feat: camper van energy monitoring widget for Plasma 6main

Pure QML KPackage widget with Rust background service for real-time
Victron energy system monitoring via MQTT and D-Bus.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

1 files changed, 76 insertions, 0 deletions

diff --git a/tests/qml/tst_value_formatting.qml b/tests/qml/tst_value_formatting.qml
new file mode 100644
index 0000000..78d39dc
--- /dev/null
+++ b/tests/qml/tst_value_formatting.qml
@@ -0,0 +1,76 @@
+import QtQuick 6.0
+import QtTest 1.0
+import "../../package/contents/ui" as Ui
+
+TestCase {
+    name: "ValueFormatting"
+
+    Ui.FormatUtils { id: fmt }
+
+    // formatSoc
+    function test_soc_normal() {
+        compare(fmt.formatSoc(75.3), "75%")
+    }
+
+    function test_soc_zero() {
+        compare(fmt.formatSoc(0), "0%")
+    }
+
+    function test_soc_full() {
+        compare(fmt.formatSoc(100), "100%")
+    }
+
+    function test_soc_rounds_up() {
+        compare(fmt.formatSoc(49.6), "50%")
+    }
+
+    function test_soc_negative() {
+        compare(fmt.formatSoc(-1), "--")
+    }
+
+    function test_soc_undefined() {
+        compare(fmt.formatSoc(undefined), "--")
+    }
+
+    function test_soc_null() {
+        compare(fmt.formatSoc(null), "--")
+    }
+
+    function test_soc_nan() {
+        compare(fmt.formatSoc(NaN), "--")
+    }
+
+    // formatPower
+    function test_power_connected() {
+        compare(fmt.formatPower(true, 123.7), "124W")
+    }
+
+    function test_power_connected_zero() {
+        compare(fmt.formatPower(true, 0), "0W")
+    }
+
+    function test_power_disconnected() {
+        compare(fmt.formatPower(false, 50), "--")
+    }
+
+    // formatSolar
+    function test_solar_normal() {
+        compare(fmt.formatSolar(200.4), "200W")
+    }
+
+    function test_solar_zero() {
+        compare(fmt.formatSolar(0), "0W")
+    }
+
+    function test_solar_negative() {
+        compare(fmt.formatSolar(-1), "--")
+    }
+
+    function test_solar_undefined() {
+        compare(fmt.formatSolar(undefined), "--")
+    }
+
+    function test_solar_nan() {
+        compare(fmt.formatSolar(NaN), "--")
+    }
+}