1 files changed, 147 insertions, 0 deletions
diff --git a/deps/npm/node_modules/libnpmdiff/test/index.js b/deps/npm/node_modules/libnpmdiff/test/index.js
new file mode 100644
index 0000000000..88b474c111
--- /dev/null
+++ b/deps/npm/node_modules/libnpmdiff/test/index.js
@@ -0,0 +1,147 @@
+const { resolve } = require('path')
+
+const t = require('tap')
+
+const diff = require('../index.js')
+
+const normalizePath = p => p
+  .replace(/\\+/g, '/')
+  .replace(/\r\n/g, '\n')
+
+t.cleanSnapshot = (str) => normalizePath(str)
+  .replace(normalizePath(process.execPath), 'node')
+
+const json = (obj) => `${JSON.stringify(obj, null, 2)}\n`
+
+t.test('compare two diff specs', async t => {
+  const path = t.testdir({
+    a1: {
+      'package.json': json({
+        name: 'a',
+        version: '1.0.0',
+      }),
+      'index.js': 'module.exports =\n  "a1"\n',
+    },
+    a2: {
+      'package.json': json({
+        name: 'a',
+        version: '2.0.0',
+      }),
+      'index.js': 'module.exports =\n  "a2"\n',
+    },
+  })
+
+  const a = `file:${resolve(path, 'a1')}`
+  const b = `file:${resolve(path, 'a2')}`
+
+  t.resolveMatchSnapshot(diff([a, b], {}), 'should output expected diff')
+})
+
+t.test('using single arg', async t => {
+  await t.rejects(
+    diff(['abbrev@1.0.3']),
+    /libnpmdiff needs two arguments to compare/,
+    'should throw EDIFFARGS error'
+  )
+})
+
+t.test('too many args', async t => {
+  const args = ['abbrev@1.0.3', 'abbrev@1.0.4', 'abbrev@1.0.5']
+  await t.rejects(
+    diff(args),
+    /libnpmdiff needs two arguments to compare/,
+    'should output diff against cwd files'
+  )
+})
+
+t.test('folder in node_modules', async t => {
+  const path = t.testdir({
+    node_modules: {
+      a: {
+        'package.json': json({
+          name: 'a',
+          version: '1.0.0',
+          scripts: {
+            prepare: `${process.execPath} prepare.js`,
+          },
+        }),
+        'prepare.js': 'throw new Error("ERR")',
+        node_modules: {
+          b: {
+            'package.json': json({
+              name: 'b',
+              version: '2.0.0',
+              scripts: {
+                prepare: `${process.execPath} prepare.js`,
+              },
+            }),
+            'prepare.js': 'throw new Error("ERR")',
+          },
+        },
+      },
+    },
+    packages: {
+      a: {
+        'package.json': json({
+          name: 'a',
+          version: '1.0.1',
+          scripts: {
+            prepare: `${process.execPath} prepare.js`,
+          },
+        }),
+        'prepare.js': '',
+      },
+      b: {
+        'package.json': json({
+          name: 'b',
+          version: '2.0.1',
+          scripts: {
+            prepare: `${process.execPath} prepare.js`,
+          },
+        }),
+        'prepare.js': '',
+      },
+    },
+    'package.json': json({
+      name: 'my-project',
+      version: '1.0.0',
+    }),
+  })
+
+  t.test('top-level, absolute path', async t => {
+    t.resolveMatchSnapshot(diff([
+      `file:${resolve(path, 'node_modules/a')}`,
+      `file:${resolve(path, 'packages/a')}`,
+    ], { where: path }), 'should output expected diff')
+  })
+  t.test('top-level, relative path', async t => {
+    const _cwd = process.cwd()
+    process.chdir(path)
+    t.teardown(() => {
+      process.chdir(_cwd)
+    })
+
+    t.resolveMatchSnapshot(diff([
+      'file:./node_modules/a',
+      'file:./packages/a',
+    ], { where: path }), 'should output expected diff')
+  })
+  t.test('nested, absolute path', async t => {
+    t.resolveMatchSnapshot(diff([
+      `file:${resolve(path, 'node_modules/a/node_modules/b')}`,
+      `file:${resolve(path, 'packages/b')}`,
+    ], { where: path}), 'should output expected diff')
+  })
+  t.test('nested, relative path', async t => {
+    const _cwd = process.cwd()
+    process.chdir(path)
+    t.teardown(() => {
+      process.chdir(_cwd)
+    })
+
+    t.resolveMatchSnapshot(diff([
+      'file:./node_modules/a/node_modules/b',
+      'file:./packages/b',
+    ], { where: path }), 'should output expected diff')
+  })
+})