Added unit tests for CLI

cmd/jobsearch/main_test.go

@@ -0,0 +1,52 @@
+package main
+
+import (
+	"slices"
+	"testing"
+
+	"git.avsdev.uk/Go/job-search/internal/cli/cmdtest"
+)
+
+// The commands are tested in their own packages under internal/cli. These
+// tests check newRootCmd puts them together.
+
+func TestCommandTree(t *testing.T) {
+	root := newRootCmd()
+	var names []string
+	for _, c := range root.Commands() {
+		names = append(names, c.Name())
+	}
+	for _, want := range []string{"config", "db", "fetch", "migrate", "version"} {
+		if !slices.Contains(names, want) {
+			t.Errorf("job-search has no %q command; has %v", want, names)
+		}
+	}
+	for _, flag := range []string{"config", "debug", "quiet"} {
+		if root.PersistentFlags().Lookup(flag) == nil {
+			t.Errorf("job-search has no --%s flag", flag)
+		}
+	}
+}
+
+func TestVersion(t *testing.T) {
+	cmdtest.Setup(t, "")
+	cmdtest.Contains(t, cmdtest.MustRun(t, newRootCmd, "version"), "JobSearch - ")
+}
+
+// A command that loads the configuration runs through the real root: its
+// flags and hooks, and the subcommand beneath it.
+func TestRootRunsCommands(t *testing.T) {
+	cmdtest.Setup(t, "logging:\n  level: info\n")
+	cmdtest.Contains(t, cmdtest.MustRun(t, newRootCmd, "config", "get", "logging.level"),
+		"info <string>")
+	cmdtest.Contains(t,
+		cmdtest.MustRun(t, newRootCmd, "config", "get", "logging.level", "--debug"),
+		"debug <string>")
+}
+
+func TestUnknownCommand(t *testing.T) {
+	cmdtest.Setup(t, "")
+	if _, err := cmdtest.Run(t, newRootCmd, "", "nope"); err == nil {
+		t.Error("an unknown command was accepted")
+	}
+}