package dev.dtrentin.chart.render

import kotlin.test.Test
import kotlin.test.assertNotSame
import kotlin.test.assertSame

class LineSignalRendererTest {

    // T8: Stroke cache reuses same instance across calls with equal strokeWidth.
    @Test fun strokeCache_reusesAcrossCallsForSameWidth() {
        val a = LineSignalRenderer.internalStrokeForWidth(2f)
        val b = LineSignalRenderer.internalStrokeForWidth(2f)
        assertSame(a, b)
    }

    // T8: Different widths get distinct Stroke instances.
    @Test fun strokeCache_distinctInstancesForDifferentWidths() {
        val a = LineSignalRenderer.internalStrokeForWidth(1.5f)
        val b = LineSignalRenderer.internalStrokeForWidth(3f)
        assertNotSame(a, b)
    }
}