68 lines
1.8 KiB
Kotlin
68 lines
1.8 KiB
Kotlin
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package com.mindmachine.mvp
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import com.mindmachine.mvp.domain.VisualPattern
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import com.mindmachine.mvp.session.computeVisualAlpha
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import org.junit.Assert.assertEquals
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import org.junit.Assert.assertTrue
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import org.junit.Test
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class VisualSignalTest {
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@Test
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fun flashPatternAlternatesBetweenIntensityAndOff() {
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val intensity = 70
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val hz = 10f
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val on = computeVisualAlpha(
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visualPattern = VisualPattern.FLASH,
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frameTimeNanos = 0L,
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blinkFrequencyHz = hz,
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intensityPercent = intensity
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)
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val off = computeVisualAlpha(
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visualPattern = VisualPattern.FLASH,
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frameTimeNanos = 75_000_000L,
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blinkFrequencyHz = hz,
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intensityPercent = intensity
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)
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assertEquals(0.7f, on, 0.0001f)
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assertEquals(0f, off, 0.0001f)
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}
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@Test
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fun pulsePatternStaysWithinZeroAndIntensity() {
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val intensity = 60
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val atStart = computeVisualAlpha(
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visualPattern = VisualPattern.PULSE,
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frameTimeNanos = 0L,
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blinkFrequencyHz = 3f,
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intensityPercent = intensity
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)
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val quarterCycle = computeVisualAlpha(
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visualPattern = VisualPattern.PULSE,
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frameTimeNanos = 83_333_333L,
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blinkFrequencyHz = 3f,
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intensityPercent = intensity
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)
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assertTrue(atStart in 0f..0.6f)
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assertTrue(quarterCycle in 0f..0.6f)
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assertTrue(quarterCycle > atStart)
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}
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@Test
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fun intensityZeroAlwaysReturnsZero() {
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val alpha = computeVisualAlpha(
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visualPattern = VisualPattern.FLASH,
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frameTimeNanos = 123_000_000L,
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blinkFrequencyHz = 8f,
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intensityPercent = 0
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)
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assertEquals(0f, alpha, 0f)
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}
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}
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