virshtest: Add support for testing commands read from input file and adapt alias tests

Add support for reading a file and passing it to virsh in 'batch' mode
so that multiple commands can be easily tested with one invocation of
virsh.

To show how it's used adapt the alias handling tests to be invoked all
at once.

As in batch mode the arguments are read from a string and separated
inside virsh, one test is kept separate to be parsed in argv mode.

Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>

tests/virshtest.c

@@ -561,6 +561,26 @@ mymain(void)
                    testIOThreadPin, NULL) != 0)
         ret = -1;
 
+# define DO_TEST_SCRIPT(testname_, testfilter, ...) \
+    { \
+        const char *testname = testname_; \
+        g_autofree char *infile = g_strdup_printf("%s/virshtestdata/%s.in", \
+                                                  abs_srcdir, testname); \
+        const char *myargv[] = { __VA_ARGS__, NULL, NULL }; \
+        const char **tmp = myargv; \
+        const struct testInfo info = { testname, testfilter, myargv, NULL }; \
+        g_autofree char *scriptarg = NULL; \
+        if (virFileReadAll(infile, 256 * 1024, &scriptarg) < 0) { \
+            fprintf(stderr, "\nfailed to load '%s'\n", infile); \
+            ret = -1; \
+        } \
+        while (*tmp) \
+            tmp++; \
+        *tmp = scriptarg; \
+        if (virTestRun(testname, testCompare, &info) < 0) \
+            ret = -1; \
+    } while (0);
+
     /* It's a bit awkward listing result before argument, but that's a
      * limitation of C99 vararg macros.  */
 # define DO_TEST(i, result, ...) \
@@ -644,11 +664,8 @@ mymain(void)
             "echo \t '-'\"-\" \t --shell \t a");
 
     /* Tests of alias handling.  */
-    DO_TEST(31, "hello\n", "echo", "--string", "hello");
-    DO_TEST(32, "hello\n", "echo --string hello");
+    DO_TEST_SCRIPT("echo-alias", NULL, VIRSH_DEFAULT);
     DO_TEST(33, "hello\n", "echo", "--str", "hello");
-    DO_TEST(34, "hello\n", "echo --str hello");
-    DO_TEST(35, "hello\n", "echo --hi");
 
     /* Tests of multiple commands.  */
     DO_TEST(36, "a\nb\n", " echo a; echo b;");

tests/virshtestdata/echo-alias.in

@@ -0,0 +1,3 @@
+echo --string hello
+echo --str hello
+echo --hi;

tests/virshtestdata/echo-alias.out

@@ -0,0 +1,3 @@
+hello
+hello
+hello