tests: use Git's test framework

This allows tests to run in parallel as well as letting us use "prove"
or another TAP harness to run the tests.

Git's test framework requires Git to be fully built before letting any
tests run, so add a new target to the top-level Makefile which builds
all of Git instead of just libgit.a and make the "test" target depend on
that.

Signed-off-by: John Keeping <john@keeping.me.uk>

tests/t0107-snapshot.sh

@@ -1,77 +1,76 @@
 #!/bin/sh
 
+test_description='Verify snapshot'
 . ./setup.sh
 
-prepare_tests "Verify snapshot"
-
-run_test 'get foo/snapshot/master.tar.gz' '
-	cgit_url "foo/snapshot/master.tar.gz" >trash/tmp
+test_expect_success 'get foo/snapshot/master.tar.gz' '
+	cgit_url "foo/snapshot/master.tar.gz" >tmp
 '
 
-run_test 'check html headers' '
-	head -n 1 trash/tmp |
+test_expect_success 'check html headers' '
+	head -n 1 tmp |
 	grep "Content-Type: application/x-gzip" &&
 
-	head -n 2 trash/tmp |
+	head -n 2 tmp |
 	grep "Content-Disposition: inline; filename=.master.tar.gz."
 '
 
-run_test 'strip off the header lines' '
-	tail -n +6 trash/tmp > trash/master.tar.gz
+test_expect_success 'strip off the header lines' '
+	tail -n +6 tmp > master.tar.gz
 '
 
-run_test 'verify gzip format' '
-	gunzip --test trash/master.tar.gz
+test_expect_success 'verify gzip format' '
+	gunzip --test master.tar.gz
 '
 
-run_test 'untar' '
-	rm -rf trash/master &&
-	tar -xf trash/master.tar.gz -C trash
+test_expect_success 'untar' '
+	rm -rf master &&
+	tar -xf master.tar.gz
 '
 
-run_test 'count files' '
-	c=$(ls -1 trash/master/ | wc -l) &&
-	test $c = 5
+test_expect_success 'count files' '
+	ls master/ >output &&
+	test_line_count = 5 output
 '
 
-run_test 'verify untarred file-5' '
-	grep "^5$" trash/master/file-5 &&
-	test $(cat trash/master/file-5 | wc -l) = 1
+test_expect_success 'verify untarred file-5' '
+	grep "^5$" master/file-5 &&
+	test_line_count = 1 master/file-5
 '
 
-run_test 'get foo/snapshot/master.zip' '
-	cgit_url "foo/snapshot/master.zip" >trash/tmp
+test_expect_success 'get foo/snapshot/master.zip' '
+	cgit_url "foo/snapshot/master.zip" >tmp
 '
 
-run_test 'check HTML headers (zip)' '
-	head -n 1 trash/tmp |
+test_expect_success 'check HTML headers (zip)' '
+	head -n 1 tmp |
 	grep "Content-Type: application/x-zip" &&
 
-	head -n 2 trash/tmp |
+	head -n 2 tmp |
 	grep "Content-Disposition: inline; filename=.master.zip."
 '
 
-run_test 'strip off the header lines (zip)' '
-	tail -n +6 trash/tmp >trash/master.zip
+test_expect_success 'strip off the header lines (zip)' '
+	tail -n +6 tmp >master.zip
 '
 
-run_test 'verify zip format' '
-	unzip -t trash/master.zip
+test_expect_success 'verify zip format' '
+	unzip -t master.zip
 '
 
-run_test 'unzip' '
-	rm -rf trash/master &&
-	unzip trash/master.zip -d trash
+test_expect_success 'unzip' '
+	rm -rf master &&
+	unzip master.zip
 '
 
-run_test 'count files (zip)' '
-	c=$(ls -1 trash/master/ | wc -l) &&
-	test $c = 5
+test_expect_success 'count files (zip)' '
+	ls master/ >output &&
+	test_line_count = 5 output
 '
 
-run_test 'verify unzipped file-5' '
-	 grep "^5$" trash/master/file-5 &&
-	 test $(cat trash/master/file-5 | wc -l) = 1
+test_expect_success 'verify unzipped file-5' '
+	grep "^5$" master/file-5 &&
+	test_line_count = 1 master/file-5
 '
 
-tests_done
+test_done