Add test Directories() and Files() functions

tree_test.go

@@ -0,0 +1,72 @@
+package main
+
+import (
+	"os"
+	"testing"
+	"time"
+)
+
+// fileInfo for testing the tree
+type fileInfo struct {
+	name    string
+	size    int64
+	mode    os.FileMode
+	modTime time.Time
+}
+
+func (f fileInfo) Name() string {
+	return f.name
+}
+
+func (f fileInfo) Size() int64 {
+	return f.size
+}
+
+func (f fileInfo) Mode() os.FileMode {
+	return f.mode
+}
+
+func (f fileInfo) ModTime() time.Time {
+	return f.modTime
+}
+
+func (f fileInfo) IsDir() bool {
+	return f.mode.IsDir()
+}
+
+func (f fileInfo) Sys() interface{} {
+	return nil
+}
+
+func TestAddEntryIncrementsDirectoryAndFileCounts(t *testing.T) {
+	pano := time.Now()
+	fileMode := os.FileMode(0644)
+	files := []fileInfo{
+		fileInfo{"dir1", 1024, os.ModeDir, pano},
+		fileInfo{"dir2", 1024, os.ModeDir, pano},
+		fileInfo{"dir3", 1024, os.ModeDir, pano},
+		fileInfo{"file1", 1024, fileMode, pano},
+		fileInfo{"file2", 1024, fileMode, pano},
+		fileInfo{"file3", 1024, fileMode, pano},
+		fileInfo{"file4", 1024, fileMode, pano},
+	}
+
+	tree := &Tree{
+		Root:           NewNode("/", pano.Year(), pano.Month(), pano.Day()),
+		MaxDepth:       1,
+		directoryCount: 0,
+		fileCount:      0,
+	}
+
+	for _, f := range files {
+		tree.AddEntry(f)
+	}
+
+	if tree.Directories() != 3 {
+		t.Errorf("Tree's Directories() is incorrect. Got '%d', Expected '%d'", tree.Directories(), 3)
+	}
+
+	if tree.Files() != 4 {
+		t.Errorf("Tree's Files() is incorrect. Got '%d', Expected '%d'", tree.Files(), 4)
+	}
+}