1 files changed, 110 insertions, 0 deletions
diff --git a/preact-router/test/util.js b/preact-router/test/util.js
new file mode 100644
index 0000000..69921b7
--- /dev/null
+++ b/preact-router/test/util.js
@@ -0,0 +1,110 @@
+import { exec, pathRankSort, prepareVNodeForRanking, segmentize, rank } from 'src/util';
+
+const strip = str => segmentize(str).join('/');
+
+describe('util', () => {
+	describe('strip', () => {
+		it('should strip preceeding slashes', () => {
+			expect(strip('')).to.equal('');
+			expect(strip('/')).to.equal('');
+			expect(strip('/a')).to.equal('a');
+			expect(strip('//a')).to.equal('a');
+			expect(strip('//a/')).to.equal('a');
+		});
+
+		it('should strip trailing slashes', () => {
+			expect(strip('')).to.equal('');
+			expect(strip('/')).to.equal('');
+			expect(strip('a/')).to.equal('a');
+			expect(strip('/a//')).to.equal('a');
+		});
+	});
+
+	describe('rank', () => {
+		it('should return rank of path segments', () => {
+			expect(rank('')).to.equal('5');
+			expect(rank('/')).to.equal('5');
+			expect(rank('//')).to.equal('5');
+			expect(rank('a/b/c')).to.equal('555');
+			expect(rank('/a/b/c/')).to.equal('555');
+			expect(rank('/:a/b?/:c?/:d*/:e+')).to.eql('45312');
+		});
+	});
+
+	describe('segmentize', () => {
+		it('should split path on slashes', () => {
+			expect(segmentize('')).to.eql(['']);
+			expect(segmentize('/')).to.eql(['']);
+			expect(segmentize('//')).to.eql(['']);
+			expect(segmentize('a/b/c')).to.eql(['a','b','c']);
+			expect(segmentize('/a/b/c/')).to.eql(['a','b','c']);
+		});
+	});
+
+	describe('pathRankSort', () => {
+		it('should sort by highest rank first', () => {
+			let paths = arr => arr.map( path => ({ props:{path}} ) );
+			let clean = vnode => { delete vnode.rank; delete vnode.index; return vnode; };
+
+			expect(
+				paths(['/:a*', '/a', '/:a+', '/:a?', '/a/:b*']).filter(prepareVNodeForRanking).sort(pathRankSort).map(clean)
+			).to.eql(
+				paths(['/a/:b*', '/a', '/:a?', '/:a+', '/:a*'])
+			);
+		});
+
+		it('should return default routes last', () => {
+			let paths = arr => arr.map( path => ({props:{path}}) );
+			let clean = vnode => { delete vnode.rank; delete vnode.index; return vnode; };
+
+			let defaultPath = {props:{default:true}};
+			let p = paths(['/a/b/', '/a/b', '/', 'b']);
+			p.splice(2,0,defaultPath);
+
+			expect(
+				p.filter(prepareVNodeForRanking).sort(pathRankSort).map(clean)
+			).to.eql(
+				paths(['/a/b/', '/a/b', '/', 'b']).concat(defaultPath)
+			);
+		});
+	});
+
+	describe('exec', () => {
+		it('should match explicit equality', () => {
+			expect(exec('/','/', {})).to.eql({});
+			expect(exec('/a', '/a', {})).to.eql({});
+			expect(exec('/a', '/b', {})).to.eql(false);
+			expect(exec('/a/b', '/a/b', {})).to.eql({});
+			expect(exec('/a/b', '/a/a', {})).to.eql(false);
+			expect(exec('/a/b', '/b/b', {})).to.eql(false);
+		});
+
+		it('should match param segments', () => {
+			expect(exec('/', '/:foo', {})).to.eql(false);
+			expect(exec('/bar', '/:foo', {})).to.eql({ foo:'bar' });
+		});
+
+		it('should match optional param segments', () => {
+			expect(exec('/', '/:foo?', {})).to.eql({ foo:'' });
+			expect(exec('/bar', '/:foo?', {})).to.eql({ foo:'bar' });
+			expect(exec('/', '/:foo?/:bar?', {})).to.eql({ foo:'', bar:'' });
+			expect(exec('/bar', '/:foo?/:bar?', {})).to.eql({ foo:'bar', bar:'' });
+			expect(exec('/bar', '/:foo?/bar', {})).to.eql(false);
+			expect(exec('/foo/bar', '/:foo?/bar', {})).to.eql({ foo:'foo' });
+		});
+
+		it('should match splat param segments', () => {
+			expect(exec('/', '/:foo*', {})).to.eql({ foo:'' });
+			expect(exec('/a', '/:foo*', {})).to.eql({ foo:'a' });
+			expect(exec('/a/b', '/:foo*', {})).to.eql({ foo:'a/b' });
+			expect(exec('/a/b/c', '/:foo*', {})).to.eql({ foo:'a/b/c' });
+		});
+
+		it('should match required splat param segments', () => {
+			expect(exec('/', '/:foo+', {})).to.eql(false);
+			expect(exec('/a', '/:foo+', {})).to.eql({ foo:'a' });
+			expect(exec('/a/b', '/:foo+', {})).to.eql({ foo:'a/b' });
+			expect(exec('/a/b/c', '/:foo+', {})).to.eql({ foo:'a/b/c' });
+		});
+	});
+});