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|
package main
import (
"io/ioutil"
"os"
"path/filepath"
"testing"
)
type test struct {
name string
in string
out string
}
var tests = []test{
{
name: "no imports",
in: `package main
`,
out: `package main; import "github.com/bazelbuild/rules_go/go/tools/coverdata"
func init() {
coverdata.RegisterFile("srcName",
varName.Count[:],
varName.Pos[:],
varName.NumStmt[:])
}
`,
},
{
name: "other imports",
in: `package main
import (
"os"
)
`,
out: `package main; import "github.com/bazelbuild/rules_go/go/tools/coverdata"
import (
"os"
)
func init() {
coverdata.RegisterFile("srcName",
varName.Count[:],
varName.Pos[:],
varName.NumStmt[:])
}
`,
},
{
name: "existing import",
in: `package main
import "github.com/bazelbuild/rules_go/go/tools/coverdata"
`,
out: `package main
import "github.com/bazelbuild/rules_go/go/tools/coverdata"
func init() {
coverdata.RegisterFile("srcName",
varName.Count[:],
varName.Pos[:],
varName.NumStmt[:])
}
`,
},
{
name: "existing _ import",
in: `package main
import _ "github.com/bazelbuild/rules_go/go/tools/coverdata"
`,
out: `package main
import coverdata "github.com/bazelbuild/rules_go/go/tools/coverdata"
func init() {
coverdata.RegisterFile("srcName",
varName.Count[:],
varName.Pos[:],
varName.NumStmt[:])
}
`,
},
{
name: "existing renamed import",
in: `package main
import cover0 "github.com/bazelbuild/rules_go/go/tools/coverdata"
`,
out: `package main
import cover0 "github.com/bazelbuild/rules_go/go/tools/coverdata"
func init() {
cover0.RegisterFile("srcName",
varName.Count[:],
varName.Pos[:],
varName.NumStmt[:])
}
`,
},
}
func TestRegisterCoverage(t *testing.T) {
var filename = filepath.Join(t.TempDir(), "test_input.go")
for _, test := range tests {
if err := ioutil.WriteFile(filename, []byte(test.in), 0666); err != nil {
t.Errorf("writing input file: %v", err)
return
}
err := registerCoverage(filename, "varName", "srcName")
if err != nil {
t.Errorf("%q: %+v", test.name, err)
continue
}
coverSrc, err := os.ReadFile(filename)
if err != nil {
t.Errorf("%q: %+v", test.name, err)
continue
}
if got, want := string(coverSrc), test.out; got != want {
t.Errorf("%q: got %v, want %v", test.name, got, want)
}
}
}
|
