475 lines
11 KiB
Go
475 lines
11 KiB
Go
package xpath
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import (
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"strings"
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"testing"
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"github.com/antchfx/xmlquery"
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)
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// Parse test XML data once at the beginning for use in multiple tests
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func parseTestXML(t *testing.T, xmlData string) *xmlquery.Node {
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doc, err := xmlquery.Parse(strings.NewReader(xmlData))
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if err != nil {
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t.Fatalf("Failed to parse test XML: %v", err)
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}
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return doc
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}
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// XML test data as a string for our tests
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var testXML = `
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<store>
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<book category="fiction">
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<title lang="en">The Fellowship of the Ring</title>
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<author>J.R.R. Tolkien</author>
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<year>1954</year>
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<price>22.99</price>
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</book>
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<book category="fiction">
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<title lang="en">The Two Towers</title>
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<author>J.R.R. Tolkien</author>
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<year>1954</year>
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<price>23.45</price>
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</book>
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<book category="technical">
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<title lang="en">Learning XML</title>
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<author>Erik T. Ray</author>
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<year>2003</year>
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<price>39.95</price>
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</book>
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<bicycle>
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<color>red</color>
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<price>199.95</price>
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</bicycle>
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</store>
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`
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func TestEvaluator(t *testing.T) {
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// Parse the test XML data once for all test cases
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doc := parseTestXML(t, testXML)
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tests := []struct {
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name string
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path string
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error bool
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}{
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{
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name: "simple_element_access",
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path: "/store/bicycle/color",
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},
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{
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name: "recursive_element_access",
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path: "//price",
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},
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{
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name: "wildcard_element_access",
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path: "/store/book/*",
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},
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{
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name: "attribute_exists_predicate",
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path: "//title[@lang]",
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},
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{
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name: "attribute_equals_predicate",
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path: "//title[@lang='en']",
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},
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{
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name: "value_comparison_predicate",
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path: "/store/book[price>35.00]/title",
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error: true,
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},
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{
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name: "last_predicate",
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path: "/store/book[last()]/title",
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error: true,
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},
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{
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name: "last_minus_predicate",
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path: "/store/book[last()-1]/title",
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error: true,
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},
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{
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name: "position_predicate",
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path: "/store/book[position()<3]/title",
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error: true,
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},
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{
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name: "invalid_index",
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path: "/store/book[10]/title",
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error: true,
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},
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{
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name: "nonexistent_element",
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path: "/store/nonexistent",
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},
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}
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for _, tt := range tests {
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t.Run(tt.name, func(t *testing.T) {
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result, err := Get(doc, tt.path)
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// Handle expected errors
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if tt.error {
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if err == nil && len(result) == 0 {
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// If we expected an error but got empty results instead, that's okay
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return
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}
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if err != nil {
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// If we got an error as expected, that's okay
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return
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}
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} else if err != nil {
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// If we didn't expect an error but got one, that's a test failure
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t.Errorf("Get(%q) returned unexpected error: %v", tt.path, err)
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return
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}
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// Special cases where we don't care about exact matches
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switch tt.name {
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case "wildcard_element_access":
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// Just check that we got some elements
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if len(result) == 0 {
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t.Errorf("Expected multiple elements for wildcard, got none")
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}
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return
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case "attribute_exists_predicate", "attribute_equals_predicate":
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// Just check that we got some titles
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if len(result) == 0 {
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t.Errorf("Expected titles with lang attribute, got none")
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}
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// Ensure all are title elements
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for _, node := range result {
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if node.Data != "title" {
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t.Errorf("Expected title elements, got: %s", node.Data)
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}
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}
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return
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case "nonexistent_element":
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// Just check that we got empty results
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if len(result) != 0 {
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t.Errorf("Expected empty results for nonexistent element, got %d items", len(result))
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}
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return
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}
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// For other cases, just verify we got results
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if len(result) == 0 {
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t.Errorf("Expected results for path %s, got none", tt.path)
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}
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})
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}
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}
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func TestEdgeCases(t *testing.T) {
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t.Run("nil_node", func(t *testing.T) {
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result, err := Get(nil, "/store/book")
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if err == nil {
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t.Errorf("Expected error for nil node")
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return
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}
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if len(result) > 0 {
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t.Errorf("Expected empty result, got %v", result)
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}
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})
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t.Run("invalid_xml", func(t *testing.T) {
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invalidXML, err := xmlquery.Parse(strings.NewReader("<invalid>xml"))
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if err != nil {
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// If parsing fails, that's expected
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return
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}
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_, err = Get(invalidXML, "/store")
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if err == nil {
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t.Error("Expected error for invalid XML structure")
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}
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})
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// For these tests with the simple XML, we expect just one result
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simpleXML := `<root><book><title lang="en">Test</title></book></root>`
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doc := parseTestXML(t, simpleXML)
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t.Run("current_node", func(t *testing.T) {
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result, err := Get(doc, "/root/book/.")
