[ASTERIXDB-2024][TEST] Test fwk comment patterns

Update the test framework to match comment patterns only at head of
line, to avoid truncating other instances of these characters i.e.
http://foobar.com -> http:

Change-Id: I4c317ccee242bd5fa2f5ec5bed85a69f0a47cf11
Reviewed-on: https://asterix-gerrit.ics.uci.edu/1919
Reviewed-by: Michael Blow <mblow@apache.org>
Integration-Tests: Michael Blow <mblow@apache.org>
Tested-by: Michael Blow <mblow@apache.org>
diff --git a/asterixdb/asterix-app/src/test/java/org/apache/asterix/test/common/TestExecutor.java b/asterixdb/asterix-app/src/test/java/org/apache/asterix/test/common/TestExecutor.java
index 1079832..1c29e86 100644
--- a/asterixdb/asterix-app/src/test/java/org/apache/asterix/test/common/TestExecutor.java
+++ b/asterixdb/asterix-app/src/test/java/org/apache/asterix/test/common/TestExecutor.java
@@ -105,8 +105,8 @@
     private static final long MAX_URL_LENGTH = 2000l;
     private static final Pattern JAVA_BLOCK_COMMENT_PATTERN = Pattern.compile("/\\*.*\\*/",
             Pattern.MULTILINE | Pattern.DOTALL);
-    private static final Pattern JAVA_LINE_COMMENT_PATTERN = Pattern.compile("//.*$", Pattern.MULTILINE);
-    private static final Pattern SHELL_LINE_COMMENT_PATTERN = Pattern.compile("#.*$", Pattern.MULTILINE);
+    private static final Pattern JAVA_LINE_COMMENT_PATTERN = Pattern.compile("^//.*$", Pattern.MULTILINE);
+    private static final Pattern SHELL_LINE_COMMENT_PATTERN = Pattern.compile("^#.*$", Pattern.MULTILINE);
     private static final Pattern REGEX_LINES_PATTERN = Pattern.compile("^(-)?/(.*)/([im]*)$");
     private static final Pattern POLL_TIMEOUT_PATTERN = Pattern.compile("polltimeoutsecs=(\\d+)(\\D|$)",
             Pattern.MULTILINE);