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44 lines
1.1 KiB
Go
44 lines
1.1 KiB
Go
package ast
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import (
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"testing"
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"github.com/stretchr/testify/assert"
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)
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func TestSegment(t *testing.T) {
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const q1 = `@mydb1 | .user | join(.address, .user.uid == .address.uid) | .uid, .username, .country`
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ast := mustParse(t, q1)
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segs := ast.Segments()
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assert.Equal(t, 4, len(segs))
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assert.Nil(t, ast.Segments()[0].Prev(), "first segment should not have a parent")
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assert.Equal(t, ast.Segments()[0], ast.Segments()[1].Prev())
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assert.Equal(t, ast.Segments()[1], ast.Segments()[2].Prev())
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ok, err := ast.Segments()[0].uniformChildren()
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assert.Nil(t, err)
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assert.True(t, ok)
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typ, err := ast.Segments()[0].ChildType()
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assert.Nil(t, err)
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assert.NotNil(t, typ)
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assert.Equal(t, typeHandleNode.String(), typ.String())
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typ, err = ast.Segments()[1].ChildType()
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assert.Nil(t, err)
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assert.NotNil(t, typ)
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assert.Equal(t, typeTblSelectorNode.String(), typ.String())
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typ, err = ast.Segments()[2].ChildType()
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assert.Nil(t, err)
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assert.NotNil(t, typ)
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assert.Equal(t, typeJoinNode.String(), typ.String())
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typ, err = ast.Segments()[3].ChildType()
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assert.Nil(t, err)
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assert.NotNil(t, typ)
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assert.Equal(t, typeColSelectorNode.String(), typ.String())
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}
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