Move internal packages to an internal folder

For reference: https://go.dev/doc/go1.4#internalpackages

internal/http/client/response_test.go

@@ -0,0 +1,148 @@
+// SPDX-FileCopyrightText: Copyright The Miniflux Authors. All rights reserved.
+// SPDX-License-Identifier: Apache-2.0
+
+package client // import "miniflux.app/v2/internal/http/client"
+
+import (
+	"bytes"
+	"os"
+	"strings"
+	"testing"
+	"unicode/utf8"
+)
+
+func TestIsNotFound(t *testing.T) {
+	scenarios := map[int]bool{
+		200: false,
+		404: true,
+		410: true,
+	}
+
+	for input, expected := range scenarios {
+		r := &Response{StatusCode: input}
+		actual := r.IsNotFound()
+
+		if actual != expected {
+			t.Errorf(`Unexpected result, got %v instead of %v for status code %d`, actual, expected, input)
+		}
+	}
+}
+
+func TestIsNotAuthorized(t *testing.T) {
+	scenarios := map[int]bool{
+		200: false,
+		401: true,
+		403: false,
+	}
+
+	for input, expected := range scenarios {
+		r := &Response{StatusCode: input}
+		actual := r.IsNotAuthorized()
+
+		if actual != expected {
+			t.Errorf(`Unexpected result, got %v instead of %v for status code %d`, actual, expected, input)
+		}
+	}
+}
+
+func TestHasServerFailure(t *testing.T) {
+	scenarios := map[int]bool{
+		200: false,
+		404: true,
+		500: true,
+	}
+
+	for input, expected := range scenarios {
+		r := &Response{StatusCode: input}
+		actual := r.HasServerFailure()
+
+		if actual != expected {
+			t.Errorf(`Unexpected result, got %v instead of %v for status code %d`, actual, expected, input)
+		}
+	}
+}
+
+func TestIsModifiedWith304Status(t *testing.T) {
+	r := &Response{StatusCode: 304}
+	if r.IsModified("etag", "lastModified") {
+		t.Error("The resource should not be considered modified")
+	}
+}
+
+func TestIsModifiedWithIdenticalEtag(t *testing.T) {
+	r := &Response{StatusCode: 200, ETag: "etag"}
+	if r.IsModified("etag", "lastModified") {
+		t.Error("The resource should not be considered modified")
+	}
+}
+
+func TestIsModifiedWithIdenticalLastModified(t *testing.T) {
+	r := &Response{StatusCode: 200, LastModified: "lastModified"}
+	if r.IsModified("etag", "lastModified") {
+		t.Error("The resource should not be considered modified")
+	}
+}
+
+func TestIsModifiedWithDifferentHeaders(t *testing.T) {
+	r := &Response{StatusCode: 200, ETag: "some etag", LastModified: "some date"}
+	if !r.IsModified("etag", "lastModified") {
+		t.Error("The resource should be considered modified")
+	}
+}
+
+func TestToString(t *testing.T) {
+	input := `test`
+	r := &Response{Body: strings.NewReader(input)}
+
+	if r.BodyAsString() != input {
+		t.Error(`Unexpected output`)
+	}
+}
+
+func TestEnsureUnicodeWithHTMLDocuments(t *testing.T) {
+	var unicodeTestCases = []struct {
+		filename, contentType string
+		convertedToUnicode    bool
+	}{
+		{"HTTP-charset.html", "text/html; charset=iso-8859-15", true},
+		{"UTF-16LE-BOM.html", "", true},
+		{"UTF-16BE-BOM.html", "", true},
+		{"meta-content-attribute.html", "text/html", true},
+		{"meta-charset-attribute.html", "text/html", true},
+		{"No-encoding-declaration.html", "text/html", true},
+		{"HTTP-vs-UTF-8-BOM.html", "text/html; charset=iso-8859-15", true},
+		{"HTTP-vs-meta-content.html", "text/html; charset=iso-8859-15", true},
+		{"HTTP-vs-meta-charset.html", "text/html; charset=iso-8859-15", true},
+		{"UTF-8-BOM-vs-meta-content.html", "text/html", true},
+		{"UTF-8-BOM-vs-meta-charset.html", "text/html", true},
+		{"windows_1251.html", "text/html; charset=windows-1251", true},
+		{"gb2312.html", "text/html", true},
+		{"urdu.xml", "text/xml; charset=utf-8", true},
+		{"content-type-only-win-8859-1.xml", "application/xml; charset=ISO-8859-1", true},
+		{"rdf_utf8.xml", "application/rss+xml; charset=utf-8", true},
+		{"rdf_utf8.xml", "application/rss+xml; charset: utf-8", true}, // Invalid Content-Type
+		{"charset-content-type-xml-iso88591.xml", "application/rss+xml; charset=ISO-8859-1", false},
+		{"windows_1251.xml", "text/xml", false},
+		{"smallfile.xml", "text/xml; charset=utf-8", true},
+		{"single_quote_xml_encoding.xml", "text/xml; charset=utf-8", true},
+	}
+
+	for _, tc := range unicodeTestCases {
+		content, err := os.ReadFile("testdata/" + tc.filename)
+		if err != nil {
+			t.Fatalf(`Unable to read file %q: %v`, tc.filename, err)
+		}
+
+		r := &Response{Body: bytes.NewReader(content), ContentType: tc.contentType}
+		parseErr := r.EnsureUnicodeBody()
+		if parseErr != nil {
+			t.Fatalf(`Unicode conversion error for %q - %q: %v`, tc.filename, tc.contentType, parseErr)
+		}
+
+		isUnicode := utf8.ValidString(r.BodyAsString())
+		if isUnicode != tc.convertedToUnicode {
+			t.Errorf(`Unicode conversion %q - %q, got: %v, expected: %v`,
+				tc.filename, tc.contentType, isUnicode, tc.convertedToUnicode)
+		}
+	}
+}