1 files changed, 223 insertions, 0 deletions
diff --git a/tests/Generating/BasicGeneratorTest.cpp b/tests/Generating/BasicGeneratorTest.cpp
new file mode 100644
index 000000000..0f807038c
--- /dev/null
+++ b/tests/Generating/BasicGeneratorTest.cpp
@@ -0,0 +1,223 @@
+#include "Globals.h"
+#include "Generating/ChunkGenerator.h"
+#include "Generating/ChunkDesc.h"
+#include "../TestHelpers.h"
+#include "IniFile.h"
+
+
+
+
+
+/** Checks that the chunk's heightmap corresponds to the chunk contents. */
+static void verifyChunkDescHeightmap(const cChunkDesc & a_ChunkDesc)
+{
+	for (int x = 0; x < cChunkDef::Width; x++)
+	{
+		for (int z = 0; z < cChunkDef::Width; z++)
+		{
+			for (int y = cChunkDef::Height - 1; y > 0; y--)
+			{
+				BLOCKTYPE BlockType = a_ChunkDesc.GetBlockType(x, y, z);
+				if (BlockType != E_BLOCK_AIR)
+				{
+					int Height = a_ChunkDesc.GetHeight(x, z);
+					TEST_EQUAL_MSG(Height, y, Printf("Chunk height at <%d, %d>: exp %d, got %d", x, z, y, Height));
+					break;
+				}
+			}  // for y
+		}  // for z
+	}  // for x
+}
+
+
+
+
+
+/** Prints out the entire column from the chunk, one block type per line. */
+static void printChunkColumn(const cChunkDesc & a_ChunkDesc, int a_X, int a_Z)
+{
+	auto prevBlockType = a_ChunkDesc.GetBlockType(a_X, cChunkDef::Height - 1, a_Z);
+	int count = 1;
+	LOG("Column {%d, %d}:", a_X, a_Z);
+	LOG("Yfrom\tYto\tcnt\ttype\ttypeStr");
+	for (int y = cChunkDef::Height - 2; y >= 0; --y)
+	{
+		auto blockType = a_ChunkDesc.GetBlockType(a_X, y, a_Z);
+		if (blockType != prevBlockType)
+		{
+			LOG("%d\t%d\t%d\t%d\t%s", y + 1, y + count, count, prevBlockType, ItemTypeToString(prevBlockType));
+			prevBlockType = blockType;
+			count = 1;
+		}
+		else
+		{
+			count += 1;
+		}
+	}
+	LOG("%d\t%d\t%d\t%s", 0, count, prevBlockType, ItemTypeToString(prevBlockType));
+}
+
+
+
+
+
+/** Tests that the default Overworld generator generates a few chunks that have the Overworld look:
+- bedrock at their bottom
+- a valid overworld block at their height's top
+- air at their top, unless the height at that point is equal to full chunk height.
+- valid heightmap
+Multiple chunks are tested. */
+static void testGenerateOverworld()
+{
+	LOG("Testing Overworld generator...");
+
+	// Create a default Overworld generator:
+	cIniFile ini;
+	ini.AddValue("General", "Dimension", "Overworld");
+	ini.AddValueI("Seed", "Seed", 1);
+	ini.AddValue("Generator", "Finishers", "");  // Use no finishers, so that we don't have to check too many blocktypes
+	auto gen = cChunkGenerator::CreateFromIniFile(ini);
+	TEST_NOTEQUAL(gen, nullptr);
+
+	for (int chunkX = 0; chunkX < 50; ++chunkX)
+	{
+		// Generate a chunk:
+		cChunkDesc chd({chunkX, 0});
+		gen->Generate(chunkX, 0, chd);
+		verifyChunkDescHeightmap(chd);
+
+		// Check that it has bedrock at the bottom:
+		for (int x = 0; x < cChunkDef::Width; ++x)
+		{
+			for (int z = 0; z < cChunkDef::Width; ++z)
+			{
+				TEST_EQUAL_MSG(chd.GetBlockType(x, 0, z), E_BLOCK_BEDROCK, Printf("Bedrock floor at {%d, 0, %d}", x, z));
+			}
+		}
+
+		// Check that the blocks on the top are valid Overworld blocks:
+		static std::set<BLOCKTYPE> validOverworldBlockTypes =
+		{
+			E_BLOCK_STONE,
+			E_BLOCK_GRASS,
