k-frame/crates/client-application/tests/conversion_tests.rs

use client_application::conversions::{
    wire_to_display_hint, wire_to_layout, wire_to_value, wire_to_widget_state,
};
use domain::{
    AlignItems, ContainerNode, Direction, DisplayHint, DisplayHintKind, JustifyContent,
    LayoutChild, LayoutNode, Sizing, Value, WidgetError, WidgetState,
};
use protocol::{
    WireContainerNode, WireDirection, WireDisplayHint, WireKeyValue, WireLayoutChild,
    WireLayoutNode, WireSizing, WireValue, WireWidgetError, WireWidgetState,
};
use std::collections::BTreeMap;

fn value_to_wire(v: &Value) -> WireValue {
    match v {
        Value::Null => WireValue::Null,
        Value::Bool(b) => WireValue::Bool(*b),
        Value::Number(n) => WireValue::Number(*n),
        Value::String(s) => WireValue::String(s.clone()),
        Value::Array(arr) => WireValue::Array(arr.iter().map(value_to_wire).collect()),
        Value::Object(map) => WireValue::Object(
            map.iter()
                .map(|(k, v)| (k.clone(), value_to_wire(v)))
                .collect(),
        ),
    }
}

#[test]
fn value_converts_to_wire_and_back() {
    let original = Value::Object(BTreeMap::from([(
        "items".into(),
        Value::Array(vec![
            Value::String("hello".into()),
            Value::Number(42.0),
            Value::Bool(true),
            Value::Null,
        ]),
    )]));

    let wire = value_to_wire(&original);
    let roundtripped = wire_to_value(wire);
    assert_eq!(original, roundtripped);
}

#[test]
fn widget_state_with_error_converts_to_wire_and_back() {
    let original = WidgetState {
        data: BTreeMap::from([("temp".into(), Value::Number(5.4))]),
        error: Some(WidgetError::SourceUnavailable),
    };

    let wire = WireWidgetState {
        data: original
            .data
            .iter()
            .map(|(k, v)| WireKeyValue {
                key: k.clone(),
                value: value_to_wire(v),
            })
            .collect(),
        error: Some(WireWidgetError::SourceUnavailable),
    };
    let roundtripped = wire_to_widget_state(wire);
    assert_eq!(original, roundtripped);
}

#[test]
fn layout_tree_converts_to_wire_and_back() {
    let original = LayoutNode::Container(ContainerNode {
        direction: Direction::Row,
        gap: 4,
        padding: 2,
        justify_content: JustifyContent::Start,
        align_items: AlignItems::Stretch,
        children: vec![
            LayoutChild {
                sizing: Sizing::Flex(1),
                node: LayoutNode::Leaf(1),
            },
            LayoutChild {
                sizing: Sizing::Fixed(100),
                node: LayoutNode::Container(ContainerNode {
                    direction: Direction::Column,
                    gap: 2,
                    padding: 0,
                    justify_content: JustifyContent::Start,
                    align_items: AlignItems::Stretch,
                    children: vec![LayoutChild {
                        sizing: Sizing::Flex(1),
                        node: LayoutNode::Leaf(2),
                    }],
                }),
            },
        ],
    });

    let wire = WireLayoutNode::Container(WireContainerNode {
        direction: WireDirection::Row,
        gap: 4,
        padding: 2,
        justify_content: protocol::WireJustifyContent::Start,
        align_items: protocol::WireAlignItems::Stretch,
        children: vec![
            WireLayoutChild {
                sizing: WireSizing::Flex(1),
                node: WireLayoutNode::Leaf(1),
            },
            WireLayoutChild {
                sizing: WireSizing::Fixed(100),
                node: WireLayoutNode::Container(WireContainerNode {
                    direction: WireDirection::Column,
                    gap: 2,
                    padding: 0,
                    justify_content: protocol::WireJustifyContent::Start,
                    align_items: protocol::WireAlignItems::Stretch,
                    children: vec![WireLayoutChild {
                        sizing: WireSizing::Flex(1),
                        node: WireLayoutNode::Leaf(2),
                    }],
                }),
            },
        ],
    });

    let roundtripped = wire_to_layout(wire);
    assert_eq!(original, roundtripped);
}

#[test]
fn display_hint_converts_to_wire_and_back() {
    for (hint, wire_kind) in [
        (
            DisplayHintKind::IconValue,
            protocol::WireDisplayHintKind::IconValue,
        ),
        (
            DisplayHintKind::TextBlock,
            protocol::WireDisplayHintKind::TextBlock,
        ),
        (
            DisplayHintKind::KeyValue,
            protocol::WireDisplayHintKind::KeyValue,
        ),
    ] {
        let original = DisplayHint::new(hint);
        let wire = WireDisplayHint::new(wire_kind);
        let roundtripped = wire_to_display_hint(wire);
        assert_eq!(original, roundtripped);
    }
}