96 lines
3.1 KiB
Go
96 lines
3.1 KiB
Go
// Copyright (c) 2020 Alexander Kiryukhin <a.kiryukhin@mail.ru>
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// Permission is hereby granted, free of charge, to any person obtaining a copy
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// of this software and associated documentation files (the "Software"), to deal
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// in the Software without restriction, including without limitation the rights
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// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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// copies of the Software, and to permit persons to whom the Software is
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// furnished to do so, subject to the following conditions:
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// The above copyright notice and this permission notice shall be included in all
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// copies or substantial portions of the Software.
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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// SOFTWARE.
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package executor
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import "testing"
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func TestCalc(t *testing.T) {
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funcs := []*Function{
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NewFunction("negative", func(args ...float64) (f float64, err error) {
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return -args[0], nil
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}, 1),
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NewFunction("sum", func(args ...float64) (f float64, err error) {
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return args[0] + args[1], nil
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}, 2),
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}
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operators := []*Operator{
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NewOperator("==", 1, LeftAssoc, func(a, b float64) (float64, error) {
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if a == b {
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return 1, nil
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}
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return 0, nil
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}),
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}
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tests := []struct {
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name string
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expression string
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expected float64
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vars map[string]float64
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funcs []*Function
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operators []*Operator
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}{
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{"simple", "((15/(7-(1+1)))*-3)-(-2+(1+1))", ((15.0 / (7.0 - (1.0 + 1.0))) * -3.0) - (-2.0 + (1.0 + 1.0)), nil, nil, nil},
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{"variables", "a+b*c", 14.0, map[string]float64{"a": 2.0, "b": 3.0, "c": 4.0}, nil, nil},
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{"functions 1 arg", "negative(10)", -10.0, nil, funcs, nil},
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{"functions 2 arg", "negative(sum(10, 20)+20)", -50.0, nil, funcs, nil},
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{"custom operator", "10 == 10", 1, nil, nil, operators},
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{"custom operator 2", "10 == 12", 0, nil, nil, operators},
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}
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for _, test := range tests {
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t.Run(test.name, func(t *testing.T) {
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c := NewCalc()
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c.AddOperators(MathOperators)
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if test.funcs != nil {
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c.AddFunctions(test.funcs)
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}
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if test.operators != nil {
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c.AddOperators(test.operators)
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}
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if err := c.Prepare(test.expression); err != nil {
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t.Error(err)
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}
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actual, err := c.Execute(test.vars)
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if err != nil {
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t.Error(err)
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}
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if actual != test.expected {
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t.Errorf("Expected %f, actual %f", test.expected, actual)
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}
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})
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}
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}
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func TestCalc2(t *testing.T) {
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c := NewCalc()
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c.AddOperators(MathOperators)
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if err := c.Prepare("((15/(7-(1+1)))*-3)-(-2+(1+1))"); err != nil {
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t.Error(err)
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}
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actual, err := c.Execute(nil)
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if err != nil {
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t.Error(err)
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}
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expected := ((15.0 / (7.0 - (1.0 + 1.0))) * -3.0) - (-2.0 + (1.0 + 1.0))
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if actual != expected {
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t.Errorf("Expected %f, actual %f", expected, actual)
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}
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}
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