exercism/elixir/log-parser/test/log_parser_test.exs

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2024-03-10 08:09:28 +00:00
defmodule LogParserTest do
use ExUnit.Case
describe "valid_line?/1" do
@tag task_id: 1
test "valid DEBUG message" do
assert LogParser.valid_line?("[DEBUG] response time 3ms") == true
end
@tag task_id: 1
test "valid INFO message" do
assert LogParser.valid_line?("[INFO] the latest information") == true
end
@tag task_id: 1
test "valid WARNING message" do
assert LogParser.valid_line?("[WARNING] something might be wrong") == true
end
@tag task_id: 1
test "valid ERROR message" do
assert LogParser.valid_line?("[ERROR] something really bad happened") == true
end
@tag task_id: 1
test "unknown level" do
assert LogParser.valid_line?("[BOB] something really bad happened") == false
end
@tag task_id: 1
test "line must start with level" do
assert LogParser.valid_line?("bad start [DEBUG] ") == false
end
@tag task_id: 1
test "level must be wrapped in square brackets" do
assert LogParser.valid_line?("ERROR something really bad happened") == false
end
@tag task_id: 1
test "level must be uppercase" do
assert LogParser.valid_line?("[warning] something might be wrong") == false
end
end
describe "split_line/1" do
@tag task_id: 2
test "splits into three sections" do
assert LogParser.split_line("[INFO] Start.<*>[INFO] Processing...<~~~>[INFO] Success.") == [
"[INFO] Start.",
"[INFO] Processing...",
"[INFO] Success."
]
end
@tag task_id: 2
test "symbols =, ~, *, and - can be freely mixed" do
assert LogParser.split_line(
"[DEBUG] Attempt nr 2<=>[DEBUG] Attempt nr 3<-*~*->[ERROR] Failed to send SMS."
) == [
"[DEBUG] Attempt nr 2",
"[DEBUG] Attempt nr 3",
"[ERROR] Failed to send SMS."
]
end
@tag task_id: 2
test "symbols other than =, ~, *, or - do not split" do
assert LogParser.split_line(
"[INFO] Attempt nr 1<=!>[INFO] Attempt nr 2< >[INFO] Attempt nr 3"
) == [
"[INFO] Attempt nr 1<=!>[INFO] Attempt nr 2< >[INFO] Attempt nr 3"
]
end
@tag task_id: 2
test "symbols between angular brackets aren't required" do
assert LogParser.split_line("[INFO] Attempt nr 1<>[INFO] Attempt nr 2") == [
"[INFO] Attempt nr 1",
"[INFO] Attempt nr 2"
]
end
@tag task_id: 2
test "angular brackets are required" do
assert LogParser.split_line("[ERROR] Failed to send SMS**[ERROR] Invalid API key.") == [
"[ERROR] Failed to send SMS**[ERROR] Invalid API key."
]
end
@tag task_id: 2
test "angular brackets must be closed required" do
assert LogParser.split_line("[ERROR] Failed to send SMS<**[ERROR] Invalid API key.") == [
"[ERROR] Failed to send SMS<**[ERROR] Invalid API key."
]
end
end
describe "remove_artifacts/1" do
@tag task_id: 3
test "removes a single 'end-of-line' followed by a line number" do
assert LogParser.remove_artifacts("[WARNING] Network Failure end-of-line27") ==
"[WARNING] Network Failure "
end
@tag task_id: 3
test "leaves other lines unchanged" do
assert LogParser.remove_artifacts("[DEBUG] Process started") ==
"[DEBUG] Process started"
end
@tag task_id: 3
test "removes multiple 'end-of-line's followed by line numbers" do
assert LogParser.remove_artifacts(
"[WARNING] end-of-line23033 Network Failure end-of-line27"
) == "[WARNING] Network Failure "
end
@tag task_id: 3
test "removes 'end-of-line' and line numbers even when not separated form the rest of the log by a space" do
assert LogParser.remove_artifacts("[WARNING]end-of-line23033Network Failureend-of-line27") ==
"[WARNING]Network Failure"
end
@tag task_id: 3
test "does not remove 'end-of-line' if not followed by a line number" do
assert LogParser.remove_artifacts("[INFO] end-of-line User disconnected end-of-lineXYZ") ==
"[INFO] end-of-line User disconnected end-of-lineXYZ"
end
@tag task_id: 3
test "does not remove 'end-of-line' if a number is separated by a space" do
assert LogParser.remove_artifacts("[DEBUG] Query runtime:end-of-line 6ms") ==
"[DEBUG] Query runtime:end-of-line 6ms"
end
@tag task_id: 3
test "is case-insensitive" do
assert LogParser.remove_artifacts("[DEBUG] END-of-LINE77 Process started End-Of-Line09") ==
"[DEBUG] Process started "
end
end
describe "tag_with_user_name/1" do
@tag task_id: 4
test "extracts user name and appends it to the line" do
assert LogParser.tag_with_user_name("[WARN] User James123 has exceeded storage space") ==
"[USER] James123 [WARN] User James123 has exceeded storage space"
end
@tag task_id: 4
test "leaves other lines unchanged" do
assert LogParser.tag_with_user_name("[DEBUG] Process started") ==
"[DEBUG] Process started"
end
@tag task_id: 4
test "multiple spaces can appear after the word 'User'" do
assert LogParser.tag_with_user_name("[INFO] User Bob9 reported post fxa3qa") ==
"[USER] Bob9 [INFO] User Bob9 reported post fxa3qa"
end
@tag task_id: 4
test "user name can be delimited by tabs" do
assert LogParser.tag_with_user_name(
"[ERROR] User\t!!!\tdoes not have a valid payment method"
) ==
"[USER] !!! [ERROR] User\t!!!\tdoes not have a valid payment method"
end
@tag task_id: 4
test "user name can be delimited by new lines" do
assert LogParser.tag_with_user_name("[DEBUG] Created User\nAlice908101\nat 14:02") ==
"[USER] Alice908101 [DEBUG] Created User\nAlice908101\nat 14:02"
end
@tag task_id: 4
test "user name can end with the end of the line" do
assert LogParser.tag_with_user_name("[INFO] New log in for User __JOHNNY__") ==
"[USER] __JOHNNY__ [INFO] New log in for User __JOHNNY__"
end
@tag task_id: 4
test "works for Ukrainian user names with emoji" do
assert LogParser.tag_with_user_name("[INFO] Promoted User АНАСТАСІЯ_🙂 to admin") ==
"[USER] АНАСТАСІЯ_🙂 [INFO] Promoted User АНАСТАСІЯ_🙂 to admin"
end
end
end