virstoragetest: Rework TEST_LOOKUP* cases to work on fake backing chain

Rather than using 'qemu-img' and rewriting the chain we can use fake
data and few empty files to ensure the same level of coverage. This is
possible since we've already tested that the metadata parsing from files
works properly and the only thing we are testing here is that the
symlink resolution works properly.

Additionally after the refactor of 'virstoragetest' is complete
additional tests on real data will be added.

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

diff --git a/tests/virstoragetest.c b/tests/virstoragetest.c
index a3f9c537e5cd35d4e0abef081400439bd61d1885..299b16e1198733d7b71ab01fa68ec82a4e8de4c2 100644 (file)
--- a/tests/virstoragetest.c
+++ b/tests/virstoragetest.c
@@ -499,10 +499,11 @@ mymain(void)
     struct testLookupData data2;
     struct testPathRelativeBacking data4;
     struct testBackingParseData data5;
-    virStorageSource *chain2; /* short for chain->backingStore */
-    virStorageSource *chain3; /* short for chain2->backingStore */
+    virStorageSource fakeChain[4];
+    virStorageSource *chain = &fakeChain[0];
+    virStorageSource *chain2 = &fakeChain[1];
+    virStorageSource *chain3 = &fakeChain[2];
     g_autoptr(virCommand) cmd = NULL;
-    g_autoptr(virStorageSource) chain = NULL;
 
     if (storageRegisterAll() < 0)
        return EXIT_FAILURE;
@@ -622,22 +623,29 @@ mymain(void)
     /* Behavior of an infinite loop chain */
     TEST_CHAIN("qcow2-qcow2_infinite-mutual", abswrap, VIR_STORAGE_FILE_QCOW2, EXP_FAIL);
 
-    /* Rewrite wrap and qcow2 back to 3-deep chain, absolute backing */
-    virCommandFree(cmd);
-    cmd = virCommandNewArgList(qemuimg, "rebase", "-u", "-f", "qcow2",
-                               "-F", "raw", "-b", absraw, "qcow2", NULL);
-    if (virCommandRun(cmd, NULL) < 0)
-        ret = -1;
-
-    /* Test behavior of chain lookups, absolute backing from relative start */
-    chain = testStorageFileGetMetadata("wrap", VIR_STORAGE_FILE_QCOW2,
-                                       -1, -1);
-    if (!chain) {
-        ret = -1;
+    /* setup data for backing chain lookup testing */
+    if (chdir(abs_srcdir "/virstoragetestdata/lookup") < 0) {
+        fprintf(stderr, "unable to test relative backing chains\n");
         goto cleanup;
     }
-    chain2 = chain->backingStore;
-    chain3 = chain2->backingStore;
+
+    memset(fakeChain, 0, sizeof(fakeChain));
+    fakeChain[0].backingStore = &fakeChain[1];
+    fakeChain[1].backingStore = &fakeChain[2];
+    fakeChain[2].backingStore = &fakeChain[3];
+
+    fakeChain[0].type = VIR_STORAGE_TYPE_FILE;
+    fakeChain[1].type = VIR_STORAGE_TYPE_FILE;
+    fakeChain[2].type = VIR_STORAGE_TYPE_FILE;
+
+    fakeChain[0].format = VIR_STORAGE_FILE_QCOW2;
+    fakeChain[1].format = VIR_STORAGE_FILE_QCOW2;
+    fakeChain[2].format = VIR_STORAGE_FILE_RAW;
+
+    /* backing chain with relative start and absolute backing paths */
+    fakeChain[0].path = (char *) "wrap";
+    fakeChain[1].path = (char *) abs_srcdir "/virstoragetestdata/lookup/qcow2";
+    fakeChain[2].path = (char *) abs_srcdir "/virstoragetestdata/lookup/raw";
 
