Move internal packages to an internal folder

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

internal/reader/media/media_test.go

@@ -0,0 +1,109 @@
+// SPDX-FileCopyrightText: Copyright The Miniflux Authors. All rights reserved.
+// SPDX-License-Identifier: Apache-2.0
+
+package media // import "miniflux.app/v2/internal/reader/media"
+
+import "testing"
+
+func TestContentMimeType(t *testing.T) {
+	scenarios := []struct {
+		inputType, inputMedium, expectedMimeType string
+	}{
+		{"image/png", "image", "image/png"},
+		{"", "image", "image/*"},
+		{"", "video", "video/*"},
+		{"", "audio", "audio/*"},
+		{"", "", "application/octet-stream"},
+	}
+
+	for _, scenario := range scenarios {
+		content := &Content{Type: scenario.inputType, Medium: scenario.inputMedium}
+		result := content.MimeType()
+		if result != scenario.expectedMimeType {
+			t.Errorf(`Unexpected mime type, got %q instead of %q for type=%q medium=%q`,
+				result,
+				scenario.expectedMimeType,
+				scenario.inputType,
+				scenario.inputMedium,
+			)
+		}
+	}
+}
+
+func TestContentSize(t *testing.T) {
+	scenarios := []struct {
+		inputSize    string
+		expectedSize int64
+	}{
+		{"", 0},
+		{"123", int64(123)},
+	}
+
+	for _, scenario := range scenarios {
+		content := &Content{FileSize: scenario.inputSize}
+		result := content.Size()
+		if result != scenario.expectedSize {
+			t.Errorf(`Unexpected size, got %d instead of %d for %q`,
+				result,
+				scenario.expectedSize,
+				scenario.inputSize,
+			)
+		}
+	}
+}
+
+func TestPeerLinkType(t *testing.T) {
+	scenarios := []struct {
+		inputType        string
+		expectedMimeType string
+	}{
+		{"", "application/octet-stream"},
+		{"application/x-bittorrent", "application/x-bittorrent"},
+	}
+
+	for _, scenario := range scenarios {
+		peerLink := &PeerLink{Type: scenario.inputType}
+		result := peerLink.MimeType()
+		if result != scenario.expectedMimeType {
+			t.Errorf(`Unexpected mime type, got %q instead of %q for %q`,
+				result,
+				scenario.expectedMimeType,
+				scenario.inputType,
+			)
+		}
+	}
+}
+
+func TestDescription(t *testing.T) {
+	scenarios := []struct {
+		inputType           string
+		inputContent        string
+		expectedDescription string
+	}{
+		{"", "", ""},
+		{"html", "a <b>c</b>", "a <b>c</b>"},
+		{"plain", "a\nhttp://www.example.org/", `a<br><a href="http://www.example.org/">http://www.example.org/</a>`},
+	}
+
+	for _, scenario := range scenarios {
+		desc := &Description{Type: scenario.inputType, Description: scenario.inputContent}
+		result := desc.HTML()
+		if result != scenario.expectedDescription {
+			t.Errorf(`Unexpected description, got %q instead of %q for %q`,
+				result,
+				scenario.expectedDescription,
+				scenario.inputType,
+			)
+		}
+	}
+}
+
+func TestFirstDescription(t *testing.T) {
+	var descList DescriptionList
+	descList = append(descList, Description{})
+	descList = append(descList, Description{Description: "Something"})
+
+	if descList.First() != "Something" {
+		t.Errorf(`Unexpected description`)
+	}
+}