56 lines
1.5 KiB
C++
56 lines
1.5 KiB
C++
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#include <Bmp.h>
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#include <stdexcept>
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#include "Catch2.h"
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using namespace Leonetienne::BmpPP;
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using namespace Eule;
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// Don't have to test operator not equal, because it just returns the opposite of this
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// Tests that two RGB images containing almost every possible color are equal, after being copied
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TEST_CASE(__FILE__"/CopiedImagesAreEqual", "[OperatorEqual]")
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{
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// Read a gradient image
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BMP bmp_a("base_gradient.bmp");
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// Copy it
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BMP bmp_b = bmp_a;
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// Assert that they are equal
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REQUIRE(bmp_a == bmp_b);
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return;
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}
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// Tests that changing a single pixel channel results in them not being equal anymore
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TEST_CASE(__FILE__"/OneDifferingValueMakesUnequal", "[OperatorEqual]")
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{
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// Read a gradient image
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BMP bmp_a("base_gradient.bmp");
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// Copy it
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BMP bmp_b = bmp_a;
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// Bop it
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*(bmp_a.GetPixel(bmp_a.GetDimensions() / 2) + 1) = 69;
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// Assert that they are equal
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REQUIRE_FALSE(bmp_a == bmp_b);
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return;
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}
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// Tests that two images with the exact same pixelbuffer, but differing metadata are not equal
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TEST_CASE(__FILE__"/SamePixelbufferButDifferentMetadataUnequal", "[OperatorEqual]")
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{
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// Create image a
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BMP bmp_a(Vector2i(800, 600), Colormode::RGB); // 1440000 values of 0
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// Create image b
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BMP bmp_b(Vector2i(600, 600), Colormode::RGBA); // Also 1440000 values of 0
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bmp_b.FillChannel(3, 0); // Make sure the alpha channel actually is zeroed
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// They only differ by their metadata. Not by pixel data. Make sure they are not euqal.
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REQUIRE_FALSE(bmp_a == bmp_b);
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return;
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}
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