more testing
This commit is contained in:
Michael Freno
247
testing/__tests__/image_renderer_test.lua
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247
testing/__tests__/image_renderer_test.lua
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local luaunit = require("testing.luaunit")
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require("testing.loveStub")
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local ImageRenderer = require("modules.ImageRenderer")
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TestImageRenderer = {}
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function TestImageRenderer:setUp()
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-- Create a mock image for testing
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self.mockImage = {
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getDimensions = function()
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return 100, 100
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end,
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}
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end
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-- Unhappy path tests for calculateFit
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function TestImageRenderer:testCalculateFitWithZeroImageWidth()
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luaunit.assertError(function()
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ImageRenderer.calculateFit(0, 100, 200, 200, "fill")
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end)
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end
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function TestImageRenderer:testCalculateFitWithZeroImageHeight()
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luaunit.assertError(function()
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ImageRenderer.calculateFit(100, 0, 200, 200, "fill")
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end)
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end
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function TestImageRenderer:testCalculateFitWithNegativeImageWidth()
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luaunit.assertError(function()
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ImageRenderer.calculateFit(-100, 100, 200, 200, "fill")
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end)
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end
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function TestImageRenderer:testCalculateFitWithNegativeImageHeight()
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luaunit.assertError(function()
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ImageRenderer.calculateFit(100, -100, 200, 200, "fill")
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end)
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end
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function TestImageRenderer:testCalculateFitWithZeroBoundsWidth()
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luaunit.assertError(function()
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ImageRenderer.calculateFit(100, 100, 0, 200, "fill")
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end)
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end
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function TestImageRenderer:testCalculateFitWithZeroBoundsHeight()
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luaunit.assertError(function()
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ImageRenderer.calculateFit(100, 100, 200, 0, "fill")
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end)
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end
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function TestImageRenderer:testCalculateFitWithNegativeBoundsWidth()
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luaunit.assertError(function()
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ImageRenderer.calculateFit(100, 100, -200, 200, "fill")
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end)
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end
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function TestImageRenderer:testCalculateFitWithNegativeBoundsHeight()
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luaunit.assertError(function()
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ImageRenderer.calculateFit(100, 100, 200, -200, "fill")
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end)
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end
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function TestImageRenderer:testCalculateFitWithInvalidFitMode()
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luaunit.assertError(function()
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ImageRenderer.calculateFit(100, 100, 200, 200, "invalid-mode")
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end)
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end
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function TestImageRenderer:testCalculateFitWithNilFitMode()
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-- Should default to "fill"
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local result = ImageRenderer.calculateFit(100, 100, 200, 200, nil)
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luaunit.assertNotNil(result)
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luaunit.assertEquals(result.dw, 200)
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luaunit.assertEquals(result.dh, 200)
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end
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function TestImageRenderer:testCalculateFitFillMode()
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local result = ImageRenderer.calculateFit(100, 100, 200, 200, "fill")
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luaunit.assertEquals(result.scaleX, 2)
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luaunit.assertEquals(result.scaleY, 2)
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end
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function TestImageRenderer:testCalculateFitContainMode()
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local result = ImageRenderer.calculateFit(100, 100, 200, 200, "contain")
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luaunit.assertEquals(result.scaleX, 2)
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luaunit.assertEquals(result.scaleY, 2)
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end
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function TestImageRenderer:testCalculateFitCoverMode()
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local result = ImageRenderer.calculateFit(100, 100, 200, 200, "cover")
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luaunit.assertEquals(result.scaleX, 2)
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luaunit.assertEquals(result.scaleY, 2)
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end
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function TestImageRenderer:testCalculateFitNoneMode()
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local result = ImageRenderer.calculateFit(100, 100, 200, 200, "none")
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luaunit.assertEquals(result.scaleX, 1)
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luaunit.assertEquals(result.scaleY, 1)
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end
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function TestImageRenderer:testCalculateFitScaleDownModeWithLargeImage()
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local result = ImageRenderer.calculateFit(300, 300, 200, 200, "scale-down")
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-- Should behave like contain for larger images
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luaunit.assertNotNil(result)
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end
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function TestImageRenderer:testCalculateFitScaleDownModeWithSmallImage()
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local result = ImageRenderer.calculateFit(50, 50, 200, 200, "scale-down")
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-- Should behave like none for smaller images
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luaunit.assertEquals(result.scaleX, 1)
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luaunit.assertEquals(result.scaleY, 1)
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end
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-- Unhappy path tests for _parsePosition
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function TestImageRenderer:testParsePositionWithNil()
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local x, y = ImageRenderer._parsePosition(nil)
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luaunit.assertEquals(x, 0.5)
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luaunit.assertEquals(y, 0.5)
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end
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function TestImageRenderer:testParsePositionWithEmptyString()
