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// Licensed to the Apache Software Foundation (ASF) under one
// or more contributor license agreements. See the NOTICE file
// distributed with this work for additional information
// regarding copyright ownership. The ASF licenses this file
// to you under the Apache License, Version 2.0 (the
// "License"); you may not use this file except in compliance
// with the License. You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
//go:build go1.18
package compute_test
import (
"testing"
"github.com/apache/arrow-go/v18/arrow"
"github.com/apache/arrow-go/v18/arrow/compute"
"github.com/stretchr/testify/assert"
"github.com/stretchr/testify/require"
)
func TestArityBasics(t *testing.T) {
nullary := compute.Nullary()
assert.Equal(t, 0, nullary.NArgs)
assert.False(t, nullary.IsVarArgs)
unary := compute.Unary()
assert.Equal(t, 1, unary.NArgs)
assert.False(t, unary.IsVarArgs)
binary := compute.Binary()
assert.Equal(t, 2, binary.NArgs)
assert.False(t, binary.IsVarArgs)
ternary := compute.Ternary()
assert.Equal(t, 3, ternary.NArgs)
assert.False(t, ternary.IsVarArgs)
varargs := compute.VarArgs(2)
assert.Equal(t, 2, varargs.NArgs)
assert.True(t, varargs.IsVarArgs)
}
func CheckDispatchBest(t *testing.T, funcName string, originalTypes, expected []arrow.DataType) {
fn, exists := compute.GetFunctionRegistry().GetFunction(funcName)
require.True(t, exists)
vals := make([]arrow.DataType, len(originalTypes))
copy(vals, originalTypes)
actualKernel, err := fn.DispatchBest(vals...)
require.NoError(t, err)
expKernel, err := fn.DispatchExact(expected...)
require.NoError(t, err)
assert.Same(t, expKernel, actualKernel)
assert.Equal(t, len(expected), len(vals))
for i, v := range vals {
assert.True(t, arrow.TypeEqual(v, expected[i]), v.String(), expected[i].String())
}
}
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