package blammo import ( "bytes" "testing" "time" ) func TestLineWriter(t *testing.T) { refTime := time.Date(2020, time.January, 13, 12, 26, 47, 999999, time.UTC) tests := []struct { name string event Event line string }{ { name: "empty event", event: Event{}, line: `0001-01-01T00:00:00Z d [] []`, }, { name: "just a time", event: Event{ Time: refTime, }, line: `2020-01-13T12:26:47Z d [] []`, }, { name: "root path only", event: Event{ Time: refTime, Path: NewPath("root"), }, line: `2020-01-13T12:26:47Z d [root] []`, }, { name: "child path", event: Event{ Time: refTime, Path: NewPath("root").Child("kid"), }, line: `2020-01-13T12:26:47Z d [root/kid] []`, }, { name: "another child path", event: Event{ Time: refTime, Path: NewPath("root").Child("kid").Child("fart"), }, line: `2020-01-13T12:26:47Z d [root/kid/fart] []`, }, { name: "a message", event: Event{ Time: refTime, Path: NewPath("root").Child("kid").Child("fart"), Text: "this is a message", }, line: `2020-01-13T12:26:47Z d [root/kid/fart] [] this is a message`, }, { name: "a message with an empty tag", event: Event{ Time: refTime, Path: NewPath("root").Child("kid").Child("fart"), Text: "this is a message", Tags: &Tags{key: "alert"}, }, line: `2020-01-13T12:26:47Z d [root/kid/fart] [alert] this is a message`, }, { name: "a message with two empty tags", event: Event{ Time: refTime, Path: NewPath("root").Child("kid").Child("fart"), Text: "this is a message", Tags: &Tags{ key: "zombo-dot-com", parent: &Tags{key: "alert"}, }, }, line: `2020-01-13T12:26:47Z d [root/kid/fart] [alert+zombo-dot-com] this is a message`, }, { name: "a message with an int tag", event: Event{ Time: refTime, Path: NewPath("root").Child("kid").Child("fart"), Text: "this is a message", Tags: &Tags{ key: "num-users", value: 15, }, }, line: `2020-01-13T12:26:47Z d [root/kid/fart] [num-users=15] this is a message`, }, { name: "a message with a variety of tags", event: Event{ Time: refTime, Path: NewPath("root").Child("kid").Child("fart"), Text: "this is a message", Tags: &Tags{ key: "num-users", value: 15, parent: &Tags{ key: "pi", value: 3.14, parent: &Tags{ key: "request-id", value: "b49d31c7-d3bb-4bd3-96fe-34e7c7d2b0a4", }, }, }, }, line: `2020-01-13T12:26:47Z d [root/kid/fart] [request-id=b49d31c7-d3bb-4bd3-96fe-34e7c7d2b0a4+pi=3.14+num-users=15] this is a message`, }, } for _, test := range tests { t.Run(test.name, func(t *testing.T) { var buf bytes.Buffer w := NewLineWriter(&buf) w.WriteEvent(&test.event) line := buf.String() if line != test.line { t.Log("expected line does not match observed line") t.Logf("expected line: '%s'", test.line) t.Logf("observed line: '%s'", line) t.Fail() } }) } }