Fix git checkout bug and improve dependency swapping

CHANGELOG.md

@@ -5,7 +5,22 @@ All notable changes to this project will be documented in this file.
 The format is based on [Keep a Changelog](http://keepachangelog.com/) and this
 project adheres to [Semantic Versioning](http://semver.org/).
 
-<!-- ## Unreleased -->
+## Unreleased
+
+- Fix `git checkout` errors when using advanced git-based dependency swapping.
+
+- When using dependency swapping, a fresh install will now be performed whenever
+  any dependency version has changed (either in the original `package.json`, or
+  in the dependency-swap configuration). The `label` field is no longer
+  significant in this respect.
+
+- When using advanced git-based dependency swapping `{kind: 'git', ...}`, a
+  query will now always be made to the remote git repo to determine if the
+  configured `ref` is still up to date. If it is stale, a fresh install will be
+  performed.
+
+- When using dependency swapping, temp directories will be deleted when there is
+  an installation failure, so that they are not re-used in a broken state.
 
 ## [0.5.2] 2020-09-08
 

config.schema.json

@@ -166,7 +166,7 @@
             "additionalProperties": false,
             "properties": {
                 "dependencies": {
-                    "$ref": "#/definitions/PackageDependencyMap",
+                    "$ref": "#/definitions/ExtendedPackageDependencyMap",
                     "description": "Map from NPM package to version. Any version syntax supported by NPM is\nsupported here."
                 },
                 "label": {
@@ -226,6 +226,20 @@
             ],
             "type": "object"
         },
+        "ExtendedPackageDependencyMap": {
+            "additionalProperties": {
+                "anyOf": [
+                    {
+                        "$ref": "#/definitions/GitDependency"
+                    },
+                    {
+                        "type": "string"
+                    }
+                ]
+            },
+            "description": "Tachometer's extensions to the NPM \"dependencies\" field, which allows for\nmore advanced configurations.",
+            "type": "object"
+        },
         "FirefoxConfig": {
             "additionalProperties": false,
             "properties": {
@@ -333,20 +347,6 @@
             ],
             "type": "object"
         },
-        "PackageDependencyMap": {
-            "additionalProperties": {
-                "anyOf": [
-                    {
-                        "$ref": "#/definitions/GitDependency"
-                    },
-                    {
-                        "type": "string"
-                    }
-                ]
-            },
-            "description": "A mapping from NPM package name to version specifier, as used in a\npackage.json's \"dependencies\" and \"devDependencies\".",
-            "type": "object"
-        },
         "PerformanceEntryMeasurement": {
             "additionalProperties": false,
             "properties": {

src/configfile.ts

@@ -15,7 +15,7 @@ import * as jsonschema from 'jsonschema';
 import {BrowserConfig, BrowserName, parseBrowserConfigString, validateBrowserConfig} from './browser';
 import {Config, parseHorizons, urlFromLocalPath} from './config';
 import * as defaults from './defaults';
-import {BenchmarkSpec, Measurement, measurements, PackageDependencyMap} from './types';
+import {BenchmarkSpec, ExtendedPackageDependencyMap, Measurement, measurements} from './types';
 import {isHttpUrl} from './util';
 
 /**
@@ -266,7 +266,7 @@ interface ConfigFilePackageVersion {
    * Map from NPM package to version. Any version syntax supported by NPM is
    * supported here.
    */
-  dependencies: PackageDependencyMap;
+  dependencies: ExtendedPackageDependencyMap;
 }
 
 /**

src/test/versions_test.ts

@@ -15,7 +15,7 @@ import * as path from 'path';
 
 import * as defaults from '../defaults';
 import {BenchmarkSpec} from '../types';
-import {hashStrings, makeServerPlans, ServerPlan} from '../versions';
+import {hashStrings, makeServerPlans, ServerPlan, tachometerVersion} from '../versions';
 import {testData} from './test_helpers';
 
 const defaultBrowser = {
@@ -119,8 +119,14 @@ suite('versions', () => {
       const {plans: actualPlans, gitInstalls: actualGitInstalls} =
           await makeServerPlans(testData, tempDir, specs);
 
-      const v1Hash = hashStrings(path.join(testData, 'mylib'), 'v1');
-      const v2Hash = hashStrings(path.join(testData, 'mylib'), 'v2');
+      const v1Hash = hashStrings(
+          tachometerVersion,
+          path.join(testData, 'mylib', 'package.json'),
+          JSON.stringify([['mylib', '1.0.0'], ['otherlib', '0.0.0']]));
+      const v2Hash = hashStrings(
+          tachometerVersion,
+          path.join(testData, 'mylib', 'package.json'),
+          JSON.stringify([['mylib', '2.0.0'], ['otherlib', '0.0.0']]));
 
       const expectedPlans: ServerPlan[] = [
         {
@@ -217,7 +223,10 @@ suite('versions', () => {
       const {plans: actualPlans, gitInstalls: actualGitInstalls} =
           await makeServerPlans(path.join(testData, 'mylib'), tempDir, specs);
 
-      const v1Hash = hashStrings(path.join(testData, 'mylib'), 'v1');
+      const v1Hash = hashStrings(
+          tachometerVersion,
+          path.join(testData, 'mylib', 'package.json'),
+          JSON.stringify([['mylib', '1.0.0'], ['otherlib', '0.0.0']]));
       const expectedPlans: ServerPlan[] = [
         {
           specs: [specs[0]],

src/types.ts

@@ -29,6 +29,14 @@ export class Deferred<T> {
  * package.json's "dependencies" and "devDependencies".
  */
 export interface PackageDependencyMap {
+  [pkg: string]: string;
+}
+
+/**
+ * Tachometer's extensions to the NPM "dependencies" field, which allows for
+ * more advanced configurations.
+ */
+export interface ExtendedPackageDependencyMap {
   [pkg: string]: string|GitDependency;
 }
 
@@ -58,7 +66,7 @@ export interface GitDependency {
  */
 export interface PackageVersion {
   label: string;
-  dependencyOverrides: PackageDependencyMap;
+  dependencyOverrides: ExtendedPackageDependencyMap;
 }
 
 /** The subset of the format of an NPM package.json file we care about. */