Ensure we're picking up the custom system config

test/fast/config-test.ts

@@ -1,4 +1,5 @@
-import { GitProcess } from '../../lib'
+import { join, resolve } from 'path'
+import { GitProcess, resolveGitDir } from '../../lib'
 import * as os from 'os'
 
 describe('config', () => {
@@ -21,4 +22,30 @@ describe('config', () => {
       expect(result.stdout.trim()).toBe('')
     }
   })
+
+  it('turns on useHttpPath for Azure Devops', async () => {
+    const result = await GitProcess.exec(
+      ['config', '--system', 'credential.https://dev.azure.com.useHttpPath'],
+      os.homedir()
+    )
+    expect(result.stdout.trim()).toBe('true')
+  })
+
+  it('uses the custom system config from dugite-native', async () => {
+    if (process.platform !== 'win32') {
+      const result = await GitProcess.exec(
+        ['config', '--show-origin', '--system', 'include.path'],
+        os.homedir()
+      )
+      const [origin, value] = result.stdout.trim().split('\t')
+
+      const originPath = origin.substring('file:'.length)
+
+      expect(resolve(originPath)).toBe(
+        join(resolveGitDir(process.env), 'etc', 'gitconfig')
+      )
+
+      expect(value).toBe('/etc/gitconfig')
+    }
+  })
 })