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126 lines
2.9 KiB
126 lines
2.9 KiB
package bounded_tree
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import (
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"fmt"
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"testing"
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"github.com/stretchr/testify/assert"
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"github.com/chrislusf/seaweedfs/weed/util"
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)
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var (
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visitFn = func(path util.FullPath) (childDirectories []string, err error) {
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fmt.Printf(" visit %v ...\n", path)
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switch path {
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case "/":
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return []string{"a", "g", "h"}, nil
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case "/a":
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return []string{"b", "f"}, nil
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case "/a/b":
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return []string{"c", "e"}, nil
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case "/a/b/c":
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return []string{"d"}, nil
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case "/a/b/c/d":
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return []string{"i", "j"}, nil
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case "/a/b/c/d/i":
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return []string{}, nil
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case "/a/b/c/d/j":
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return []string{}, nil
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case "/a/b/e":
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return []string{}, nil
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case "/a/f":
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return []string{}, nil
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}
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return nil, nil
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}
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printMap = func(m map[string]*Node) {
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for k := range m {
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println(" >", k)
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}
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}
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)
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func TestBoundedTree(t *testing.T) {
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// a/b/c/d/i
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// a/b/c/d/j
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// a/b/c/d
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// a/b/e
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// a/f
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// g
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// h
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tree := NewBoundedTree()
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tree.EnsureVisited(util.FullPath("/a/b/c"), visitFn)
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assert.Equal(t, true, tree.HasVisited(util.FullPath("/a/b")))
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assert.Equal(t, true, tree.HasVisited(util.FullPath("/a/b/c")))
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assert.Equal(t, false, tree.HasVisited(util.FullPath("/a/b/c/d")))
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assert.Equal(t, false, tree.HasVisited(util.FullPath("/a/b/e")))
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assert.Equal(t, false, tree.HasVisited(util.FullPath("/a/f")))
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assert.Equal(t, false, tree.HasVisited(util.FullPath("/g")))
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assert.Equal(t, false, tree.HasVisited(util.FullPath("/h")))
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assert.Equal(t, true, tree.HasVisited(util.FullPath("/")))
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assert.Equal(t, true, tree.HasVisited(util.FullPath("/x")))
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assert.Equal(t, false, tree.HasVisited(util.FullPath("/a/b/e/x")))
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printMap(tree.root.Children)
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a := tree.root.getChild("a")
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b := a.getChild("b")
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if !b.isVisited() {
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t.Errorf("expect visited /a/b")
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}
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c := b.getChild("c")
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if !c.isVisited() {
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t.Errorf("expect visited /a/b/c")
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}
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d := c.getChild("d")
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if d.isVisited() {
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t.Errorf("expect unvisited /a/b/c/d")
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}
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tree.EnsureVisited(util.FullPath("/a/b/c/d"), visitFn)
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tree.EnsureVisited(util.FullPath("/a/b/c/d/i"), visitFn)
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tree.EnsureVisited(util.FullPath("/a/b/c/d/j"), visitFn)
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tree.EnsureVisited(util.FullPath("/a/b/e"), visitFn)
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tree.EnsureVisited(util.FullPath("/a/f"), visitFn)
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printMap(tree.root.Children)
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}
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func TestEmptyBoundedTree(t *testing.T) {
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// g
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// h
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tree := NewBoundedTree()
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visitFn := func(path util.FullPath) (childDirectories []string, err error) {
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fmt.Printf(" visit %v ...\n", path)
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switch path {
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case "/":
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return []string{"g", "h"}, nil
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}
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t.Fatalf("expected visit %s", path)
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return nil, nil
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}
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tree.EnsureVisited(util.FullPath("/a/b"), visitFn)
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tree.EnsureVisited(util.FullPath("/a/b"), visitFn)
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printMap(tree.root.Children)
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assert.Equal(t, true, tree.HasVisited(util.FullPath("/a/b")))
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assert.Equal(t, true, tree.HasVisited(util.FullPath("/a")))
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assert.Equal(t, false, tree.HasVisited(util.FullPath("/g")))
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assert.Equal(t, false, tree.HasVisited(util.FullPath("/g/x")))
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}
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