5987233b99
Put them in a separate file for separation of concerns (making them testable) and add some tests.
45 строки
1 КиБ
Go
45 строки
1 КиБ
Go
package cgo
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import (
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"bytes"
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"go/format"
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"go/token"
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"testing"
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)
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func TestParseConst(t *testing.T) {
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// Test converting a C constant to a Go constant.
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for _, tc := range []struct {
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C string
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Go string
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}{
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{`5`, `5`},
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{`(5)`, `5`},
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{`(((5)))`, `5`},
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{`5.8f`, `5.8`},
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{`foo`, `<invalid>`}, // identifiers unimplemented
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{``, `<invalid>`}, // empty constants not allowed in Go
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{`"foo"`, `"foo"`},
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{`'a'`, `'a'`},
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{`0b10`, `<invalid>`}, // binary number literals unimplemented
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} {
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fset := token.NewFileSet()
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startPos := fset.AddFile("test.c", -1, 1000).Pos(0)
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expr := parseConst(startPos, tc.C)
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s := "<invalid>"
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if expr != nil {
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// Serialize the Go constant to a string, for more readable test
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// cases.
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buf := &bytes.Buffer{}
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err := format.Node(buf, fset, expr)
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if err != nil {
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t.Errorf("could not format expr from C constant %#v: %v", tc.C, err)
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continue
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}
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s = buf.String()
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}
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if s != tc.Go {
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t.Errorf("C constant %#v was parsed to %#v while expecting %#v", tc.C, s, tc.Go)
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}
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}
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}
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