ci: Add erase-region, hold-in-reset, reset and checksum-md5 tests

Author: SergioGasquez

.github/workflows/hil.yml

@@ -155,3 +155,56 @@ jobs:
           if ! echo "$result" | grep -q "Hello world!"; then
             exit 1
           fi
+
+      - name: erase-region test
+        run: |
+          result=$(espflash_app/espflash erase-region 0x1000 0x1000 2>&1)
+          echo "$result"
+          if [[ ! $result =~ "Erasing region at" ]]; then
+            exit 1
+          fi
+          result=$(espflash_app/espflash read-flash  0x1000 0x2000 flash_content.bin 2>&1)
+          echo "$result"
+          if [[ ! $result =~ "Flash content successfully read and written to" ]]; then
+            exit 1
+          fi
+          # Check first 0x1000 bytes are FF
+          if head -c 4096 flash_content.bin | hexdump -v -e '/1 "%02x"' | grep -qv '^ff*$'; then
+            echo "First 0x1000 bytes should be empty (FF)"
+            exit 1
+          fi
+          # Check next 0x1000 bytes contain some non-FF bytes
+          if ! tail -c 4096 flash_content.bin | hexdump -v -e '/1 "%02x"' | grep -q '[0-e]'; then
+            echo "Next 0x1000 bytes should contain some non-FF bytes"
+            exit 1
+          fi
+          echo "Flash contents verified!"
+
+      - name: hold-in-reset test
+        run: |
+          result=$(espflash_app/espflash hold-in-reset 2>&1)
+          echo "$result"
+          if [[ ! $result =~ "Holding target device in reset" ]]; then
+            exit 1
+          fi
+
+      - name: reset test
+        run: |
+          result=$(espflash_app/espflash reset 2>&1)
+          echo "$result"
+          if [[ ! $result =~ "Resetting target device" ]]; then
+            exit 1
+          fi
+
+      - name: checksum-md5 test
+        run: |
+          result=$(espflash_app/espflash erase-flash 2>&1)
+          echo "$result"
+          if [[ ! $result =~ "Flash has been erased!" ]]; then
+            exit 1
+          fi
+          result=$(espflash_app/espflash checksum-md5 --address 0x1000 --length 0x100 2>&1)
+          echo "$result"
+          if [[ ! $result =~ "0x827f263ef9fb63d05499d14fcef32f60" ]]; then
+            exit 1
+          fi