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86 lines
3.0 KiB
86 lines
3.0 KiB
#include <constants.h>
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#include <bitwise.h>
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#include "catch.hpp"
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/*
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* From (Position): 6 bits (2^6 == 64) possibilities
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* To (Position): same as above
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* Captured piece, if any: 4 bits (16) possibilities
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* Promoted to, if any: 4 bits (16) possibilities
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* en passant flag: 1 bit
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* pawn starting move flag: 1 bit
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* castle move flag: 1 bit
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*
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* (32-bit int, room to exapnd if neccessary)
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* 0000 0000 0000 0000 0000 0000 0011 1111 -> From square position (& 0x3F)
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* 0000 0000 0000 0000 0000 1111 1100 0000 -> To square position (>> 6 & 0xFB)
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* 0000 0000 0000 0000 1111 0000 0000 0000 -> captured piece, if any (>> 12 & 0xF)
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* 0000 0000 0000 1111 0000 0000 0000 0000 -> if prmoted, what to? (>> 16 & 0xF)
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* 0000 0000 0001 0000 0000 0000 0000 0000 -> en passant (& 0x100000)
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* 0000 0000 0010 0000 0000 0000 0000 0000 -> pawn starting move (& 0x200000)
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* 0000 0000 0100 0000 0000 0000 0000 0000 -> castle move (& 0x400000)
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* */
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// This is testing position H1
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const unsigned int MOVE_G1 = 0x3f;
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// This is testing position G1
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const unsigned int MOVE_H1 = 0x3e;
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// This is testing a move with no flags from G1 to H1
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// // Want:
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// 1111 1111 1110
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// FFE
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const unsigned int MOVE_G1_TO_H1 = 0xffe;
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// This is testing a move with no flags from H1 to G1
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// Want:
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// 1111 1011 1111
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// FBF
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const unsigned int MOVE_H1_TO_G1 = 0b111110111111;
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// Move from H1 to G1 and capture
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const unsigned int MOVE_H1_TO_G1_get_captured_pcURE_B_KNIGHT = 0x8fbf;
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// Move from H1 to G1 and promote
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const unsigned int MOVE_H1_TO_G1_get_promoted_to_pcOTE_TO_QUEEN = 0xb0fbf;
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// Move from H1 to G1 and en passant
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const unsigned int MOVE_H1_TO_G1_EN_PASSANT = 0x100fbf;
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// Move from H1 to G1 and its the starting move for a pawn
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const unsigned int MOVE_H1_TO_G1_PAWN_START = 0x200fbf;
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// Move from H1 to G1 and castle
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const unsigned int MOVE_H1_TO_G1_AND_get_castle_flagLE = 0x400fbf;
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// Want:
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// From: E3 (21) [0x15] [0x15] <0x15>
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// To: D2 (12) [0xB] [0xB] <0x3DF>
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// (these 2 combine together) (33) [0x20] [0x3DF] <>
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// Captures: B_PAWM (7) [0x7] [0x7000] <0x73DF>
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// Promoted: NONE (0) [0x0] [0x0] <>
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// en passant: true (1) [0x1] [0x100000] <0x1003DF>
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// pawn starting move: false (0) [0x0] [0x0] <>
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// castle move: false (0) [0x0] [0x0] <>
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// total value: (?) [?] [?} <0x1003DF>
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const unsigned int GET_ALL_INT = 0x1003DF;
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TEST_CASE("Test that bitwise operators return appropriate values. Move.from", "[bitwise_from_pos]"){
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CHECK(get_from_sq(MOVE_G1) == Position::H1);
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CHECK(get_from_sq(MOVE_H1) == Position::G1);
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CHECK(get_to_sq(MOVE_G1_TO_H1) == Position::H1);
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CHECK(get_from_sq(MOVE_G1_TO_H1) == Position::G1);
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CHECK(get_to_sq(MOVE_H1_TO_G1) == Position::G1);
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CHECK(get_from_sq(MOVE_H1_TO_G1) == Position::H1);
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CHECK(get_captured_pc(MOVE_H1_TO_G1_get_captured_pcURE_B_KNIGHT) == PieceType::B_KNIGHT);
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CHECK(get_promoted_to_pc(MOVE_H1_TO_G1_get_promoted_to_pcOTE_TO_QUEEN) == PieceType::B_QUEEN);
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CHECK(get_en_pass_flag(MOVE_H1_TO_G1_EN_PASSANT) == 1);
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CHECK(get_pawn_st_flag(MOVE_H1_TO_G1_PAWN_START) == 1);
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CHECK(get_castle_flag(MOVE_H1_TO_G1_AND_get_castle_flagLE) == 1);
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}
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