tijani
a170eb4450
git-svn-id: https://svn.tlawal.org/svn/monkey@47 f6afcba9-9ef1-4bdd-9b72-7484f5705bac
98 lines
2.0 KiB
Go
98 lines
2.0 KiB
Go
package evaluator
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import (
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"monkey/lexer"
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"monkey/object"
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"monkey/parser"
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"testing"
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)
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func TestEvalIntegerExpression(l_test *testing.T) {
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tests := []struct {
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input string
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expected int64
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}{
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{"5", 5},
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{"10", 10},
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{"-10", -10},
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{"-5", -5},
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}
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for _, tt := range tests {
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evaluated := test_eval(tt.input)
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test_integer_object(l_test, evaluated, tt.expected)
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}
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}
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func TestEvalBooleanExpression(l_test *testing.T) {
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tests := []struct {
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input string
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expected bool
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}{
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{"true", true},
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{"false", false},
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}
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for _, tt := range tests {
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evaluated := test_eval(tt.input)
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test_boolean_object(l_test, evaluated, tt.expected)
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}
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}
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// Test to convert the '!' operator to boolean value and negate it
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func TestBangOperator(l_test *testing.T) {
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tests := []struct {
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input string
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expected bool
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}{
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{"!true", false},
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{"!false", true},
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{"!5", false},
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{"!!true", true},
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{"!!false", false},
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{"!!5", true},
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}
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for _, tt := range tests {
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evaluated := test_eval(tt.input)
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test_boolean_object(l_test, evaluated, tt.expected)
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}
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}
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// Helpers
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func test_eval(input string) object.Object {
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l_lexer := lexer.New(input)
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l_parser := parser.New(l_lexer)
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program := l_parser.ParseProgram()
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return Eval(program)
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}
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func test_integer_object(l_test *testing.T, l_object object.Object, expected int64) bool {
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result, ok := l_object.(*object.Integer)
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if !ok {
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l_test.Errorf("object is not integer, got=%T (%+v)", l_object, l_object)
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return false
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}
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if result.Value != expected {
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l_test.Errorf("object has wrong value, got=%d, want=%d", result.Value, expected)
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return false
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}
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return true
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}
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func test_boolean_object(l_test *testing.T, l_object object.Object, expected bool) bool {
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result, ok := l_object.(*object.Boolean)
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if !ok {
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l_test.Errorf("object is not Boolean, got=%T (%+v)", l_object, l_object)
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return false
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}
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if result.Value != expected {
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l_test.Errorf("object has wrong value, got=%T, want=%t", result.Value, expected)
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return false
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}
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return true
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}
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