Function TestExistsExpression

pkg/sql/ast/nodes_test.go:978–1014

Test ExistsExpression node

(t *testing.T)

// Test ExistsExpression node
func TestExistsExpression(t *testing.T) {
	tests := []struct {
		name         string
		existsExpr   *ExistsExpression
		wantLiteral  string
		wantChildren int
	}{
		{
			name: "EXISTS with subquery",
			existsExpr: &ExistsExpression{
				Subquery: &SelectStatement{},
			},
			wantLiteral:  "EXISTS",
			wantChildren: 1,
		},
	}

	for _, tt := range tests {
		tt := tt // G601: Create local copy to avoid memory aliasing
		t.Run(tt.name, func(t *testing.T) {
			// Test TokenLiteral
			if got := tt.existsExpr.TokenLiteral(); got != tt.wantLiteral {
				t.Errorf("ExistsExpression.TokenLiteral() = %v, want %v", got, tt.wantLiteral)
			}

			// Test Children
			children := tt.existsExpr.Children()
			if len(children) != tt.wantChildren {
				t.Errorf("ExistsExpression.Children() count = %d, want %d", len(children), tt.wantChildren)
			}

			// Test that it implements Expression interface
			var _ Expression = tt.existsExpr
			tt.existsExpr.expressionNode()
		})
	}
}

// Test InExpression node
func TestInExpression(t *testing.T) {