add wrappers to utils.sh for setting FTL config & add tests

Signed-off-by: Adam Warner <me@adamwarner.co.uk>

advanced/Scripts/utils.sh

@@ -145,3 +145,26 @@ getFTLPID() {
     FTL_PID=${FTL_PID:=-1}
     echo  "${FTL_PID}"
 }
+
+#######################
+# returns value from FTLs config file using pihole-FTL --config
+#
+# Takes one argument: key
+# Example getFTLConfigValue dns.piholePTR
+#######################
+getFTLConfigValue(){
+  pihole-FTL --config "${1}"
+}
+
+#######################
+# sets value in FTLs config file using pihole-FTL --config
+#
+# Takes two arguments: key and value
+# Example setFTLConfigValue dns.piholePTR PI.HOLE
+#
+# Note, for complex values such as dnsmasq.upstreams, you should wrap the value in single quotes:
+# setFTLConfigValue dnsmasq.upstreams '[ "8.8.8.8" , "8.8.4.4" ]'
+#######################
+setFTLConfigValue(){
+  pihole-FTL --config "${1}" "${2}"
+}

test/test_any_utils.py

@@ -170,3 +170,58 @@ def test_getFTLPIDFile_and_getFTLPID_custom(host):
     )
     expected_stdout = "1234\n"
     assert expected_stdout == output.stdout
+
+
+def test_setFTLConfigValue_getFTLConfigValue(host):
+    """
+    Confirms setFTLConfigValue works
+    Requires FTL to be installed, so we do that first (taken from test_FTL_binary_installed_and_responsive_no_errors)
+    """
+    host.run(
+        """
+    source /opt/pihole/basic-install.sh
+    create_pihole_user
+    funcOutput=$(get_binary_name)
+    echo "new/http" > /etc/pihole/ftlbranch
+    binary="pihole-FTL${funcOutput##*pihole-FTL}"
+    theRest="${funcOutput%pihole-FTL*}"
+    FTLdetect "${binary}" "${theRest}"
+    """
+    )
+
+    output = host.run(
+        """
+    source /opt/pihole/utils.sh
+    setFTLConfigValue "dnsmasq.upstreams" '["1.1.1.1"]'
+    """
+    )
+
+    assert '[ "1.1.1.1" ]' in output.stdout
+
+
+def test_getFTLConfigValue_getFTLConfigValue(host):
+    """
+    Confirms getFTLConfigValue works (also assumes setFTLConfigValue works)
+    Requires FTL to be installed, so we do that first (taken from test_FTL_binary_installed_and_responsive_no_errors)
+    """
+    host.run(
+        """
+    source /opt/pihole/basic-install.sh
+    create_pihole_user
+    funcOutput=$(get_binary_name)
+    echo "new/http" > /etc/pihole/ftlbranch
+    binary="pihole-FTL${funcOutput##*pihole-FTL}"
+    theRest="${funcOutput%pihole-FTL*}"
+    FTLdetect "${binary}" "${theRest}"
+    """
+    )
+
+    output = host.run(
+        """
+    source /opt/pihole/utils.sh
+    setFTLConfigValue "dnsmasq.upstreams" '["9.9.9.9"]' > /dev/null
+    getFTLConfigValue "dnsmasq.upstreams"
+    """
+    )
+
+    assert '[ "9.9.9.9" ]' in output.stdout