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66 lines
1.2 KiB
Go
66 lines
1.2 KiB
Go
package readerio
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import (
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"context"
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"fmt"
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"strings"
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"testing"
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F "github.com/IBM/fp-go/function"
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IO "github.com/IBM/fp-go/io"
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T "github.com/IBM/fp-go/tuple"
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"github.com/stretchr/testify/assert"
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)
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func GoFunction(ctx context.Context, data string) IO.IO[string] {
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return func() string {
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return strings.ToUpper(data)
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}
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}
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func GoIntFunction(ctx context.Context, data string, number int) IO.IO[string] {
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return func() string {
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return fmt.Sprintf("%s: %d", data, number)
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}
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}
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func TestReaderFrom(t *testing.T) {
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ctx := context.Background()
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f := From1(GoFunction)
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result := f("input")(ctx)
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assert.Equal(t, result(), "INPUT")
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}
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func MyFinalResult(left, right string) string {
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return fmt.Sprintf("%s-%s", left, right)
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}
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func TestReadersFrom(t *testing.T) {
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ctx := context.Background()
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f1 := From1(GoFunction)
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f2 := From2(GoIntFunction)
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result1 := f1("input")(ctx)
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result2 := f2("input", 10)(ctx)
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result3 := MyFinalResult(result1(), result2())
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h := F.Pipe1(
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SequenceT2(f1("input"), f2("input", 10)),
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Map(T.Tupled2(MyFinalResult)),
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)
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composedResult := h(ctx)
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assert.Equal(t, result1(), "INPUT")
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assert.Equal(t, result2(), "input: 10")
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assert.Equal(t, result3, "INPUT-input: 10")
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assert.Equal(t, composedResult(), "INPUT-input: 10")
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}
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