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if err != nil {
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t.Errorf("Get() returned error: %v", err)
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return
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}
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if len(result) > 1 {
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t.Errorf("Expected at most 1 result, got %d", len(result))
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}
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if len(result) > 0 {
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// Verify it's the book node
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if result[0].Data != "book" {
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t.Errorf("Expected book node, got %v", result[0].Data)
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}
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}
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})
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t.Run("attributes", func(t *testing.T) {
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result, err := Get(doc, "/root/book/title/@lang")
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if err != nil {
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t.Errorf("Get() returned error: %v", err)
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return
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}
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if len(result) != 1 || result[0].InnerText() != "en" {
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t.Errorf("Expected 'en', got %v", result[0].InnerText())
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}
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})
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}
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func TestGetWithPaths(t *testing.T) {
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// Use a simplified, well-formed XML document
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simpleXML := `<store>
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<book category="fiction">
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<title lang="en">The Book Title</title>
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<author>Author Name</author>
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<price>19.99</price>
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</book>
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<bicycle>
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<color>red</color>
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<price>199.95</price>
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</bicycle>
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</store>`
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// Parse the XML for testing
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doc := parseTestXML(t, simpleXML)
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// Debug: Print the test XML
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t.Logf("Test XML:\n%s", simpleXML)
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tests := []struct {
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name string
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path string
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expectedValue string
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}{
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{
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name: "simple_element_access",
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path: "/store/bicycle/color",
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expectedValue: "red",
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},
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{
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name: "attribute_access",
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path: "/store/book/title/@lang",
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expectedValue: "en",
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},
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{
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name: "recursive_with_attribute",
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path: "//title[@lang='en']",
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expectedValue: "The Book Title",
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},
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}
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for _, tt := range tests {
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t.Run(tt.name, func(t *testing.T) {
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// Debug: Print the path we're looking for
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t.Logf("Looking for path: %s", tt.path)
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result, err := Get(doc, tt.path)
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if err != nil {
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t.Errorf("Get(%q) returned error: %v", tt.path, err)
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return
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}
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// Debug: Print the results
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t.Logf("Got %d results", len(result))
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for i, r := range result {
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t.Logf("Result %d: Node=%s, Value=%v", i, r.Data, r.InnerText())
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}
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// Check that we got results
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if len(result) == 0 {
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t.Errorf("Get(%q) returned no results", tt.path)
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return
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}
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// For attribute access test, do more specific checks
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if tt.name == "attribute_access" {
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// Check the first result's value matches expected
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if result[0].InnerText() != tt.expectedValue {
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t.Errorf("Attribute value: got %v, expected %s", result[0].InnerText(), tt.expectedValue)
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}
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}
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// For simple element access, check the text content
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if tt.name == "simple_element_access" {
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if text := result[0].InnerText(); text != tt.expectedValue {
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t.Errorf("Element text: got %s, expected %s", text, tt.expectedValue)
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}
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}
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// For recursive with attribute test, check title elements with lang="en"
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if tt.name == "recursive_with_attribute" {
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for _, node := range result {
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// Check the node is a title
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if node.Data != "title" {
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t.Errorf("Expected title element, got %s", node.Data)
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}
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// Check text content
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if text := node.InnerText(); text != tt.expectedValue {
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t.Errorf("Text content: got %s, expected %s", text, tt.expectedValue)
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}
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// Check attributes - find the lang attribute
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hasLang := false
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for _, attr := range node.Attr {
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if attr.Name.Local == "lang" && attr.Value == "en" {
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hasLang = true
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break
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}
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}
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if !hasLang {
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t.Errorf("Expected lang=\"en\" attribute, but it was not found")
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}
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}
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}
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})
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}
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}
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func TestSet(t *testing.T) {
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t.Run("simple element", func(t *testing.T) {
