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// SPDX-License-Identifier: MIT
// Copyright (c) 2026 Paul Buetow
package repl
import (
"strings"
"testing"
)
func TestCommands(t *testing.T) {
cmds := Commands()
if len(cmds) == 0 {
t.Error("Commands() should return at least one command")
}
}
func TestExecuteCommandRPN(t *testing.T) {
_, err := ExecuteCommand("rpn")
if err != nil {
t.Fatalf("ExecuteCommand('rpn') returned error: %v", err)
}
}
func TestExecuteCommandCalc(t *testing.T) {
_, err := ExecuteCommand("calc")
if err != nil {
t.Fatalf("ExecuteCommand('calc') returned error: %v", err)
}
}
func TestExecuteCommandHelpWithUnknownSubcommand(t *testing.T) {
output, err := ExecuteCommand("help unknown")
if err != nil {
t.Fatalf("ExecuteCommand('help unknown') returned error: %v", err)
}
if !strings.Contains(output, "No help available") {
t.Errorf("ExecuteCommand('help unknown') should mention 'No help available', got: %s", output[:50])
}
}
func TestExecuteCommandHelpForHelp(t *testing.T) {
output, err := ExecuteCommand("help help")
if err != nil {
t.Fatalf("ExecuteCommand('help help') returned error: %v", err)
}
if !strings.Contains(output, "help") {
t.Errorf("ExecuteCommand('help help') output should contain 'help', got: %s", output[:50])
}
}
func TestExecuteCommandHelp(t *testing.T) {
output, err := ExecuteCommand("help")
if err != nil {
t.Fatalf("ExecuteCommand('help') returned error: %v", err)
}
if output == "" {
t.Error("ExecuteCommand('help') returned empty output")
}
if !strings.Contains(output, "PERC") {
t.Errorf("ExecuteCommand('help') output should contain 'PERC', got: %s", output[:50])
}
}
func TestExecuteCommandHelpWithSubcommand(t *testing.T) {
output, err := ExecuteCommand("help clear")
if err != nil {
t.Fatalf("ExecuteCommand('help clear') returned error: %v", err)
}
if output == "" {
t.Error("ExecuteCommand('help clear') returned empty output")
}
if !strings.Contains(output, "Clear") {
t.Errorf("ExecuteCommand('help clear') output should contain 'Clear', got: %s", output[:50])
}
}
func TestExecuteCommandUnknownCommand(t *testing.T) {
_, err := ExecuteCommand("unknown")
if err == nil {
t.Error("ExecuteCommand('unknown') should return error, got nil")
}
if !strings.Contains(err.Error(), "unknown command") {
t.Errorf("Error should mention 'unknown command', got: %v", err)
}
}
func TestExecuteCommandClear(t *testing.T) {
_, err := ExecuteCommand("clear")
if err != nil {
t.Fatalf("ExecuteCommand('clear') returned error: %v", err)
}
}
func TestExecuteCommandQuit(t *testing.T) {
_, err := ExecuteCommand("quit")
if err != nil {
t.Fatalf("ExecuteCommand('quit') returned error: %v", err)
}
}
func TestExecuteCommandExit(t *testing.T) {
_, err := ExecuteCommand("exit")
if err != nil {
t.Fatalf("ExecuteCommand('exit') returned error: %v", err)
}
}
func TestExecuteCommandEmpty(t *testing.T) {
_, err := ExecuteCommand("")
if err != nil {
t.Fatalf("ExecuteCommand('') returned error: %v", err)
}
}
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