fix: getConfig always returns null despite values being present in configuration

Resolves an issue whereby `(await git.getConfig(key)).value` would always return `null`, despite `(await git.listConfig()).all[key]` having the correct value.

Author: steveukx

src/lib/responses/ConfigList.ts

@@ -49,7 +49,7 @@ export function configListParser(text: string): ConfigList {
    const config = new ConfigList();
 
    for (const item of configParser(text)) {
-      config.addValue(item.file, item.key, item.value);
+      config.addValue(item.file, String(item.key), item.value);
    }
 
    return config;
@@ -60,7 +60,7 @@ export function configGetParser(text: string, key: string): ConfigGetResult {
    const values: string[] = [];
    const scopes: Map<string, string[]> = new Map();
 
-   for (const item of configParser(text)) {
+   for (const item of configParser(text, key)) {
       if (item.key !== key) {
          continue;
       }
@@ -87,12 +87,20 @@ function configFilePath(filePath: string): string {
    return filePath.replace(/^(file):/, '');
 }
 
-function* configParser(text: string) {
+function* configParser(text: string, requestedKey: string | null = null) {
    const lines = text.split('\0');
 
    for (let i = 0, max = lines.length - 1; i < max;) {
       const file = configFilePath(lines[i++]);
-      const [key, value] = splitOn(lines[i++], '\n');
+
+      let value = lines[i++];
+      let key = requestedKey;
+
+      if (value.includes('\n')) {
+         const line = splitOn(value, '\n');
+         key = line[0];
+         value = line[1];
+      }
 
       yield {file, key, value};
    }

test/integration/config.spec.ts

@@ -1,4 +1,5 @@
 import { createTestContext, newSimpleGit, setUpInit, SimpleGitTestContext } from '../__fixtures__';
+import { GitConfigScope } from '../..';
 import { SimpleGit } from '../../typings';
 
 describe('config', () => {
@@ -16,6 +17,26 @@ describe('config', () => {
       return config.split('\n').filter(line => line.includes(test));
    }
 
+   it('gets config', async () => {
+      await git.addConfig('user.name', 'BAZ');
+      expect((await git.getConfig('user.name')).value).toBe('BAZ');
+   });
+
+   it('lists config', async () => {
+      await git.addConfig('user.name', 'FOO');
+
+      const merged = await git.listConfig();
+      const global = await git.listConfig(GitConfigScope.global);
+      const local = await git.listConfig(GitConfigScope.local);
+
+      expect(global.all).toEqual(merged.values[merged.files[1]]);
+      expect(local.all).toEqual(merged.values[merged.files[2]]);
+
+      expect(global.all['user.name']).not.toBe('FOO');
+      expect(merged.all['user.name']).toBe('FOO');
+      expect(local.all['user.name']).toBe('FOO');
+   })
+
    it('adds a configuration setting', async () => {
       await git.addConfig('user.name', 'FOO BAR');