 #define TEST_LOOKUP_TARGET(id, target, from, name, index, meta, parent) \
     do { \
@@ -654,111 +662,87 @@ mymain(void)
     TEST_LOOKUP(2, NULL, "wrap", chain, NULL);
     TEST_LOOKUP(3, chain, "wrap", NULL, NULL);
     TEST_LOOKUP(4, chain2, "wrap", NULL, NULL);
-    TEST_LOOKUP(5, NULL, abswrap, chain, NULL);
-    TEST_LOOKUP(6, chain, abswrap, NULL, NULL);
-    TEST_LOOKUP(7, chain2, abswrap, NULL, NULL);
+    TEST_LOOKUP(5, NULL, abs_srcdir "/virstoragetestdata/lookup/wrap", chain, NULL);
+    TEST_LOOKUP(6, chain, abs_srcdir "/virstoragetestdata/lookup/wrap", NULL, NULL);
+    TEST_LOOKUP(7, chain2, abs_srcdir "/virstoragetestdata/lookup/wrap", NULL, NULL);
     TEST_LOOKUP(8, NULL, "qcow2", chain2, chain);
     TEST_LOOKUP(9, chain, "qcow2",  chain2, chain);
     TEST_LOOKUP(10, chain2, "qcow2", NULL, NULL);
     TEST_LOOKUP(11, chain3, "qcow2", NULL, NULL);
-    TEST_LOOKUP(12, NULL, absqcow2, chain2, chain);
-    TEST_LOOKUP(13, chain, absqcow2, chain2, chain);
-    TEST_LOOKUP(14, chain2, absqcow2, NULL, NULL);
-    TEST_LOOKUP(15, chain3, absqcow2, NULL, NULL);
+    TEST_LOOKUP(12, NULL, abs_srcdir "/virstoragetestdata/lookup/qcow2", chain2, chain);
+    TEST_LOOKUP(13, chain, abs_srcdir "/virstoragetestdata/lookup/qcow2", chain2, chain);
+    TEST_LOOKUP(14, chain2, abs_srcdir "/virstoragetestdata/lookup/qcow2", NULL, NULL);
+    TEST_LOOKUP(15, chain3, abs_srcdir "/virstoragetestdata/lookup/qcow2", NULL, NULL);
     TEST_LOOKUP(16, NULL, "raw", chain3, chain2);
     TEST_LOOKUP(17, chain, "raw", chain3, chain2);
     TEST_LOOKUP(18, chain2, "raw", chain3, chain2);
     TEST_LOOKUP(19, chain3, "raw", NULL, NULL);
-    TEST_LOOKUP(20, NULL, absraw, chain3, chain2);
-    TEST_LOOKUP(21, chain, absraw, chain3, chain2);
-    TEST_LOOKUP(22, chain2, absraw, chain3, chain2);
-    TEST_LOOKUP(23, chain3, absraw, NULL, NULL);
+    TEST_LOOKUP(20, NULL, abs_srcdir "/virstoragetestdata/lookup/raw", chain3, chain2);
+    TEST_LOOKUP(21, chain, abs_srcdir "/virstoragetestdata/lookup/raw", chain3, chain2);
+    TEST_LOOKUP(22, chain2, abs_srcdir "/virstoragetestdata/lookup/raw", chain3, chain2);
+    TEST_LOOKUP(23, chain3, abs_srcdir "/virstoragetestdata/lookup/raw", NULL, NULL);
     TEST_LOOKUP(24, NULL, NULL, chain3, chain2);
     TEST_LOOKUP(25, chain, NULL, chain3, chain2);
     TEST_LOOKUP(26, chain2, NULL, chain3, chain2);
     TEST_LOOKUP(27, chain3, NULL, NULL, NULL);
 
-    /* Rewrite wrap and qcow2 back to 3-deep chain, relative backing */
-    virCommandFree(cmd);
-    cmd = virCommandNewArgList(qemuimg, "rebase", "-u", "-f", "qcow2",
-                               "-F", "raw", "-b", "raw", "qcow2", NULL);
-    if (virCommandRun(cmd, NULL) < 0)
-        ret = -1;
+    /* relative backing, absolute start */
+    fakeChain[0].path = (char *) abs_srcdir "/virstoragetestdata/lookup/wrap";
 
-    virCommandFree(cmd);
-    cmd = virCommandNewArgList(qemuimg, "rebase", "-u", "-f", "qcow2",
-                               "-F", "qcow2", "-b", "qcow2", "wrap", NULL);
-    if (virCommandRun(cmd, NULL) < 0)
-        ret = -1;
-
-    /* Test behavior of chain lookups, relative backing from absolute start */
-    virObjectUnref(chain);
-    chain = testStorageFileGetMetadata(abswrap, VIR_STORAGE_FILE_QCOW2, -1, -1);
-    if (!chain) {
-        ret = -1;
-        goto cleanup;
-    }
-    chain2 = chain->backingStore;
-    chain3 = chain2->backingStore;
+    fakeChain[1].relPath = (char *) "qcow2";
+    fakeChain[2].relPath = (char *) "raw";
 
