Fix bad indentation calculation in the console reporter

The problem came from the console reporter trying to provide a
fancy linebreaking (primarily for things like `SCENARIO` or the
BDD macros), so that new lines start with extra indentation if
the text being line broken starts as "{text}: ".

The console reporter did not properly take into account cases
where the ": " part would already be in a later line, in which
case it would ask for non-sensical level of indentation (larger
than single line length).

We fixed this by also enforcing that the special indentation case
only triggers if the ": " is found early enough in the line, so
that we also avoid degenerate cases like this:
```
blablabla: F
           a
           n
           c
           y
           .
           .
           .
```

Fixes #2309

src/catch2/reporters/catch_reporter_console.cpp

@@ -559,15 +559,37 @@ void ConsoleReporter::printOpenHeader(std::string const& _name) {
     }
 }
 
-// if string has a : in first line will set indent to follow it on
-// subsequent lines
 void ConsoleReporter::printHeaderString(std::string const& _string, std::size_t indent) {
-    std::size_t i = _string.find(": ");
-    if (i != std::string::npos)
-        i += 2;
-    else
-        i = 0;
-    stream << TextFlow::Column(_string).indent(indent + i).initialIndent(indent) << '\n';
+    // We want to get a bit fancy with line breaking here, so that subsequent
+    // lines start after ":" if one is present, e.g.
+    // ```
+    // blablabla: Fancy
+    //            linebreaking
+    // ```
+    // but we also want to avoid problems with overly long indentation causing
+    // the text to take up too many lines, e.g.
+    // ```
+    // blablabla: F
+    //            a
+    //            n
+    //            c
+    //            y
+    //            .
+    //            .
+    //            .
+    // ```
+    // So we limit the prefix indentation check to first quarter of the possible
+    // width
+    std::size_t idx = _string.find( ": " );
+    if ( idx != std::string::npos && idx < CATCH_CONFIG_CONSOLE_WIDTH / 4 ) {
+        idx += 2;
+    } else {
+        idx = 0;
+    }
+    stream << TextFlow::Column( _string )
+                  .indent( indent + idx )
+                  .initialIndent( indent )
+           << '\n';
 }
 
 struct SummaryColumn {

tests/SelfTest/Baselines/automake.sw.approved.txt

@@ -191,6 +191,7 @@ Nor would this
 :test-result: FAIL Regex string matcher
 :test-result: PASS Regression test #1
 :test-result: PASS Reporter's write listings to provided stream
+:test-result: PASS Reproducer for #2309 - a very long description past 80 chars (default console width) with a late colon : blablabla
 :test-result: PASS SUCCEED counts as a test pass
 :test-result: PASS SUCCEED does not require an argument
 :test-result: PASS Scenario: BDD tests requiring Fixtures to provide commonly-accessed data or methods

tests/SelfTest/Baselines/compact.sw.approved.txt

@@ -1449,6 +1449,7 @@ Reporters.tests.cpp:<line number>: passed: listingString, ContainsSubstring( "fa
     </SourceInfo>
   </TestCase>
 </MatchingTests>" ( contains: "fake test name" and contains: "fakeTestTag" ) with 1 message: 'Tested reporter: xml'
+Reporters.tests.cpp:<line number>: passed:
 Message.tests.cpp:<line number>: passed: with 1 message: 'this is a success'
 Message.tests.cpp:<line number>: passed:
 BDD.tests.cpp:<line number>: passed: before == 0 for: 0 == 0

tests/SelfTest/Baselines/console.std.approved.txt

@@ -1426,6 +1426,6 @@ due to unexpected exception with message:
   Why would you throw a std::string?
 
