blacklist as an util

test/shared/blacklists.test.js

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+import { includes } from 'shared/blacklists';
+
+describe("shared/blacklist", () => {
+  it('matches by *', () => {
+    let blacklist = ['*'];
+
+    expect(includes(blacklist, 'https://github.com/abc')).to.be.true;
+  })
+
+  it('matches by hostname', () => {
+    let blacklist = ['github.com'];
+
+    expect(includes(blacklist, 'https://github.com')).to.be.true;
+    expect(includes(blacklist, 'https://gist.github.com')).to.be.false;
+    expect(includes(blacklist, 'https://github.com/ueokande')).to.be.true;
+    expect(includes(blacklist, 'https://github.org')).to.be.false;
+    expect(includes(blacklist, 'https://google.com/search?q=github.org')).to.be.false;
+  })
+
+  it('matches by hostname with wildcard', () => {
+    let blacklist = ['*.github.com'];
+
+    expect(includes(blacklist, 'https://github.com')).to.be.false;
+    expect(includes(blacklist, 'https://gist.github.com')).to.be.true;
+  })
+
+  it('matches by path', () => {
+    let blacklist = ['github.com/abc'];
+
+    expect(includes(blacklist, 'https://github.com/abc')).to.be.true;
+    expect(includes(blacklist, 'https://github.com/abcdef')).to.be.false;
+    expect(includes(blacklist, 'https://gist.github.com/abc')).to.be.false;
+  })
+
+  it('matches by path with wildcard', () => {
+    let blacklist = ['github.com/abc*'];
+
+    expect(includes(blacklist, 'https://github.com/abc')).to.be.true;
+    expect(includes(blacklist, 'https://github.com/abcdef')).to.be.true;
+    expect(includes(blacklist, 'https://gist.github.com/abc')).to.be.false;
+  })
+});