Merge "Add unit tests for TurbulenceNoiseShader setters" into main

 */

package com.android.systemui.surfaceeffects.turbulencenoise

import android.graphics.Color

import androidx.test.ext.junit.runners.AndroidJUnit4

import androidx.test.filters.SmallTest

import com.android.systemui.SysuiTestCase

import com.android.systemui.surfaceeffects.turbulencenoise.TurbulenceNoiseShader.Companion.Type.SIMPLEX_NOISE_FRACTAL

import com.android.systemui.surfaceeffects.turbulencenoise.TurbulenceNoiseShader.Companion.Type.SIMPLEX_NOISE_SIMPLE

import com.android.systemui.surfaceeffects.turbulencenoise.TurbulenceNoiseShader.Companion.Type.SIMPLEX_NOISE_SPARKLE

import com.google.common.truth.Truth.assertThat

import org.junit.Test

import org.junit.runner.RunWith

    fun compilesSparkleNoise() {

        TurbulenceNoiseShader(baseType = SIMPLEX_NOISE_SPARKLE)

    }

    @Test

    fun simplexSimpleShader_settersDoNotCrash() {

        // Verifies that setting uniforms on the SIMPLEX_NOISE_SIMPLE shader does not crash.

        // This is important as the shader code was modified to use the in_opacity uniform.

        val shader = TurbulenceNoiseShader(baseType = SIMPLEX_NOISE_SIMPLE)

        // Set opacity and other uniforms to ensure the shader's public API is stable.

        shader.setOpacity(0.5f)

        shader.setColor(Color.RED)

        shader.setScreenColor(Color.BLUE)

        shader.setSize(100f, 200f)

        shader.setNoiseMove(0.1f, 0.2f, 0.3f)

        shader.setBackgroundColor(Color.BLACK)

        shader.setGridCount(2.0f)

        shader.setPixelDensity(1.5f)

        shader.setLumaMatteFactors(0.8f, 0.2f)

        shader.setInverseNoiseLuminosity(true)

        // Verify noise offsets are updated correctly as they are the only public state.

        assertThat(shader.noiseOffsetX).isEqualTo(0.1f)

        assertThat(shader.noiseOffsetY).isEqualTo(0.2f)

        assertThat(shader.noiseOffsetZ).isEqualTo(0.3f)

    }

    @Test

    fun applyConfig_setsAllUniforms() {

        // Verifies that the applyConfig convenience method correctly sets all relevant properties

        // and does not crash.

        val shader = TurbulenceNoiseShader(baseType = SIMPLEX_NOISE_SIMPLE)

        val config =

            TurbulenceNoiseAnimationConfig(

                width = 200f,

                height = 300f,

                color = Color.GREEN,

                screenColor = Color.YELLOW,

                pixelDensity = 2.5f,

                gridCount = 2f,

                lumaMatteBlendFactor = 0.5f,

                lumaMatteOverallBrightness = 0.2f,

                shouldInverseNoiseLuminosity = true,

                noiseOffsetX = 1f,

                noiseOffsetY = 2f,

                noiseOffsetZ = 3f

            )

        shader.applyConfig(config)

        // Only noise offsets are publicly readable, so we can verify them.

        // The other setters are verified implicitly by not crashing.

        assertThat(shader.noiseOffsetX).isEqualTo(1f)

        assertThat(shader.noiseOffsetY).isEqualTo(2f)

        assertThat(shader.noiseOffsetZ).isEqualTo(3f)

    }

}