Fix a bug with getting the highest bump type

.babelrc

@@ -0,0 +1,3 @@
+{
+  "presets": ["@babel/preset-env", "@babel/preset-typescript"]
+}

__snapshots__/utils.test.ts.snap

@@ -0,0 +1,25 @@
+// Jest Snapshot v1, https://goo.gl/fbAQLP
+
+exports[`it works 1`] = `
+"### Major Changes
+
+-   [2164a779](https://github.com/keystonejs/keystone-5/commit/2164a779):
+
+    -   Replace jade with pug because Jade was renamed to Pug, and \`jade\` package is outdated
+
+### Patch Changes
+
+-   [81dc0be5](https://github.com/keystonejs/keystone-5/commit/81dc0be5):
+
+    -   Update dependencies
+"
+`;
+
+exports[`it works 2`] = `
+"### Patch Changes
+
+-   [19fe6c1b](https://github.com/keystonejs/keystone-5/commit/19fe6c1b):
+
+    Move frontmatter in docs into comments
+"
+`;

index.ts

@@ -2,13 +2,9 @@ import * as core from "@actions/core";
 import { exec } from "@actions/exec";
 import * as github from "@actions/github";
 import fs from "fs-extra";
-import unified from "unified";
-import remarkParse from "remark-parse";
-import remarkStringify from "remark-stringify";
-// @ts-ignore
-import mdastToString from "mdast-util-to-string";
 import getWorkspaces, { Workspace } from "get-workspaces";
 import path from "path";
+import { getChangelogEntry } from "./utils";
 
 async function execWithOutput(
   command: string,
@@ -293,67 +289,3 @@ async function execWithOutput(
   console.error(err);
   core.setFailed(err.message);
 });
-
-enum BumpLevels {
-  dep = 0,
-  patch = 1,
-  minor = 2,
-  major = 3
-}
-
-function getChangelogEntry(changelog: string, version: string) {
-  let ast = unified()
-    .use(remarkParse)
-    .parse(changelog);
-
-  let highestLevel = BumpLevels.dep;
-
-  let nodes = ast.children as Array<any>;
-  let headingStartInfo:
-    | {
-        index: number;
-        depth: number;
-      }
-    | undefined;
-  let endIndex: number | undefined;
-
-  for (let i = 0; i < nodes.length; i++) {
-    let node = nodes[i];
-    if (node.type === "heading") {
-      let stringified: string = mdastToString(node);
-      let match = stringified.toLowerCase().match(/(major|minor|patch)/);
-      if (match !== null) {
-        let level = BumpLevels[match[0] as "major" | "minor" | "patch"];
-        highestLevel = Math.max(level, highestLevel);
-      }
-      if (headingStartInfo === undefined && stringified === version) {
-        headingStartInfo = {
-          index: i,
-          depth: node.depth
-        };
-        continue;
-      }
-    }
-
-    if (
-      endIndex === undefined &&
-      headingStartInfo !== undefined &&
-      node.type === "heading" &&
-      headingStartInfo.depth === node.depth
-    ) {
-      endIndex = i;
-    }
-  }
-  if (headingStartInfo) {
-    ast.children = (ast.children as any).slice(
-      headingStartInfo.index + 1,
-      endIndex
-    );
-  }
-  return {
-    content: unified()
-      .use(remarkStringify)
-      .stringify(ast),
-    highestLevel: highestLevel
-  };
-}

package.json

@@ -16,11 +16,17 @@
     "@actions/github": "^1.0.0",
     "@actions/io": "^1.0.0",
     "@actions/tool-cache": "^1.0.0",
+    "@babel/core": "^7.6.0",
+    "@babel/preset-env": "^7.6.0",
+    "@babel/preset-typescript": "^7.6.0",
     "@types/fs-extra": "^8.0.0",
+    "@types/jest": "^24.0.18",
     "@types/node": "^12.7.1",
+    "babel-jest": "^24.9.0",
     "fs-extra": "^8.1.0",
     "get-workspaces": "^0.4.0",
     "husky": "^3.0.3",
+    "jest": "^24.9.0",
     "mdast-util-to-string": "^1.0.6",
     "remark-parse": "^7.0.1",
     "remark-stringify": "^7.0.3",

