patch sequence appending and updating

integration-tests/append-patches/__snapshots__/append-patches.test.ts.snap

@@ -0,0 +1,87 @@
+// Jest Snapshot v1, https://goo.gl/fbAQLP
+
+exports[`Test append-patches: 00: basic patch file 1`] = `
+"SNAPSHOT: basic patch file
+left-pad+1.3.0.patch
+END SNAPSHOT"
+`;
+
+exports[`Test append-patches: 01: after appending a patch file 1`] = `
+"SNAPSHOT: after appending a patch file
+left-pad+1.3.0+001+initial.patch
+left-pad+1.3.0+002+MillionDollars.patch
+END SNAPSHOT"
+`;
+
+exports[`Test append-patches: 02: the second patch file should go from patch-package to a million dollars 1`] = `
+"SNAPSHOT: the second patch file should go from patch-package to a million dollars
+diff --git a/node_modules/left-pad/index.js b/node_modules/left-pad/index.js
+index a409e14..73d2a7c 100644
+--- a/node_modules/left-pad/index.js
++++ b/node_modules/left-pad/index.js
+@@ -3,7 +3,7 @@
+      * and/or modify it under the terms of the Do What The Fuck You Want
+      * To Public License, Version 2, as published by Sam Hocevar. See
+      * http://www.wtfpl.net/ for more details. */
+-'use patch-package';
++'use a million dollars';
+ module.exports = leftPad;
+ 
+ var cache = [
+END SNAPSHOT"
+`;
+
+exports[`Test append-patches: 03: creating a first patch file with --append 1`] = `
+"SNAPSHOT: creating a first patch file with --append
+left-pad+1.3.0+001+FirstPatch.patch
+END SNAPSHOT"
+`;
+
+exports[`Test append-patches: 04: the squashed patch file should go from use strict to a million dollars 1`] = `
+"SNAPSHOT: the squashed patch file should go from use strict to a million dollars
+diff --git a/node_modules/left-pad/index.js b/node_modules/left-pad/index.js
+index e90aec3..73d2a7c 100644
+--- a/node_modules/left-pad/index.js
++++ b/node_modules/left-pad/index.js
+@@ -3,7 +3,7 @@
+      * and/or modify it under the terms of the Do What The Fuck You Want
+      * To Public License, Version 2, as published by Sam Hocevar. See
+      * http://www.wtfpl.net/ for more details. */
+-'use strict';
++'use a million dollars';
+ module.exports = leftPad;
+ 
+ var cache = [
+END SNAPSHOT"
+`;
+
+exports[`Test append-patches: 05: after appending a billion dollars 1`] = `
+"SNAPSHOT: after appending a billion dollars
+left-pad+1.3.0+001+FirstPatch.patch
+left-pad+1.3.0+002+BillionDollars.patch
+END SNAPSHOT"
+`;
+
+exports[`Test append-patches: 06: after updating the appended patch file to a TRILLION dollars 1`] = `
+"SNAPSHOT: after updating the appended patch file to a TRILLION dollars
+diff --git a/node_modules/left-pad/index.js b/node_modules/left-pad/index.js
+index 73d2a7c..f53ea10 100644
+--- a/node_modules/left-pad/index.js
++++ b/node_modules/left-pad/index.js
+@@ -3,7 +3,7 @@
+      * and/or modify it under the terms of the Do What The Fuck You Want
+      * To Public License, Version 2, as published by Sam Hocevar. See
+      * http://www.wtfpl.net/ for more details. */
+-'use a million dollars';
++'use a trillion dollars';
+ module.exports = leftPad;
+ 
+ var cache = [
+END SNAPSHOT"
+`;
+
+exports[`Test append-patches: 07: patch-package fails when a patch in the sequence is invalid 1`] = `
+"SNAPSHOT: patch-package fails when a patch in the sequence is invalid
+Failed to apply patch left-pad+1.3.0+001+FirstPatch.patch to left-pad
+END SNAPSHOT"
+`;

integration-tests/append-patches/append-patches.sh

@@ -0,0 +1,74 @@
+# make sure errors stop the script
+set -e
+
+npm install
+
+echo "add patch-package"
+npm add $1
+alias patch-package=./node_modules/.bin/patch-package
+
+function replace() {
+  npx replace "$1" "$2" node_modules/left-pad/index.js
+}
+
+echo "making an initial patch file does not add a sequence number to the file by default"
+replace 'use strict' 'use patch-package'
+
+patch-package left-pad
+
+echo "SNAPSHOT: basic patch file"
+ls patches
+echo "END SNAPSHOT"
+
+echo "using --apend creates a patch file with a sequence number and updates the original patch file"
+
+replace 'use patch-package' 'use a million dollars'
+
+patch-package left-pad --append 'MillionDollars'
+
+echo "SNAPSHOT: after appending a patch file"
+ls patches
+echo "END SNAPSHOT"
+
+echo "SNAPSHOT: the second patch file should go from patch-package to a million dollars"
+cat patches/left-pad*MillionDollars.patch
+echo "END SNAPSHOT"
+
+echo "we can squash the patches together by deleting the patch files"
+rm patches/left-pad*patch
+
+patch-package left-pad --append 'FirstPatch'
+
+echo "SNAPSHOT: creating a first patch file with --append"
+ls patches
+echo "END SNAPSHOT"
+
+echo "SNAPSHOT: the squashed patch file should go from use strict to a million dollars"
+cat patches/left-pad*FirstPatch.patch
+echo "END SNAPSHOT"
+
+echo "i can update an appended patch file"
+
+replace 'use a million dollars' 'use a billion dollars'
+
+patch-package left-pad --append 'BillionDollars'
+
+echo "SNAPSHOT: after appending a billion dollars"
+ls patches
+echo "END SNAPSHOT"
+
+replace 'use a billion dollars' 'use a trillion dollars'
+patch-package left-pad 
+
+echo "SNAPSHOT: after updating the appended patch file to a TRILLION dollars"
+cat patches/left-pad*BillionDollars.patch
+echo "END SNAPSHOT"
+
+echo "if one of the patches in the sequence is invalid, the sequence is not applied"
+npx replace 'use strict' 'use bananas'  patches/*FirstPatch.patch
+
+(>&2 echo "SNAPSHOT: patch-package fails when a patch in the sequence is invalid")
+if patch-package left-pad --append 'Bananas' ; then
+  exit 1
+fi
+(>&2 echo "END SNAPSHOT")

integration-tests/append-patches/append-patches.test.ts

@@ -0,0 +1,5 @@
+import { runIntegrationTest } from "../runIntegrationTest"
+runIntegrationTest({
+  projectName: "append-patches",
+  shouldProduceSnapshots: true,
+})