chore: refactor how coverage data is created.

Remove github actions which commit a badge to the repo and
move all coverage bits internal to the repo

.github/workflows/go.yml

@@ -9,45 +9,35 @@ on:
 jobs:
   build:
     strategy:
+      fail-fast: true
       matrix:
-        go: ["1.19", "1.20", "1.18"]
+        go: ["1.21", "1.20", "1.19"]
         platform: [ubuntu-latest] # can not run in windows OS
     runs-on: ${{ matrix.platform }}
+
     steps:
-      - uses: actions/checkout@v2
+      - name: Set up Go 1.x
+        uses: actions/setup-go@v4
+        with:
+          go-version: ${{ matrix.go }}
 
-      - name: Set up Go
-        uses: actions/setup-go@v2
+      - name: Check out code into the Go module directory
+        uses: actions/checkout@v4
+
+      - name: go mod package cache
+        uses: actions/cache@v3
         with:
-          go-version: 1.18
+          path: ~/go/pkg/mod
+          key: ${{ runner.os }}-go-${{ matrix.go }}-${{ hashFiles('tests/go.mod') }}
 
       - name: Build
         run: go build -v ./...
 
       - name: Test
         run: |
-          go test -v -cover ./... -coverprofile coverage.out -coverpkg ./...
-          go tool cover -func coverage.out -o coverage.out  # Replaces coverage.out with the analysis of coverage.out
-
-      - name: Go Coverage Badge
-        if: matrix.platform == '1.20'
-        uses: tj-actions/coverage-badge-go@v1
-        with:
-          green: 80
-          filename: coverage.out
+          go test ./...
 
-      - uses: stefanzweifel/git-auto-commit-action@v4
-        if: matrix.platform == '1.20'
-        id: auto-commit-action
-        with:
-          commit_message: Apply Code Coverage Badge
-          skip_fetch: true
-          skip_checkout: true
-          file_pattern: ./README.md
-
-      - name: Push Changes
-        if: steps.auto-commit-action.outputs.changes_detected == 'true' && matrix.platform == '1.20'
-        uses: ad-m/github-push-action@master
-        with:
-          github_token: ${{ github.token }}
-          branch: ${{ github.ref }}
+      - name: Coverage
+        if: ${{ matrix.go != '1.19' }}
+        run: |
+          make coverage-diff

Makefile

@@ -13,4 +13,22 @@ tools:
 
 .PHONY: fmt
 fmt:
-	gofumpt -w $$(find . -name '*.go')
+	gofumpt -w $$(find . -name '*.go')
+
+# coverage-diff will run a new coverage report and check coverage.log to see if
+# the coverage has changed.  
+.PHONY: coverage-diff
+coverage-diff: 
+	cd coverage && \
+	./coverage.sh && \
+	./cov-diff.sh coverage.log && \
+	if ./cov-diff.sh ./coverage.log; then git restore coverage.log; fi
+
+# coverage will generate a report, badge and log.  when you make changes, run
+# this and check in the changes to publish a new/latest coverage report and
+# badge. 
+.PHONY: coverage
+coverage: 
+	cd coverage && \
+	./coverage.sh && \
+	if ./cov-diff.sh ./coverage.log; then git restore coverage.log; fi

README.md

@@ -1,6 +1,6 @@
 # gldap
 [![Go Reference](https://pkg.go.dev/badge/github.com/jimlambrt/gldap/gldap.svg)](https://pkg.go.dev/github.com/jimlambrt/gldap)
-![Coverage](https://img.shields.io/badge/Coverage-88.6%25-brightgreen)
+[![Go Coverage](https://raw.githack.com/jimlambrt/gldap/main/coverage/coverage.svg)](https://raw.githack.com/jimlambrt/gldap/main/coverage/coverage.html)
 [![Go Report Card](https://goreportcard.com/badge/github.com/jimlambrt/gldap)](https://goreportcard.com/report/github.com/jimlambrt/gldap)
 
 <hr>

coverage/cov-diff.sh

@@ -0,0 +1,23 @@
+#!/bin/bash
+
+# Check if the file exists
+if [ ! -f "$1" ]; then
+    echo "File not found!"
+    exit 1
+fi
+
+# Read the last two lines of the file and extract the last columns
+last_col_last_line=$(tail -n 1 "$1" | awk -F',' '{print $NF}')
+last_col_second_last_line=$(tail -n 2 "$1" | head -n 1 | awk -F',' '{print $NF}')
+
+# Compare the last columns
+if [ "$last_col_last_line" = "$last_col_second_last_line" ]; then
+    exit 0
+else
+    echo "coverage has changed."
+    echo "generate a new report and badge using: make coverage"
+    echo "and then check-in the new report and badge?"
+    echo "coverage before: $last_col_second_last_line"
+    echo "coverage now: $last_col_last_line"
+    exit 1
+fi