package apperr

import "testing"

func TestNormalize(t *testing.T) {
	cases := map[string]string{
		"user 4123 not found":                              "user <n> not found",
		"user 9911 not found":                              "user <n> not found",
		"HTTP 503 from upstream":                           "HTTP 503 from upstream",
		"retry 3 failed":                                   "retry 3 failed",
		"v2 handler panicked":                              "v2 handler panicked",
		"E404 for id 550e8400-e29b-41d4-a716-446655440000": "E404 for id <uuid>",
		`missing key "stripe_secret"`:                      `missing key "?"`,
		"trace 0123456789abcdef bad":                       "trace <hex> bad",
		"deadbeef cafe":                                    "<hex> cafe",
	}
	for in, want := range cases {
		if got := Normalize(in); got != want {
			t.Errorf("Normalize(%q) = %q, want %q", in, got, want)
		}
	}
}

func TestTopFrame(t *testing.T) {
	cases := map[string]string{
		"TypeError: x\n    at render (https://app.example/assets/main.3f2a9c1b.js:12:34)\n    at y": "TypeError: x",
		"\n  app/models/user.rb:42:in `find'\n  app/x.rb:1":                                         "app/models/user.rb:in `find'",
		"":                 "",
		"single line only": "single line only",
	}
	for in, want := range cases {
		if got := TopFrame(in); got != want {
			t.Errorf("TopFrame(%q) = %q, want %q", in, got, want)
		}
	}
}

func TestFingerprint(t *testing.T) {
	a := Fingerprint(SourceLog, KindLog, "user 4123 not found", "")
	b := Fingerprint(SourceLog, KindLog, "user 9911 not found", "")
	c := Fingerprint(SourceLog, KindLog, "user gone", "")
	d := Fingerprint(SourceEdge, KindLog, "user 4123 not found", "")
	if a != b {
		t.Fatalf("digit runs must group: %s != %s", a, b)
	}
	if a == c || a == d {
		t.Fatalf("different names or sources must not group: %s %s %s", a, c, d)
	}
	if len(a) != 16 {
		t.Fatalf("fingerprint length %d, want 16 hex", len(a))
	}
	// Length-delimited: ("ab","c") and ("a","bc") differ.
	if Fingerprint("ab", "c", "n", "") == Fingerprint("a", "bc", "n", "") {
		t.Fatal("components must be length-delimited")
	}
	// A redeploy's bundle hash and line numbers do not split a browser group.
	s1 := "TypeError: x\n    at render (https://a/main.3f2a9c1b.js:12:34)"
	s2 := "TypeError: x\n    at render (https://a/main.9b8c7d6e.js:99:1)"
	if Fingerprint(SourceBrowser, "TypeError", "x", s1) != Fingerprint(SourceBrowser, "TypeError", "x", s2) {
		t.Fatal("frame normalisation must drop bundle hash and line:col")
	}
}