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xmlData := `<root><name>John</name></root>`
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doc := parseTestXML(t, xmlData)
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err := Set(doc, "/root/name", "Jane")
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if err != nil {
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t.Errorf("Set() returned error: %v", err)
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return
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}
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// Verify the change
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result, err := Get(doc, "/root/name")
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if err != nil {
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t.Errorf("Get() returned error: %v", err)
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return
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}
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if len(result) != 1 {
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t.Errorf("Expected 1 result, got %d", len(result))
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return
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}
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// Check text content
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if text := result[0].InnerText(); text != "Jane" {
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t.Errorf("Expected text 'Jane', got '%s'", text)
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}
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})
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t.Run("attribute", func(t *testing.T) {
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xmlData := `<root><element id="123"></element></root>`
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doc := parseTestXML(t, xmlData)
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err := Set(doc, "/root/element/@id", "456")
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if err != nil {
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t.Errorf("Set() returned error: %v", err)
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return
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}
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// Verify the change
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result, err := Get(doc, "/root/element/@id")
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if err != nil {
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t.Errorf("Get() returned error: %v", err)
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return
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}
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if len(result) != 1 {
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t.Errorf("Expected 1 result, got %d", len(result))
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return
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}
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// For attributes, check the inner text
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if text := result[0].InnerText(); text != "456" {
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t.Errorf("Expected attribute value '456', got '%s'", text)
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}
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})
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t.Run("indexed element", func(t *testing.T) {
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xmlData := `<root><items><item>first</item><item>second</item></items></root>`
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doc := parseTestXML(t, xmlData)
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err := Set(doc, "/root/items/item[1]", "changed")
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if err != nil {
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t.Errorf("Set() returned error: %v", err)
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return
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}
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// Verify the change using XPath that specifically targets the first item
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result, err := Get(doc, "/root/items/item[1]")
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if err != nil {
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t.Errorf("Get() returned error: %v", err)
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return
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}
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// Check if we have results
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if len(result) == 0 {
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t.Errorf("Expected at least one result for /root/items/item[1]")
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return
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}
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// Check text content
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if text := result[0].InnerText(); text != "changed" {
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t.Errorf("Expected text 'changed', got '%s'", text)
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}
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})
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}
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func TestSetAll(t *testing.T) {
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t.Run("multiple elements", func(t *testing.T) {
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xmlData := `<root><items><item>first</item><item>second</item></items></root>`
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doc := parseTestXML(t, xmlData)
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err := SetAll(doc, "//item", "changed")
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if err != nil {
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t.Errorf("SetAll() returned error: %v", err)
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return
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}
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// Verify all items are changed
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result, err := Get(doc, "//item")
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if err != nil {
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t.Errorf("Get() returned error: %v", err)
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return
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}
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if len(result) != 2 {
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t.Errorf("Expected 2 results, got %d", len(result))
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return
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}
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// Check each node
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for i, node := range result {
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if text := node.InnerText(); text != "changed" {
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t.Errorf("Item %d: expected text 'changed', got '%s'", i, text)
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}
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}
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})
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t.Run("attributes", func(t *testing.T) {
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xmlData := `<root><item id="1"/><item id="2"/></root>`
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doc := parseTestXML(t, xmlData)
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err := SetAll(doc, "//item/@id", "new")
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if err != nil {
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t.Errorf("SetAll() returned error: %v", err)
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return
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}
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// Verify all attributes are changed
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result, err := Get(doc, "//item/@id")
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if err != nil {
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t.Errorf("Get() returned error: %v", err)
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return
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}
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if len(result) != 2 {
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t.Errorf("Expected 2 results, got %d", len(result))
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return
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}
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// For attributes, check inner text
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for i, node := range result {
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if text := node.InnerText(); text != "new" {
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t.Errorf("Attribute %d: expected value 'new', got '%s'", i, text)
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}
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}
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})
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}
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