utils.test.ts

@@ -0,0 +1,80 @@
+import { getChangelogEntry, BumpLevels } from "./utils";
+
+let changelog = `# @keystone-alpha/email
+
+## 3.0.1
+
+### Patch Changes
+
+- [19fe6c1b](https://github.com/keystonejs/keystone-5/commit/19fe6c1b):
+
+  Move frontmatter in docs into comments
+
+## 3.0.0
+
+### Major Changes
+
+- [2164a779](https://github.com/keystonejs/keystone-5/commit/2164a779):
+
+  - Replace jade with pug because Jade was renamed to Pug, and \`jade\` package is outdated
+
+### Patch Changes
+
+- [81dc0be5](https://github.com/keystonejs/keystone-5/commit/81dc0be5):
+
+  - Update dependencies
+
+## 2.0.0
+
+- [patch][b69fb9b7](https://github.com/keystonejs/keystone-5/commit/b69fb9b7):
+
+  - Update dev devependencies
+
+- [major][f97e4ecf](https://github.com/keystonejs/keystone-5/commit/f97e4ecf):
+
+  - Export { emailSender } as the API, rather than a default export
+
+## 1.0.2
+
+- [patch][7417ea3a](https://github.com/keystonejs/keystone-5/commit/7417ea3a):
+
+  - Update patch-level dependencies
+
+## 1.0.1
+
+- [patch][1f0bc236](https://github.com/keystonejs/keystone-5/commit/1f0bc236):
+
+  - Update the package.json author field to "The Keystone Development Team"
+
+## 1.0.0
+
+- [major] 8b6734ae:
+
+  - This is the first release of keystone-alpha (previously voussoir).
+    All packages in the \`@voussoir\` namespace are now available in the \`@keystone-alpha\` namespace, starting at version \`1.0.0\`.
+    To upgrade your project you must update any \`@voussoir/<foo>\` dependencies in \`package.json\` to point to \`@keystone-alpha/<foo>: "^1.0.0"\` and update any \`require\`/\`import\` statements in your code.
+
+# @voussoir/email
+
+## 0.0.2
+
+- [patch] 113e16d4:
+
+  - Remove unused dependencies
+
+- [patch] 625c1a6d:
+
+  - Update mjml-dependency
+`;
+
+test("it works", () => {
+  let entry = getChangelogEntry(changelog, "3.0.0");
+  expect(entry.content).toMatchSnapshot();
+  expect(entry.highestLevel).toBe(BumpLevels.major);
+});
+
+test("it works", () => {
+  let entry = getChangelogEntry(changelog, "3.0.1");
+  expect(entry.content).toMatchSnapshot();
+  expect(entry.highestLevel).toBe(BumpLevels.patch);
+});

utils.ts

@@ -0,0 +1,68 @@
+import unified from "unified";
+import remarkParse from "remark-parse";
+import remarkStringify from "remark-stringify";
+// @ts-ignore
+import mdastToString from "mdast-util-to-string";
+
+export const BumpLevels = {
+  dep: 0,
+  patch: 1,
+  minor: 2,
+  major: 3
+} as const;
+
+export function getChangelogEntry(changelog: string, version: string) {
+  let ast = unified()
+    .use(remarkParse)
+    .parse(changelog);
+
+  let highestLevel: number = BumpLevels.dep;
+
+  let nodes = ast.children as Array<any>;
+  let headingStartInfo:
+    | {
+        index: number;
+        depth: number;
+      }
+    | undefined;
+  let endIndex: number | undefined;
+
+  for (let i = 0; i < nodes.length; i++) {
+    let node = nodes[i];
+    if (node.type === "heading") {
+      let stringified: string = mdastToString(node);
+      let match = stringified.toLowerCase().match(/(major|minor|patch)/);
+      if (match !== null) {
+        let level = BumpLevels[match[0] as "major" | "minor" | "patch"];
+        highestLevel = Math.max(level, highestLevel);
+      }
+      if (headingStartInfo === undefined && stringified === version) {
+        headingStartInfo = {
+          index: i,
+          depth: node.depth
+        };
+        continue;
+      }
+      if (
+        endIndex === undefined &&
+        headingStartInfo !== undefined &&
+        headingStartInfo.depth === node.depth
+      ) {
+        endIndex = i;
+        break;
+      }
+    }
+  }
+  if (headingStartInfo) {
+    ast.children = (ast.children as any).slice(
+      headingStartInfo.index + 1,
+      endIndex
+    );
+  }
+  return {
+    content: unified()
+      .use(remarkStringify)
+      .stringify(ast),
+    highestLevel: highestLevel
+  };
+}