 ===============================================================================
-test cases:  372 |  295 passed |  70 failed |  7 failed as expected
-assertions: 2114 | 1958 passed | 129 failed | 27 failed as expected
+test cases:  373 |  296 passed |  70 failed |  7 failed as expected
+assertions: 2115 | 1959 passed | 129 failed | 27 failed as expected
 

tests/SelfTest/Baselines/console.sw.approved.txt

@@ -10231,6 +10231,15 @@ with expansion:
 with message:
   Tested reporter: xml
 
+-------------------------------------------------------------------------------
+Reproducer for #2309 - a very long description past 80 chars (default console
+width) with a late colon : blablabla
+-------------------------------------------------------------------------------
+Reporters.tests.cpp:<line number>
+...............................................................................
+
+Reporters.tests.cpp:<line number>: PASSED:
+
 -------------------------------------------------------------------------------
 SUCCEED counts as a test pass
 -------------------------------------------------------------------------------
@@ -17030,6 +17039,6 @@ Misc.tests.cpp:<line number>
 Misc.tests.cpp:<line number>: PASSED:
 
 ===============================================================================
-test cases:  372 |  279 passed |  86 failed |  7 failed as expected
-assertions: 2131 | 1958 passed | 146 failed | 27 failed as expected
+test cases:  373 |  280 passed |  86 failed |  7 failed as expected
+assertions: 2132 | 1959 passed | 146 failed | 27 failed as expected
 

tests/SelfTest/Baselines/junit.sw.approved.txt

@@ -1,7 +1,7 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <testsuitesloose text artifact
 >
-  <testsuite name="<exe-name>" errors="17" failures="129" tests="2131" hostname="tbd" time="{duration}" timestamp="{iso8601-timestamp}">
+  <testsuite name="<exe-name>" errors="17" failures="129" tests="2132" hostname="tbd" time="{duration}" timestamp="{iso8601-timestamp}">
     <properties>
       <property name="random-seed" value="1"/>
       <property name="filters" value="~[!nonportable]~[!benchmark]~[approvals] *"/>
@@ -1163,6 +1163,7 @@ Matchers.tests.cpp:<line number>
     <testcase classname="<exe-name>.global" name="Reporter's write listings to provided stream/xml reporter lists tags" time="{duration}" status="run"/>
     <testcase classname="<exe-name>.global" name="Reporter's write listings to provided stream/xml reporter lists reporters" time="{duration}" status="run"/>
     <testcase classname="<exe-name>.global" name="Reporter's write listings to provided stream/xml reporter lists tests" time="{duration}" status="run"/>
+    <testcase classname="<exe-name>.global" name="Reproducer for #2309 - a very long description past 80 chars (default console width) with a late colon : blablabla" time="{duration}" status="run"/>
     <testcase classname="<exe-name>.global" name="SUCCEED counts as a test pass" time="{duration}" status="run"/>
     <testcase classname="<exe-name>.global" name="SUCCEED does not require an argument" time="{duration}" status="run"/>
     <testcase classname="<exe-name>.Fixture" name="Scenario: BDD tests requiring Fixtures to provide commonly-accessed data or methods/Given: No operations precede me" time="{duration}" status="run"/>

tests/SelfTest/Baselines/sonarqube.sw.approved.txt

@@ -181,6 +181,7 @@
     <testCase name="Reporter's write listings to provided stream/xml reporter lists tags" duration="{duration}"/>
     <testCase name="Reporter's write listings to provided stream/xml reporter lists reporters" duration="{duration}"/>
     <testCase name="Reporter's write listings to provided stream/xml reporter lists tests" duration="{duration}"/>
+    <testCase name="Reproducer for #2309 - a very long description past 80 chars (default console width) with a late colon : blablabla" duration="{duration}"/>
     <testCase name="The default listing implementation write to provided stream/Listing tags" duration="{duration}"/>
     <testCase name="The default listing implementation write to provided stream/Listing reporters" duration="{duration}"/>
     <testCase name="The default listing implementation write to provided stream/Listing tests" duration="{duration}"/>

