From 9ceeb235fd3ff25b90fa5ff2e3f4de3ef62e10e0 Mon Sep 17 00:00:00 2001
From: epolon <epolon@amazon.com>
Date: Thu, 12 Mar 2020 14:12:34 +0200
Subject: [PATCH 1/4] support exempting readme changes from pr based on a label

---
 tools/prlint/index.js | 19 ++++++++++++++-----
 1 file changed, 14 insertions(+), 5 deletions(-)

diff --git a/tools/prlint/index.js b/tools/prlint/index.js
index 7e4212d1ef9ea..66c6989801ef3 100755
--- a/tools/prlint/index.js
+++ b/tools/prlint/index.js
@@ -18,7 +18,7 @@ function createGitHubClient() {
     } else {
         console.log("Creating un-authenticated GitHub Client")
     }
-    
+
     return new GitHub({'token': token});
 }
 
@@ -60,6 +60,12 @@ function fixContainsTest(issue, files) {
     };
 };
 
+function shouldExemptReadme(issue) {
+    return issue.labels.some(function (l) {
+        return l.name === 'pr-linter/exempt-readme';
+    })
+}
+
 async function mandatoryChanges(number) {
 
     if (!number) {
@@ -67,10 +73,10 @@ async function mandatoryChanges(number) {
     }
 
     const gh = createGitHubClient();
-    
+
     const issues = gh.getIssues(OWNER, REPO);
     const repo = gh.getRepo(OWNER, REPO);
-    
+
     console.log(`⌛  Fetching PR number ${number}`)
     const issue = (await issues.getIssue(number)).data;
 
@@ -79,12 +85,15 @@ async function mandatoryChanges(number) {
 
     console.log("⌛  Validating...");
 
-    featureContainsReadme(issue, files);
+    if (!shouldExemptReadme(issue)) {
+        featureContainsReadme(issue, files);
+    }
+
     featureContainsTest(issue, files);
     fixContainsTest(issue, files);
 
     console.log("✅  Success")
-        
+
 }
 
 // we don't use the 'export' prefix because github actions

From 0ab67ac316f96fee0b6cfecc89f399be0de76a2d Mon Sep 17 00:00:00 2001
From: epolon <epolon@amazon.com>
Date: Thu, 12 Mar 2020 14:20:36 +0200
Subject: [PATCH 2/4] added test exemption as well

---
 tools/prlint/index.js | 16 +++++++++++++---
 1 file changed, 13 insertions(+), 3 deletions(-)

diff --git a/tools/prlint/index.js b/tools/prlint/index.js
index 66c6989801ef3..d8e0f86c972fc 100755
--- a/tools/prlint/index.js
+++ b/tools/prlint/index.js
@@ -61,8 +61,16 @@ function fixContainsTest(issue, files) {
 };
 
 function shouldExemptReadme(issue) {
+    return hasLabel(issue, 'pr-linter/exempt-readme');
+}
+
+function shouldExemptTest(issue) {
+    return hasLabel(issue, 'pr-linter/exempt-test');
+}
+
+function hasLabel(issue, labelName) {
     return issue.labels.some(function (l) {
-        return l.name === 'pr-linter/exempt-readme';
+        return l.name === labelName;
     })
 }
 
@@ -89,8 +97,10 @@ async function mandatoryChanges(number) {
         featureContainsReadme(issue, files);
     }
 
-    featureContainsTest(issue, files);
-    fixContainsTest(issue, files);
+    if (!shouldExemptTest(issue)) {
+        featureContainsTest(issue, files);
+        fixContainsTest(issue, files);
+    }
 
     console.log("✅  Success")
 

From 043a05a52609aa0a86addd1ba44ca9c3ceac3270 Mon Sep 17 00:00:00 2001
From: epolon <epolon@amazon.com>
Date: Thu, 12 Mar 2020 14:46:16 +0200
Subject: [PATCH 3/4] add logs when exempting PR's

---
 tools/prlint/index.js | 14 ++++++++++----
 1 file changed, 10 insertions(+), 4 deletions(-)

diff --git a/tools/prlint/index.js b/tools/prlint/index.js
index d8e0f86c972fc..6d9a1c3c42779 100755
--- a/tools/prlint/index.js
+++ b/tools/prlint/index.js
@@ -3,6 +3,8 @@ const GitHub = require("github-api")
 
 const OWNER = "aws"
 const REPO = "aws-cdk"
+const EXEMPT_README = 'pr-linter/exempt-readme'
+const EXEMPT_TEST = 'pr-linter/exempt-test'
 
 class LinterError extends Error {
     constructor(message) {
@@ -61,11 +63,11 @@ function fixContainsTest(issue, files) {
 };
 
 function shouldExemptReadme(issue) {
-    return hasLabel(issue, 'pr-linter/exempt-readme');
+    return hasLabel(issue, EXEMPT_README);
 }
 
 function shouldExemptTest(issue) {
-    return hasLabel(issue, 'pr-linter/exempt-test');
+    return hasLabel(issue, EXEMPT_TEST);
 }
 
 function hasLabel(issue, labelName) {
@@ -93,11 +95,15 @@ async function mandatoryChanges(number) {
 
     console.log("⌛  Validating...");
 
-    if (!shouldExemptReadme(issue)) {
+    if (shouldExemptReadme(issue)) {
+        console.log(`Not validating README changes since the PR is labeled with '${EXEMPT_README}'`)
+    } else {
         featureContainsReadme(issue, files);
     }
 
-    if (!shouldExemptTest(issue)) {
+    if (shouldExemptTest(issue)) {
+        console.log(`Not validating test changes since the PR is labeled with '${EXEMPT_TEST}'`)
+    } else {
         featureContainsTest(issue, files);
         fixContainsTest(issue, files);
     }

From 3ebf5f24a6971a4705d83610f0389ac1655542ef Mon Sep 17 00:00:00 2001
From: epolon <epolon@amazon.com>
Date: Thu, 12 Mar 2020 16:37:45 +0200
Subject: [PATCH 4/4] dummy to trigger build

---
 tools/prlint/README.md | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/tools/prlint/README.md b/tools/prlint/README.md
index 085bc115dc691..b38d330d4ebd9 100644
--- a/tools/prlint/README.md
+++ b/tools/prlint/README.md
@@ -1,6 +1,6 @@
 # prlint (beta)
 
-A linter that can run various checks to validate a PR adheres to our standards. 
+A linter that can run various checks to validate a PR adheres to our standards.
 
 ### Disclaimer
 
@@ -41,3 +41,4 @@ Error: Features must contain a change to a README file
 ```
 
 Note that an **un-authenticated** GitHub client is created, unless you set the `GITHUB_TOKEN` env variable.
+