Initial commit

test/README.md

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+# Testing this extension
+This directory contains all the tests for this extension. The `sql` directory holds tests that are written as [SQLLogicTests](https://duckdb.org/dev/sqllogictest/intro.html). DuckDB aims to have most its tests in this format as SQL statements, so for the quack extension, this should probably be the goal too.
+
+The root makefile contains targets to build and run all of these tests. To run the SQLLogicTests:
+```bash
+make test
+```
+or 
+```bash
+make test_debug
+```

test/sql/quack.test

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+# name: test/sql/quack.test
+# description: test quack extension
+# group: [quack]
+
+# Before we load the extension, this will fail
+statement error
+SELECT quack('Sam');
+----
+Catalog Error: Scalar Function with name quack does not exist!
+
+# Require statement will ensure this test is run with this extension loaded
+require quack
+
+# Confirm the extension works
+query I
+SELECT quack('Sam');
+----
+Quack Sam 🐥
+
+query I
+SELECT quack_openssl_version('Michael') ILIKE 'Quack Michael, my linked OpenSSL version is OpenSSL%';
+----
+true