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// Copyright 2016 Google Inc. All rights reserved.
//
// Licensed 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.
package android
import (
"fmt"
"testing"
)
var vars = map[string]string{
"var1": "abc",
"var2": "",
"var3": "def",
"💩": "😃",
}
func expander(s string) (string, error) {
if val, ok := vars[s]; ok {
return val, nil
} else {
return "", fmt.Errorf("unknown variable %q", s)
}
}
var expandTestCases = []struct {
in string
out string
err bool
}{
{
in: "$(var1)",
out: "abc",
},
{
in: "$( var1 )",
out: "abc",
},
{
in: "def$(var1)",
out: "defabc",
},
{
in: "$(var1)def",
out: "abcdef",
},
{
in: "def$(var1)def",
out: "defabcdef",
},
{
in: "$(var2)",
out: "",
},
{
in: "def$(var2)",
out: "def",
},
{
in: "$(var2)def",
out: "def",
},
{
in: "def$(var2)def",
out: "defdef",
},
{
in: "$(var1)$(var3)",
out: "abcdef",
},
{
in: "$(var1)g$(var3)",
out: "abcgdef",
},
{
in: "$$",
out: "$$",
},
{
in: "$$(var1)",
out: "$$(var1)",
},
{
in: "$$$(var1)",
out: "$$abc",
},
{
in: "$(var1)$$",
out: "abc$$",
},
{
in: "$(💩)",
out: "😃",
},
// Errors
{
in: "$",
err: true,
},
{
in: "$$$",
err: true,
},
{
in: "$(var1)$",
err: true,
},
{
in: "$(var1)$",
err: true,
},
{
in: "$(var4)",
err: true,
},
{
in: "$var1",
err: true,
},
{
in: "$(var1",
err: true,
},
{
in: "$a💩c",
err: true,
},
}
func TestExpand(t *testing.T) {
for _, test := range expandTestCases {
got, err := Expand(test.in, expander)
if err != nil && !test.err {
t.Errorf("%q: unexpected error %s", test.in, err.Error())
} else if err == nil && test.err {
t.Errorf("%q: expected error, got %q", test.in, got)
} else if !test.err && got != test.out {
t.Errorf("%q: expected %q, got %q", test.in, test.out, got)
}
}
}