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cmd/callgraph: add test of -algo=vta 

This should have been included in
https://go-review.googlesource.com/c/tools/+/410138

Change-Id: Ic8a4f1b5dbcdb320fb872b24484b830dcb56fd41
Reviewed-on: https://go-review.googlesource.com/c/tools/+/410123
Run-TryBot: Alan Donovan <adonovan@google.com>
Reviewed-by: Tim King <taking@google.com>
gopls-CI: kokoro <noreply+kokoro@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
Reviewed-by: Zvonimir Pavlinovic <zpavlinovic@google.com>
This commit is contained in:
Alan Donovan 2022-06-02 17:53:23 -04:00
parent 76325da620
commit af82757ce0
1 changed files with 15 additions and 1 deletions
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16
cmd/callgraph/main_test.go
View File

@ -59,6 +59,12 @@ func TestCallgraph(t *testing.T) {
`pkg.main2 --> (pkg.C).f`,
`pkg.main2 --> (pkg.D).f`,
}},
{"vta", false, []string{
// vta distinguishes main->C, main2->D.
"pkg.main --> (pkg.C).f",
"pkg.main --> pkg.main2",
"pkg.main2 --> (pkg.D).f",
}},
{"pta", false, []string{
// pta distinguishes main->C, main2->D. Also has a root node.
`<root> --> pkg.init`,
@ -75,6 +81,12 @@ func TestCallgraph(t *testing.T) {
`pkg.Example --> (pkg.C).f`,
`pkg.main --> (pkg.C).f`,
}},
{"vta", true, []string{
`pkg.test.main --> testing.MainStart`,
`testing.runExample --> pkg.Example`,
`pkg.Example --> (pkg.C).f`,
`pkg.main --> (pkg.C).f`,
}},
{"pta", true, []string{
`<root> --> pkg.test.main`,
`<root> --> pkg.main`,
@ -95,13 +107,15 @@ func TestCallgraph(t *testing.T) {
for _, line := range strings.Split(fmt.Sprint(stdout), "\n") {
edges[line] = true
}
ok := true
for _, edge := range test.want {
if !edges[edge] {
ok = false
t.Errorf("callgraph(%q, %t): missing edge: %s",
test.algo, test.tests, edge)
}
}
if t.Failed() {
if !ok {
t.Log("got:\n", stdout)
}
}