113 lines
2.6 KiB
C++
113 lines
2.6 KiB
C++
#include "harness.h"
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#define CHECK_PARSE(var, expr) \
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do { \
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var = Expr::From(expr, false); \
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CHECK_TRUE(var != NULL); \
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} while(0)
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#define CHECK_PARSE_ERR(expr, msg) \
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do { \
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std::string err; \
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Expr *e = Expr::Parse(expr, &err); \
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CHECK_TRUE(e == NULL); \
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CHECK_TRUE(err.find(msg) != std::string::npos); \
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} while(0)
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TEST_CASE(constant) {
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Expr *e;
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CHECK_PARSE(e, "pi");
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CHECK_EQ_EPS(e->Eval(), 3.1415926);
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}
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TEST_CASE(literal) {
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Expr *e;
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CHECK_PARSE(e, "42");
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CHECK_TRUE(e->Eval() == 42);
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CHECK_PARSE(e, "42.5");
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CHECK_TRUE(e->Eval() == 42.5);
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CHECK_PARSE(e, "1_000_000");
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CHECK_TRUE(e->Eval() == 1000000);
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}
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TEST_CASE(unary_ops) {
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Expr *e;
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CHECK_PARSE(e, "-10");
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CHECK_TRUE(e->Eval() == -10);
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}
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TEST_CASE(binary_ops) {
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Expr *e;
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CHECK_PARSE(e, "1 + 2");
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CHECK_TRUE(e->Eval() == 3);
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CHECK_PARSE(e, "1 - 2");
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CHECK_TRUE(e->Eval() == -1);
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CHECK_PARSE(e, "3 * 4");
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CHECK_TRUE(e->Eval() == 12);
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CHECK_PARSE(e, "3 / 4");
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CHECK_TRUE(e->Eval() == 0.75);
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}
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TEST_CASE(parentheses) {
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Expr *e;
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CHECK_PARSE(e, "(1 + 2) * 3");
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CHECK_TRUE(e->Eval() == 9);
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CHECK_PARSE(e, "1 + (2 * 3)");
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CHECK_TRUE(e->Eval() == 7);
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}
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TEST_CASE(functions) {
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Expr *e;
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CHECK_PARSE(e, "sqrt(2)");
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CHECK_EQ_EPS(e->Eval(), 1.414213);
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CHECK_PARSE(e, "square(3)");
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CHECK_EQ_EPS(e->Eval(), 9);
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CHECK_PARSE(e, "sin(180)");
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CHECK_EQ_EPS(e->Eval(), 0);
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CHECK_PARSE(e, "sin(90)");
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CHECK_EQ_EPS(e->Eval(), 1);
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CHECK_PARSE(e, "cos(180)");
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CHECK_EQ_EPS(e->Eval(), -1);
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CHECK_PARSE(e, "asin(1)");
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CHECK_EQ_EPS(e->Eval(), 90);
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CHECK_PARSE(e, "acos(0)");
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CHECK_EQ_EPS(e->Eval(), 90);
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}
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TEST_CASE(variable) {
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Expr *e;
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CHECK_PARSE(e, "Var");
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CHECK_TRUE(e->op == Expr::Op::VARIABLE);
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}
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TEST_CASE(precedence) {
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Expr *e;
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CHECK_PARSE(e, "2 + 3 * 4");
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CHECK_TRUE(e->Eval() == 14);
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CHECK_PARSE(e, "2 - 3 / 4");
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CHECK_TRUE(e->Eval() == 1.25);
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CHECK_PARSE(e, "-3 + 2");
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CHECK_TRUE(e->Eval() == -1);
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CHECK_PARSE(e, "2 + 3 - 4");
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CHECK_TRUE(e->Eval() == 1);
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}
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TEST_CASE(errors) {
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CHECK_PARSE_ERR("\x01",
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"Unexpected character");
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CHECK_PARSE_ERR("notavar",
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"'notavar' is not a valid variable, function or constant");
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CHECK_PARSE_ERR("1e2e3",
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"'1e2e3' is not a valid number");
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CHECK_PARSE_ERR("_",
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"'_' is not a valid operator");
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CHECK_PARSE_ERR("2 2",
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"Expected an operator");
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CHECK_PARSE_ERR("2 + +",
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"Expected an operand");
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CHECK_PARSE_ERR("( 2 + 2",
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"Expected ')'");
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CHECK_PARSE_ERR("(",
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"Expected ')'");
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}
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