Add path join tests.

test/path-join.spec.js

@@ -0,0 +1,99 @@
+import { equal } from 'assert'
+import Path from 'path'
+import { join, posixJoin, win32Join } from '../src/utils/path-join.js'
+
+const platform = process.platform
+
+const createTestData = s => [
+	[s],
+  [s, 'test'],
+  ['test'],
+  ['test', s],
+  [`test${s}`, s],
+  [s, `${s}test`],
+  [`test${s}`, s, `${s}${s}`, `${s}a`],
+  [`test${s}`, '.', `${s}a`],
+  [`test${s}.${s}a`],
+  ['test', s, '.', s]
+]
+
+const posixTestData = createTestData('/')
+const win32TestData = createTestData('\\')
+
+describe('Path posix join', () => {
+  it('gives the same results as Path using posix join on posix paths', () => {
+    for (const data of posixTestData) {
+      equal(Path.posix.join(...data), posixJoin(...data))
+    }
+  })
+
+  it('gives the same results as Path using posix join on win32 paths', () => {
+    for (const data of win32TestData) {
+      equal(Path.posix.join(...data), posixJoin(...data))
+    }
+  })
+})
+
+describe('Path win32 join', () => {
+  it('gives the same results as Path using win32 join on posix paths', () => {
+    for (const data of posixTestData) {
+      equal(Path.win32.join(...data), win32Join(...data))
+    }
+  })
+
+  it('gives the same results as Path using win32 join on win32 paths', () => {
+    for (const data of win32TestData) {
+      equal(Path.win32.join(...data), win32Join(...data))
+    }
+  })
+})
+
+describe('Path join on win32', () => {
+  let join;
+
+  before(async () => {
+    Object.defineProperty(process, 'platform', { value: 'win32', writable: true })
+    join = (await import('../src/utils/path-join.js?win32')).join
+  });
+
+  after(() => {
+    Object.defineProperty(process, 'platform', { value: platform, writable: false })
+  });
+
+  it('gives the same results as Path using posix paths', () => {
+    for (const data of posixTestData) {
+      equal(Path.win32.join(...data), join(...data))
+    }
+  })
+
+  it('gives the same results as Path using win32 paths', () => {
+    for (const data of win32TestData) {
+      equal(Path.win32.join(...data), join(...data))
+    }
+  })
+})
+
+describe('Path join on posix', () => {
+  let join;
+
+  before(async () => {
+    Object.defineProperty(process, 'platform', { value: 'linux', writable: true })
+    join = (await import('../src/utils/path-join.js?linux')).join
+  });
+
+  after(() => {
+    Object.defineProperty(process, 'platform', { value: platform, writable: false })
+  });
+
+  it('gives the same results as Path using posix paths', () => {
+    for (const data of posixTestData) {
+      equal(Path.posix.join(...data), join(...data))
+    }
+  })
+
+  it('gives the same results as Path using win32 paths', () => {
+    for (const data of win32TestData) {
+      equal(Path.posix.join(...data), join(...data))
+    }
+  })
+})