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local x, y = ImageRenderer._parsePosition("")
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luaunit.assertEquals(x, 0.5)
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luaunit.assertEquals(y, 0.5)
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end
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function TestImageRenderer:testParsePositionWithInvalidType()
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local x, y = ImageRenderer._parsePosition(123)
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luaunit.assertEquals(x, 0.5)
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luaunit.assertEquals(y, 0.5)
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end
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function TestImageRenderer:testParsePositionWithInvalidKeyword()
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local x, y = ImageRenderer._parsePosition("invalid keyword")
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-- Should default to center
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luaunit.assertEquals(x, 0.5)
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luaunit.assertEquals(y, 0.5)
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end
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function TestImageRenderer:testParsePositionWithMixedValid()
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local x, y = ImageRenderer._parsePosition("left top")
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luaunit.assertEquals(x, 0)
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luaunit.assertEquals(y, 0)
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end
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function TestImageRenderer:testParsePositionWithPercentage()
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local x, y = ImageRenderer._parsePosition("75% 25%")
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luaunit.assertAlmostEquals(x, 0.75, 0.01)
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luaunit.assertAlmostEquals(y, 0.25, 0.01)
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end
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function TestImageRenderer:testParsePositionWithOutOfRangePercentage()
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local x, y = ImageRenderer._parsePosition("150% -50%")
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-- 150% clamps to 1, but -50% doesn't match pattern so defaults to 0.5
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luaunit.assertEquals(x, 1)
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luaunit.assertEquals(y, 0.5)
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end
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function TestImageRenderer:testParsePositionWithSingleValue()
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local x, y = ImageRenderer._parsePosition("left")
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luaunit.assertEquals(x, 0)
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luaunit.assertEquals(y, 0.5) -- Should use center for Y
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end
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function TestImageRenderer:testParsePositionWithSinglePercentage()
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local x, y = ImageRenderer._parsePosition("25%")
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luaunit.assertAlmostEquals(x, 0.25, 0.01)
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luaunit.assertAlmostEquals(y, 0.25, 0.01)
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end
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-- Unhappy path tests for draw
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function TestImageRenderer:testDrawWithNilImage()
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-- Should not crash, just return early
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ImageRenderer.draw(nil, 0, 0, 100, 100, "fill")
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-- If we get here without error, test passes
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luaunit.assertTrue(true)
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end
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function TestImageRenderer:testDrawWithZeroWidth()
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-- Should error in calculateFit
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luaunit.assertError(function()
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ImageRenderer.draw(self.mockImage, 0, 0, 0, 100, "fill")
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end)
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end
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function TestImageRenderer:testDrawWithZeroHeight()
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luaunit.assertError(function()
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ImageRenderer.draw(self.mockImage, 0, 0, 100, 0, "fill")
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end)
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end
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function TestImageRenderer:testDrawWithNegativeOpacity()
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-- Should work but render with negative opacity
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ImageRenderer.draw(self.mockImage, 0, 0, 100, 100, "fill", "center center", -0.5)
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luaunit.assertTrue(true)
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end
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function TestImageRenderer:testDrawWithOpacityGreaterThanOne()
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-- Should work but render with >1 opacity
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ImageRenderer.draw(self.mockImage, 0, 0, 100, 100, "fill", "center center", 2.0)
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luaunit.assertTrue(true)
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end
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function TestImageRenderer:testDrawWithInvalidFitMode()
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luaunit.assertError(function()
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ImageRenderer.draw(self.mockImage, 0, 0, 100, 100, "invalid")
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end)
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end
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function TestImageRenderer:testCalculateFitWithVerySmallBounds()
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local result = ImageRenderer.calculateFit(1000, 1000, 1, 1, "contain")
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luaunit.assertNotNil(result)
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-- Scale should be very small
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luaunit.assertTrue(result.scaleX < 0.01)
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end
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function TestImageRenderer:testCalculateFitWithVeryLargeBounds()
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local result = ImageRenderer.calculateFit(10, 10, 10000, 10000, "contain")
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luaunit.assertNotNil(result)
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-- Scale should be very large
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luaunit.assertTrue(result.scaleX > 100)
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end
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function TestImageRenderer:testCalculateFitWithAspectRatioMismatch()
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-- Wide image, tall bounds
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local result = ImageRenderer.calculateFit(200, 100, 100, 200, "contain")
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luaunit.assertNotNil(result)
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-- Should maintain aspect ratio
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luaunit.assertEquals(result.scaleX, result.scaleY)
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end
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function TestImageRenderer:testCalculateFitCoverWithAspectRatioMismatch()
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-- Wide image, tall bounds
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local result = ImageRenderer.calculateFit(200, 100, 100, 200, "cover")
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luaunit.assertNotNil(result)
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luaunit.assertEquals(result.scaleX, result.scaleY)
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end
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if not _G.RUNNING_ALL_TESTS then
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os.exit(luaunit.LuaUnit.run())
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end
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