Switch 'make check' to be done via shelltestrunner

The embedding of tests in the Makefile works only for that is there
today - a few `--version` and `stinit -p` calls. For expanding the
test coverage, as much as it can be done for `mt`, let's use a proper
shell test runner. `shelltestrunner` is available in Debian/Ubuntu, so
it's likely to be available in other distributions too, and as such
should not be a big barrier to contribution.

.github/workflows/ci.yml

@@ -46,6 +46,9 @@ jobs:
       - name: Checkout
         uses: actions/checkout@v2
 
+      - name: Install dependencies
+        run: sudo apt-get install -yy shelltestrunner
+
       - name: Build the code
         run: make CFLAGS=-coverage
 

Makefile

@@ -87,13 +87,7 @@ distcheck: dist
 	test "$$numfiles" -eq 5
 
 check: $(PROGS)
-	echo Checking version output
-	./mt --version
-	./stinit --version
-	echo Checking parse status
-	./stinit -p -f stinit.def.examples
-	echo Checking complete stinit parsing
-	( ./stinit -v -v -p -f stinit.def.examples 2>&1 | grep -q 'Mode 1 definition: scsi2logical=1 can-bsr=1 auto-lock=0 two-fms=0 drive-buffering=1 buffer-writes read-ahead=1 async-writes=1 can-partitions=0 fast-eom=1 blocksize=0 sili=1   timeout=900  long-timeout=14400     density=0x44 compression=0' )
+	shelltest -DVERSION=$(VERSION) tests
 
 # This needs lcov installed, and it's useful for local testing.
 coverage: clean

tests/basic.test

@@ -0,0 +1,21 @@
+# Check --version works
+./mt --version
+>>> /VERSION/
+>>>= 0
+
+./mt -v
+>>> /VERSION/
+>>>= 0
+
+./stinit --version
+>>> /VERSION/
+>>>= 0
+
+# Check -h works
+./mt -h
+>>>2 /commands: weof, wset, eof/
+>>>= 0
+
+./stinit -h
+>>>2 /Usage: stinit/
+>>>= 0

tests/stinit-parsing.test

@@ -0,0 +1,9 @@
+# Check example file parsing
+./stinit -p -f stinit.def.examples
+>>>= 0
+
+# Checking complete stinit parsing
+./stinit -v -v -p -f stinit.def.examples
+>>> /No errors found./
+>>>2 /Mode 1 definition: scsi2logical=1 can-bsr=1 auto-lock=0 two-fms=0 drive-buffering=1 buffer-writes read-ahead=1 async-writes=1 can-partitions=0 fast-eom=1 blocksize=0 sili=1   timeout=900  long-timeout=14400     density=0x44 compression=0/
+>>>= 0