package main

import "testing"

func TestStringAnonSettings_Apply(t *testing.T) {
	t.Run("Not replaced when nil", func(t *testing.T) {
		title := "Test"
		var anonTitle *StringAnonSettings = nil

		if anonTitle.Apply(title) != title {
			t.Fatal("The title should be unchanged.")
		}
	})

	t.Run("Not replaced when empty", func(t *testing.T) {
		title := "Test"
		anonTitle := &StringAnonSettings{ReplaceWith: ""}

		if anonTitle.Apply(title) != title {
			t.Fatal("The title should be unchanged.")
		}
	})

	t.Run("With whitelist", func(t *testing.T) {
		anonTitle := &StringAnonSettings{
			ReplaceWith: "#Replaced",
			Whitelist: []string{
				"lower",
				"Test",
				"With Space",
			},
		}

		t.Run("No match", func(t *testing.T) {
			if anonTitle.Apply("unrelated title") != "#Replaced" {
				t.Fatal("The title should have been replaced.")
			}
		})

		t.Run("Word found", func(t *testing.T) {
			if anonTitle.Apply("This is a Test title.") != "Test" {
				t.Fatal("One word should have matched.")
			}
		})

		t.Run("Case ignored", func(t *testing.T) {
			if anonTitle.Apply("Something with LOWER case.") != "lower" {
				t.Fatal("The lower case variant should have matched.")
			}
		})

		t.Run("Match with space", func(t *testing.T) {
			if anonTitle.Apply("A title With Space") != "With Space" {
				t.Fatal("A match with space should be found.")
			}
		})

		t.Run("Multiple matches", func(t *testing.T) {
			if anonTitle.Apply("Some lower title Test") != "lower Test" {
				t.Fatal("Multiple matches should be concatenated.")
			}
		})

		t.Run("Multiple matches keep their order", func(t *testing.T) {
			if anonTitle.Apply("Test title with lower order") != "Test lower" {
				t.Fatal("The original order should be kept")
			}
		})
	})
}