IE compatibility and add unit tests

src/core/router/history/base.js

@@ -74,11 +74,11 @@ export class History {
     if (local) {
       const idIndex = currentRoute.indexOf('?')
       path =
-        (idIndex > 0 ? currentRoute.substr(0, idIndex) : currentRoute) + path
+        (idIndex > 0 ? currentRoute.substring(0, idIndex) : currentRoute) + path
     }
 
-    if (this.config.relativePath && !path.startsWith('/')) {
-      const currentDir = currentRoute.substr(0, currentRoute.lastIndexOf('/') + 1)
+    if (this.config.relativePath && path.indexOf('/') !== 0) {
+      const currentDir = currentRoute.substring(0, currentRoute.lastIndexOf('/') + 1)
       return cleanPath(resolvePath(currentDir + path))
     }
     return cleanPath('/' + path)

test/unit/base.js

@@ -0,0 +1,62 @@
+/* eslint-env node, chai, mocha */
+require = require('esm')(module/*, options*/)
+const {expect} = require('chai')
+const {History} = require('../../src/core/router/history/base')
+
+class MockHistory extends History {
+  parse(path) {
+    return {path}
+  }
+}
+
+describe('router/history/base', function () {
+  describe('relativePath true', function () {
+    var history
+
+    beforeEach(function () {
+      history = new MockHistory({relativePath: true})
+    })
+
+    it('toURL', function () {
+      // WHEN
+      const url = history.toURL('guide.md', {}, '/zh-ch/')
+
+      // THEN
+      expect(url).equal('/zh-ch/guide')
+    })
+
+    it('toURL with double dot', function () {
+      // WHEN
+      const url = history.toURL('../README.md', {}, '/zh-ch/')
+
+      // THEN
+      expect(url).equal('/README')
+    })
+
+    it('toURL child path', function () {
+      // WHEN
+      const url = history.toURL('config/example.md', {}, '/zh-ch/')
+
+      // THEN
+      expect(url).equal('/zh-ch/config/example')
+    })
+
+    it('toURL absolute path', function () {
+      // WHEN
+      const url = history.toURL('/README', {}, '/zh-ch/')
+
+      // THEN
+      expect(url).equal('/README')
+    })
+  })
+
+  it('toURL without relative path', function () {
+    const history = new MockHistory({relativePath: false})
+
+    // WHEN
+    const url = history.toURL('README', {}, '/zh-ch/')
+
+    // THEN
+    expect(url).equal('/README')
+  })
+})

test/unit/util.js

@@ -0,0 +1,30 @@
+/* eslint-env node, chai, mocha */
+require = require('esm')(module/*, options*/)
+const {expect} = require('chai')
+const {resolvePath} = require('../../src/core/router/util')
+
+describe('router/util', function () {
+  it('resolvePath', async function () {
+    // WHEN
+    const result = resolvePath('hello.md')
+
+    // THEN
+    expect(result).equal('/hello.md')
+  })
+
+  it('resolvePath with dot', async function () {
+    // WHEN
+    const result = resolvePath('./hello.md')
+
+    // THEN
+    expect(result).equal('/hello.md')
+  })
+
+  it('resolvePath with two dots', async function () {
+    // WHEN
+    const result = resolvePath('test/../hello.md')
+
+    // THEN
+    expect(result).equal('/hello.md')
+  })
+})