std: refactor test-runner to no longer require tests to be exported (#9355)

# Description
Test runner now performs following actions in order to run tests:
* Module file is opened
* Public function with random name is added to the source code, this
function calls user-specified private function
* Modified module file is saved under random name in $nu.temp-path
* Modified module file is imported in subprocess, injected function is
called by the test runner
# User-Facing Changes
<!-- List of all changes that impact the user experience here. This
helps us keep track of breaking changes. -->
* Test functions no longer need to be exported
* test functions no longer need to reside in separate test_ files
* setup and teardown renamed to before-each and after-each respectively
* before-all and after-all functions added that run before all tests in
given module. This matches the behavior of test runners used by other
languages such as JUnit/TestNG or Mocha
# Tests + Formatting

# After Submitting

---------

Co-authored-by: Kamil <skelly37@protonmail.com>
Co-authored-by: amtoine <stevan.antoine@gmail.com>

crates/nu-std/tests/logger_tests/test_basic_commands.nu

@@ -42,47 +42,47 @@ def "assert message short" [
     assert str contains $output "test message"
 }
 
-export def test_critical [] {
+def test_critical [] {
     assert no message 99 critical
     assert message CRITICAL critical CRT
 }
 
-export def test_critical_short [] {
+def test_critical_short [] {
     assert message short CRITICAL critical C
 }
 
-export def test_error [] {
-    assert no message CRITICAL error 
+def test_error [] {
+    assert no message CRITICAL error
     assert message ERROR error ERR
 }
 
-export def test_error_short [] {
+def test_error_short [] {
     assert message short ERROR error E
 }
 
-export def test_warning [] {
-    assert no message ERROR warning 
+def test_warning [] {
+    assert no message ERROR warning
     assert message WARNING warning WRN
 }
 
-export def test_warning_short [] {
+def test_warning_short [] {
     assert message short WARNING warning W
 }
 
-export def test_info [] {
-    assert no message WARNING info 
+def test_info [] {
+    assert no message WARNING info
     assert message INFO info "INF" # INF has to be quoted, otherwise it is the `inf` float
 }
 
-export def test_info_short [] {
+def test_info_short [] {
     assert message short INFO info I
 }
 
-export def test_debug [] {
-    assert no message INFO debug 
+def test_debug [] {
+    assert no message INFO debug
     assert message DEBUG debug DBG
 }
 
-export def test_debug_short [] {
+def test_debug_short [] {
     assert message short DEBUG debug D
-}
+}

crates/nu-std/tests/logger_tests/test_log_custom.nu

@@ -22,20 +22,20 @@ def run-command [
     }  | complete | get --ignore-errors stderr
 }
 
-export def test_errors_during_deduction [] {
+def test_errors_during_deduction [] {
     assert str contains (run-command "DEBUG" "msg" "%MSG%" 25) "Cannot deduce log level prefix for given log level"
     assert str contains (run-command "DEBUG" "msg" "%MSG%" 25 --ansi (ansi red)) "Cannot deduce log level prefix for given log level"
     assert str contains (run-command "DEBUG" "msg" "%MSG%" 25 --level-prefix "abc") "Cannot deduce ansi for given log level"
 }
 
-export def test_valid_calls [] {
+def test_valid_calls [] {
     assert equal (run-command "DEBUG" "msg" "%MSG%" 25 --level-prefix "abc" --ansi (ansi default) | str trim --right) "msg"
     assert equal (run-command "DEBUG" "msg" "%LEVEL% %MSG%" 20 | str trim --right) $"($env.LOG_PREFIX.INFO) msg"
     assert equal (run-command "DEBUG" "msg" "%LEVEL% %MSG%" --level-prefix "abc" 20 | str trim --right) "abc msg"
     assert equal (run-command "INFO" "msg" "%ANSI_START%%LEVEL% %MSG%%ANSI_STOP%" $env.LOG_LEVEL.CRITICAL | str trim --right) $"($env.LOG_ANSI.CRITICAL)CRT msg(ansi reset)"
 }
 
-export def test_log_level_handling [] {
+def test_log_level_handling [] {
     assert equal (run-command "DEBUG" "msg" "%LEVEL% %MSG%" 20 | str trim --right) $"($env.LOG_PREFIX.INFO) msg"
     assert equal (run-command "WARNING" "msg" "%LEVEL% %MSG%" 20 | str trim --right) ""
-}
+}

crates/nu-std/tests/logger_tests/test_log_format_flag.nu

@@ -39,7 +39,7 @@ def "assert formatted" [
     assert equal ($output | str trim --right) (format-message $message $format $prefix $ansi)
 }
 
-export def "test_format_flag" [] {
+def "test_format_flag" [] {
     assert formatted "test" "25 %MSG% %ANSI_START% %LEVEL%%ANSI_STOP%" critical
     assert formatted "test" "25 %MSG% %ANSI_START% %LEVEL%%ANSI_STOP%" error
     assert formatted "test" "25 %MSG% %ANSI_START% %LEVEL%%ANSI_STOP%" warning
@@ -50,4 +50,4 @@ export def "test_format_flag" [] {
     assert formatted --short "test" "TEST %ANSI_START% %MSG%%ANSI_STOP%" warning
     assert formatted --short "test" "TEST %ANSI_START% %MSG%%ANSI_STOP%" info
     assert formatted --short "test" "TEST %ANSI_START% %MSG%%ANSI_STOP%" debug
-}
+}

crates/nu-std/tests/logger_tests/test_logger_env.nu

@@ -1,6 +1,6 @@
 use std *
 
-export def "test_env_log_ansi" [] {
+def test_env_log_ansi [] {
     assert equal $env.LOG_ANSI.CRITICAL (ansi red_bold)
     assert equal $env.LOG_ANSI.ERROR (ansi red)
     assert equal $env.LOG_ANSI.WARNING (ansi yellow)
@@ -8,7 +8,7 @@ export def "test_env_log_ansi" [] {
     assert equal $env.LOG_ANSI.DEBUG (ansi default_dimmed)
 }
 
-export def "test_env_log_level" [] {
+def test_env_log_level [] {
     assert equal $env.LOG_LEVEL.CRITICAL 50
     assert equal $env.LOG_LEVEL.ERROR 40
     assert equal $env.LOG_LEVEL.WARNING 30
@@ -16,7 +16,7 @@ export def "test_env_log_level" [] {
     assert equal $env.LOG_LEVEL.DEBUG 10
 }
 
-export def "test_env_log_prefix" [] {
+def test_env_log_prefix [] {
     assert equal $env.LOG_PREFIX.CRITICAL "CRT"
     assert equal $env.LOG_PREFIX.ERROR "ERR"
     assert equal $env.LOG_PREFIX.WARNING "WRN"
@@ -24,7 +24,7 @@ export def "test_env_log_prefix" [] {
     assert equal $env.LOG_PREFIX.DEBUG "DBG"
 }
 
-export def "test_env_log_short_prefix" [] {
+def test_env_log_short_prefix [] {
     assert equal $env.LOG_SHORT_PREFIX.CRITICAL "C"
     assert equal $env.LOG_SHORT_PREFIX.ERROR "E"
     assert equal $env.LOG_SHORT_PREFIX.WARNING "W"
@@ -32,6 +32,6 @@ export def "test_env_log_short_prefix" [] {
     assert equal $env.LOG_SHORT_PREFIX.DEBUG "D"
 }
 
-export def "test_env_log_format" [] {
+def test_env_log_format [] {
     assert equal $env.LOG_FORMAT $"%ANSI_START%%DATE%|%LEVEL%|(ansi u)%MSG%%ANSI_STOP%"
-}
+}