(re)adding tests, migration

test/context.js

@@ -0,0 +1,56 @@
+global.self = global;
+const env = process.argv[3];
+import { expect } from "chai";
+let FlexSearch = await import(env ? "../dist/" + env + ".js" : "../src/bundle.js");
+if(FlexSearch.default) FlexSearch = FlexSearch.default;
+if(FlexSearch.FlexSearch) FlexSearch = FlexSearch.FlexSearch;
+const { Index, Document, Worker, Charset: _Charset, Encoder, Resolver } = FlexSearch;
+const build_light = env && env.includes(".light");
+const build_compact = env && env.includes(".compact");
+const build_esm = !env || env.startsWith("module");
+const Charset = _Charset || (await import("../src/charset.js")).default;
+
+describe("Context", function(){
+
+    it("Should have been added properly to the context", function(){
+
+        let index = new Index({
+            tokenize: "strict",
+            context: {
+                depth: 2
+            }
+        });
+
+        index.add(0, "zero one two three four five six seven eight nine ten");
+
+        expect(index.reg.size).to.equal(1);
+        expect(index.search("zero one")).to.include(0);
+        expect(index.search("zero two")).to.include(0);
+        expect(index.search("zero three").length).to.equal(0);
+        expect(index.search("three seven").length).to.equal(0);
+        expect(index.search("three five seven")).to.include(0);
+        expect(index.search("eight six four")).to.include(0);
+        expect(index.search("seven five three")).to.include(0);
+        expect(index.search("three foobar seven").length).to.equal(0);
+        expect(index.search("seven foobar three").length).to.equal(0);
+        expect(index.search("eight ten")).to.include(0);
+        expect(index.search("ten nine seven eight six five three four two zero one")).to.include(0);
+
+        index.add(1, "1 2 3 1 4 2 5 1");
+
+        expect(index.search("1")).to.include(1);
+        expect(index.search("1 5")).to.include(1);
+        expect(index.search("2 4 1")).to.include(1);
+
+        index = new Index({
+            tokenize: "strict",
+            context: {
+                depth: 2,
+                bidirectional: false
+            }
+        });
+
+        index.add(0, "zero one two three four five six seven eight nine ten");
+        expect(index.search("ten nine seven eight six five three four two zero one").length).to.equal(0);
+    });
+});