Supply test numbers instead of string

Use `endswith()` because the code would break for
`number_of_tests >= 10` (as `test_10` also contains `test_1`).

Author: JulianJvn

testing/acceptance_test.py

@@ -971,19 +971,19 @@ def test_calls_showall(self, pytester: Pytester, mock_timing) -> None:
         pytester.makepyfile(self.source)
         result = pytester.runpytest_inprocess("--durations=0")
         assert result.ret == 0
-        TestDurations.check_tests_in_output(result.stdout.lines, "23")
+        TestDurations.check_tests_in_output(result.stdout.lines, 2, 3)
 
     def test_calls_showall_verbose(self, pytester: Pytester, mock_timing) -> None:
         pytester.makepyfile(self.source)
         result = pytester.runpytest_inprocess("--durations=0", "-vv")
         assert result.ret == 0
-        TestDurations.check_tests_in_output(result.stdout.lines, "123")
+        TestDurations.check_tests_in_output(result.stdout.lines, 1, 2, 3)
 
     def test_calls_showall_durationsmin(self, pytester: Pytester, mock_timing) -> None:
         pytester.makepyfile(self.source)
         result = pytester.runpytest_inprocess("--durations=0", "--durations-min=0.015")
         assert result.ret == 0
-        TestDurations.check_tests_in_output(result.stdout.lines, "3")
+        TestDurations.check_tests_in_output(result.stdout.lines, 3)
 
     def test_calls_showall_durationsmin_verbose(
         self, pytester: Pytester, mock_timing
@@ -993,16 +993,22 @@ def test_calls_showall_durationsmin_verbose(
             "--durations=0", "--durations-min=0.015", "-vv"
         )
         assert result.ret == 0
-        TestDurations.check_tests_in_output(result.stdout.lines, "3")
+        TestDurations.check_tests_in_output(result.stdout.lines, 3)
 
     @staticmethod
-    def check_tests_in_output(lines: Sequence[str], expected_test_numbers: str) -> None:
-        found_test_numbers = "".join(
+    def check_tests_in_output(
+        lines: Sequence[str], *expected_test_numbers: int
+    ) -> None:
+        number_of_tests = 3
+        found_test_numbers = set(
             test_number
-            for test_number in "123"
-            if any(f"test_{test_number}" in line and " call " in line for line in lines)
+            for test_number in range(1, number_of_tests + 1)
+            if any(
+                line.endswith(f"test_{test_number}") and " call " in line
+                for line in lines
+            )
         )
-        assert found_test_numbers == expected_test_numbers
+        assert found_test_numbers == set(expected_test_numbers)
 
     def test_with_deselected(self, pytester: Pytester, mock_timing) -> None:
         pytester.makepyfile(self.source)