.mem, { keyEncoding: 'json' }))
+
+    db.open(function (err) {
+      refute(err)
+
+      var it = db.iterator()
+
+      it.seek('b')
+      it.next(function (err, key, value) {
+        refute(err)
+        assert.equals(key, 'b')
+        it.end(done)
+      })
+    })
+  }
+})