+			E_BLOCK_WATER,
+			E_BLOCK_STATIONARY_WATER,
+			E_BLOCK_LAVA,
+			E_BLOCK_STATIONARY_LAVA,
+			E_BLOCK_SAND,
+			E_BLOCK_GRAVEL,
+			E_BLOCK_LEAVES,
+			E_BLOCK_NEW_LEAVES,
+		};
+		for (int x = 0; x < cChunkDef::Width; ++x)
+		{
+			for (int z = 0; z < cChunkDef::Width; ++z)
+			{
+				auto y = chd.GetHeight(x, z);
+				auto blockType = chd.GetBlockType(x, y, z);
+				TEST_EQUAL_MSG(validOverworldBlockTypes.count(blockType), 1,
+					Printf("Block at {%d, %d, %d}: %d", x, y, z, blockType)
+				);
+				if (y < cChunkDef::Height - 1)
+				{
+					TEST_EQUAL_MSG(chd.GetBlockType(x, cChunkDef::Height - 1, z), E_BLOCK_AIR,
+						Printf("Air at {%d, %d, %d}", x, cChunkDef::Height - 1, z)
+					);
+				}
+			}
+		}
+	}
+}
+
+
+
+
+
+/** Tests that the default Nether generator generates a chunk that has the Nether look:
+- bedrock at the bottom
+- bedrock at the height's top
+- netherrack, lava or soulsand anywhere in the middle
+- valid heightmap
+Multiple chunks are tested. */
+static void testGenerateNether()
+{
+	LOG("Testing Nether generator...");
+
+	// Create a default Nether generator:
+	cIniFile ini;
+	ini.AddValue("General", "Dimension", "Nether");
+	ini.AddValueI("Seed", "Seed", 1);
+	auto gen = cChunkGenerator::CreateFromIniFile(ini);
+	TEST_NOTEQUAL(gen, nullptr);
+
+	for (int chunkX = 0; chunkX < 50; ++chunkX)
+	{
+		// Generate a chunk:
+		cChunkDesc chd({chunkX, 0});
+		gen->Generate(chunkX, 0, chd);
+		verifyChunkDescHeightmap(chd);
+
+		// Check that the biome is Nether everywhere:
+		for (int x = 0; x < cChunkDef::Width; ++x)
+		{
+			for (int z = 0; z < cChunkDef::Width; ++z)
+			{
+				TEST_EQUAL_MSG(chd.GetBiome(x, z), biNether, Printf("Nether biome at {%d, %d}", x, z));
+			}
+		}
+
+		// Check that it has bedrock at the bottom and height:
+		int prevHeight = chd.GetHeight(0, 0);
+		for (int x = 0; x < cChunkDef::Width; ++x)
+		{
+			for (int z = 0; z < cChunkDef::Width; ++z)
+			{
+				TEST_EQUAL_MSG(chd.GetBlockType(x, 0, z), E_BLOCK_BEDROCK, Printf("Bedrock floor at {%d, 0, %d}", x, z));
+				auto y = chd.GetHeight(x, z);
+				TEST_EQUAL(y, prevHeight);  // Same height across the entire chunk
+				auto blockType = chd.GetBlockType(x, y, z);
+				TEST_EQUAL_MSG(blockType, E_BLOCK_BEDROCK,
+					Printf("Bedrock ceiling at {%d, %d, %d}: %d", x, y, z, blockType)
+				);
+			}
+		}
+
+		// Check that the blocks on the top are valid Overworld blocks:
+		for (int x = 0; x < cChunkDef::Width; ++x)
+		{
+			for (int z = 0; z < cChunkDef::Width; ++z)
+			{
+				bool hasSuitableBlockType = false;
+				for (int y = chd.GetHeight(x, z); y > 0; --y)
+				{
+					switch (chd.GetBlockType(x, y, z))
+					{
+						case E_BLOCK_NETHERRACK:
+						case E_BLOCK_NETHER_QUARTZ_ORE:
+						case E_BLOCK_LAVA:
+						case E_BLOCK_STATIONARY_LAVA:
+						case E_BLOCK_SOULSAND:
+						{
+							hasSuitableBlockType = true;
+							break;
+						}
+					}
+				}  // for y
+				if (!hasSuitableBlockType)
+				{
+					printChunkColumn(chd, x, z);
+					TEST_FAIL(Printf("!hasSuitableBlockType at column {%d, %d} of chunk [%d, 0]", x, z, chunkX));
+				}
+			}
+		}
+	}
+}
+
+
+
+
+
+IMPLEMENT_TEST_MAIN("BasicGeneratorTest",
+	testGenerateOverworld();
+	testGenerateNether();
+)