page_test.go

package andrew

import (
	"maps"
	"testing"

	"github.com/google/go-cmp/cmp"
)

func TestTitleDiscoveryReturnsErrorWhenNoTitleElementInPageContent(t *testing.T) {
	_, err := titleFromHTMLTitleElement([]byte("snibble"))

	if err.Error() != "no title element found" {
		t.Fatalf("Expected error, received %v", err)
	}
}

func TestTitleElementDiscoveredWhenPresentInPageContent(t *testing.T) {
	expected := "my title"
	received, err := titleFromHTMLTitleElement([]byte("<title>" + expected + "</title>"))

	if err != nil {
		t.Fatal(err)
	}

	if received != expected {
		t.Fatal(cmp.Diff(expected, received))
	}
}

func TestGetTitleReturnsPageFileNameWhenNoTitleInDocument(t *testing.T) {
	received, err := getTitle("page title", []byte{})

	if err != nil {
		t.Fatal(err)
	}

	if received != "page title" {
		t.Fatal(cmp.Diff("", received))
	}
}

func TestOneMetaTagPopulatesATag(t *testing.T) {
	expected := map[string]string{"andrew-publish-time": "2025-03-01"}
	received, err := GetMetaElements([]byte("<meta name=andrew-publish-time content=2025-03-01>"))

	if err != nil {
		t.Fatal(err)
	}

	if !maps.Equal(expected, received) {
		t.Fatal(cmp.Diff(expected, received))
	}
}

func TestMultipleMetaTagsPopulatedWithExpectedElements(t *testing.T) {
	expected := map[string]string{"andrew-publish-time": "2025-03-01", "andrew-roflcopter": "hippolol"}
	received, err := GetMetaElements([]byte("<meta name=andrew-publish-time content=2025-03-01> <meta name=andrew-roflcopter content=hippolol>"))

	if err != nil {
		t.Fatal(err)
	}

	if !maps.Equal(expected, received) {
		t.Fatal(cmp.Diff(expected, received))
	}
}