tests/SelfTest/Baselines/tap.sw.approved.txt

@@ -2590,6 +2590,8 @@ ok {test-number} - listingString, ContainsSubstring("fake reporter"s) for: "<?xm
 ok {test-number} - !(factories.empty()) for: !false
 # Reporter's write listings to provided stream
 ok {test-number} - listingString, ContainsSubstring( "fake test name"s ) && ContainsSubstring( "fakeTestTag"s ) for: "<?xml version="1.0" encoding="UTF-8"?> <MatchingTests>   <TestCase>     <Name>fake test name</Name>     <ClassName/>     <Tags>[fakeTestTag]</Tags>     <SourceInfo>       <File>fake-file.cpp</File>       <Line>123456789</Line>     </SourceInfo>   </TestCase> </MatchingTests>" ( contains: "fake test name" and contains: "fakeTestTag" ) with 1 message: 'Tested reporter: xml'
+# Reproducer for #2309 - a very long description past 80 chars (default console width) with a late colon : blablabla
+ok {test-number} -
 # SUCCEED counts as a test pass
 ok {test-number} - with 1 message: 'this is a success'
 # SUCCEED does not require an argument
@@ -4264,5 +4266,5 @@ ok {test-number} - q3 == 23. for: 23.0 == 23.0
 ok {test-number} -
 # xmlentitycheck
 ok {test-number} -
-1..2131
+1..2132
 

tests/SelfTest/Baselines/teamcity.sw.approved.txt

@@ -491,6 +491,8 @@ Matchers.tests.cpp:<line number>|nexpression failed|n  CHECK_THAT( testStringFor
 ##teamcity[testFinished name='Regression test #1' duration="{duration}"]
 ##teamcity[testStarted name='Reporter|'s write listings to provided stream']
 ##teamcity[testFinished name='Reporter|'s write listings to provided stream' duration="{duration}"]
+##teamcity[testStarted name='Reproducer for #2309 - a very long description past 80 chars (default console width) with a late colon : blablabla']
+##teamcity[testFinished name='Reproducer for #2309 - a very long description past 80 chars (default console width) with a late colon : blablabla' duration="{duration}"]
 ##teamcity[testStarted name='SUCCEED counts as a test pass']
 ##teamcity[testFinished name='SUCCEED counts as a test pass' duration="{duration}"]
 ##teamcity[testStarted name='SUCCEED does not require an argument']

tests/SelfTest/Baselines/xml.sw.approved.txt

@@ -12248,6 +12248,9 @@ All available test cases:
     </Section>
     <OverallResult success="true"/>
   </TestCase>
+  <TestCase name="Reproducer for #2309 - a very long description past 80 chars (default console width) with a late colon : blablabla" tags="[console-reporter]" filename="tests/<exe-name>/IntrospectiveTests/Reporters.tests.cpp" >
+    <OverallResult success="true"/>
+  </TestCase>
   <TestCase name="SUCCEED counts as a test pass" tags="[messages]" filename="tests/<exe-name>/UsageTests/Message.tests.cpp" >
     <OverallResult success="true"/>
   </TestCase>
@@ -20027,6 +20030,6 @@ loose text artifact
     </Section>
     <OverallResult success="true"/>
   </TestCase>
-  <OverallResults successes="1958" failures="146" expectedFailures="27"/>
-  <OverallResultsCases successes="279" failures="86" expectedFailures="7"/>
+  <OverallResults successes="1959" failures="146" expectedFailures="27"/>
+  <OverallResultsCases successes="280" failures="86" expectedFailures="7"/>
 </Catch2TestRun>

tests/SelfTest/IntrospectiveTests/Reporters.tests.cpp

@@ -107,3 +107,8 @@ TEST_CASE( "Reporter's write listings to provided stream", "[reporters]" ) {
         }
     }
 }
+
+
+TEST_CASE("Reproducer for #2309 - a very long description past 80 chars (default console width) with a late colon : blablabla", "[console-reporter]") {
+    SUCCEED();
+}