mirror of
https://github.com/neilotoole/sq.git
synced 2024-12-18 13:41:49 +03:00
93 lines
2.4 KiB
Go
93 lines
2.4 KiB
Go
package ast
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import (
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"testing"
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"github.com/stretchr/testify/require"
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"github.com/neilotoole/sq/libsq/core/lg/lgt"
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)
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func TestChildIndex(t *testing.T) {
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const q1 = `@mydb1 | .user | join(.address, .user.uid == .address.uid) | .uid, .username, .country`
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p := getSLQParser(q1)
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query := p.Query()
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ast, err := buildAST(lgt.New(t), query)
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require.Nil(t, err)
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require.NotNil(t, ast)
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require.Equal(t, 4, len(ast.Segments()))
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for i, seg := range ast.Segments() {
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index := nodeChildIndex(ast, seg)
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require.Equal(t, i, index)
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}
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}
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func TestNodesWithType(t *testing.T) {
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nodes := []Node{&ColSelectorNode{}, &ColSelectorNode{}, &TblSelectorNode{}, &RowRangeNode{}}
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require.Equal(t, 2, len(nodesWithType(nodes, typeColSelectorNode)))
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require.Equal(t, 1, len(nodesWithType(nodes, typeTblSelectorNode)))
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require.Equal(t, 1, len(nodesWithType(nodes, typeRowRangeNode)))
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require.Equal(t, 0, len(nodesWithType(nodes, typeJoinNode)))
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}
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func TestNodePrevNextSibling(t *testing.T) {
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const in = `@sakila | .actor | .actor_id == 2`
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log := lgt.New(t)
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a, err := Parse(log, in)
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require.NoError(t, err)
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equalsNode := NodesHavingText(a, "==")[0]
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gotPrev := NodePrevSibling(equalsNode)
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require.Equal(t, ".actor_id", gotPrev.Text())
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require.Nil(t, NodePrevSibling(gotPrev))
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gotNext := NodeNextSibling(equalsNode)
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require.Equal(t, "2", gotNext.Text())
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require.Nil(t, NodeNextSibling(gotNext))
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}
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func TestNodeUnwrap(t *testing.T) {
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var ok bool
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exprA := &ExprNode{}
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exprB := &ExprNode{}
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var gotExpr *ExprNode
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gotExpr, ok = NodeUnwrap[*ExprNode](exprA)
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require.True(t, ok)
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require.True(t, exprA == gotExpr)
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require.NoError(t, exprA.AddChild(exprB))
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gotExpr, ok = NodeUnwrap[*ExprNode](exprA)
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require.True(t, ok)
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require.True(t, exprB == gotExpr)
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litA := &LiteralNode{}
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var gotLit *LiteralNode
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require.NoError(t, exprB.AddChild(litA))
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gotLit, ok = NodeUnwrap[*LiteralNode](exprA)
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require.True(t, ok)
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require.True(t, litA == gotLit)
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litB := &LiteralNode{}
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require.NoError(t, exprB.AddChild(litB))
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gotLit, ok = NodeUnwrap[*LiteralNode](exprA)
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require.False(t, ok, "should fail because exprB has multiple children")
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require.Nil(t, gotLit)
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}
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func TestFindNodes(t *testing.T) {
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const in = `@sakila | .actor | .actor_id == 2 | .actor_id, .first_name, .last_name`
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a, err := Parse(lgt.New(t), in)
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require.NoError(t, err)
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handles := FindNodes[*HandleNode](a)
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require.Len(t, handles, 1)
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require.Equal(t, "@sakila", handles[0].Handle())
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}
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