     TEST_LOOKUP(28, NULL, "bogus", NULL, NULL);
     TEST_LOOKUP(29, chain, "bogus", NULL, NULL);
     TEST_LOOKUP(30, NULL, "wrap", chain, NULL);
     TEST_LOOKUP(31, chain, "wrap", NULL, NULL);
     TEST_LOOKUP(32, chain2, "wrap", NULL, NULL);
-    TEST_LOOKUP(33, NULL, abswrap, chain, NULL);
-    TEST_LOOKUP(34, chain, abswrap, NULL, NULL);
-    TEST_LOOKUP(35, chain2, abswrap, NULL, NULL);
+    TEST_LOOKUP(33, NULL, abs_srcdir "/virstoragetestdata/lookup/wrap", chain, NULL);
+    TEST_LOOKUP(34, chain, abs_srcdir "/virstoragetestdata/lookup/wrap", NULL, NULL);
+    TEST_LOOKUP(35, chain2, abs_srcdir "/virstoragetestdata/lookup/wrap", NULL, NULL);
     TEST_LOOKUP(36, NULL, "qcow2", chain2, chain);
     TEST_LOOKUP(37, chain, "qcow2", chain2, chain);
     TEST_LOOKUP(38, chain2, "qcow2", NULL, NULL);
     TEST_LOOKUP(39, chain3, "qcow2", NULL, NULL);
-    TEST_LOOKUP(40, NULL, absqcow2, chain2, chain);
-    TEST_LOOKUP(41, chain, absqcow2, chain2, chain);
-    TEST_LOOKUP(42, chain2, absqcow2, NULL, NULL);
-    TEST_LOOKUP(43, chain3, absqcow2, NULL, NULL);
+    TEST_LOOKUP(40, NULL, abs_srcdir "/virstoragetestdata/lookup/qcow2", chain2, chain);
+    TEST_LOOKUP(41, chain, abs_srcdir "/virstoragetestdata/lookup/qcow2", chain2, chain);
+    TEST_LOOKUP(42, chain2, abs_srcdir "/virstoragetestdata/lookup/qcow2", NULL, NULL);
+    TEST_LOOKUP(43, chain3, abs_srcdir "/virstoragetestdata/lookup/qcow2", NULL, NULL);
     TEST_LOOKUP(44, NULL, "raw", chain3, chain2);
     TEST_LOOKUP(45, chain, "raw", chain3, chain2);
     TEST_LOOKUP(46, chain2, "raw", chain3, chain2);
     TEST_LOOKUP(47, chain3, "raw", NULL, NULL);
-    TEST_LOOKUP(48, NULL, absraw, chain3, chain2);
-    TEST_LOOKUP(49, chain, absraw, chain3, chain2);
-    TEST_LOOKUP(50, chain2, absraw, chain3, chain2);
-    TEST_LOOKUP(51, chain3, absraw, NULL, NULL);
+    TEST_LOOKUP(48, NULL, abs_srcdir "/virstoragetestdata/lookup/raw", chain3, chain2);
+    TEST_LOOKUP(49, chain, abs_srcdir "/virstoragetestdata/lookup/raw", chain3, chain2);
+    TEST_LOOKUP(50, chain2, abs_srcdir "/virstoragetestdata/lookup/raw", chain3, chain2);
+    TEST_LOOKUP(51, chain3, abs_srcdir "/virstoragetestdata/lookup/raw", NULL, NULL);
     TEST_LOOKUP(52, NULL, NULL, chain3, chain2);
     TEST_LOOKUP(53, chain, NULL, chain3, chain2);
     TEST_LOOKUP(54, chain2, NULL, chain3, chain2);
     TEST_LOOKUP(55, chain3, NULL, NULL, NULL);
 
     /* Use link to wrap with cross-directory relative backing */
-    virCommandFree(cmd);
-    cmd = virCommandNewArgList(qemuimg, "rebase", "-u", "-f", "qcow2",
-                               "-F", "qcow2", "-b", "../qcow2", "wrap", NULL);
-    if (virCommandRun(cmd, NULL) < 0)
-        ret = -1;
+    fakeChain[0].path = (char *) abs_srcdir "/virstoragetestdata/lookup/sub/link2";
 
-    /* Test behavior of chain lookups, relative backing */
-    virObjectUnref(chain);
-    chain = testStorageFileGetMetadata("sub/link2", VIR_STORAGE_FILE_QCOW2,
-                                       -1, -1);
-    if (!chain) {
-        ret = -1;
-        goto cleanup;
-    }
-    chain2 = chain->backingStore;
-    chain3 = chain2->backingStore;
+    fakeChain[1].relPath = (char *) "../qcow2";
+    fakeChain[2].relPath = (char *) "raw";
 
     TEST_LOOKUP(56, NULL, "bogus", NULL, NULL);
     TEST_LOOKUP(57, NULL, "sub/link2", chain, NULL);
     TEST_LOOKUP(58, NULL, "wrap", chain, NULL);
-    TEST_LOOKUP(59, NULL, abswrap, chain, NULL);
+    TEST_LOOKUP(59, NULL, abs_srcdir "/virstoragetestdata/lookup/wrap", chain, NULL);
     TEST_LOOKUP(60, NULL, "../qcow2", chain2, chain);
     TEST_LOOKUP(61, NULL, "qcow2", NULL, NULL);
-    TEST_LOOKUP(62, NULL, absqcow2, chain2, chain);
+    TEST_LOOKUP(62, NULL, abs_srcdir "/virstoragetestdata/lookup/qcow2", chain2, chain);
     TEST_LOOKUP(63, NULL, "raw", chain3, chain2);
-    TEST_LOOKUP(64, NULL, absraw, chain3, chain2);
+    TEST_LOOKUP(64, NULL, abs_srcdir "/virstoragetestdata/lookup/raw", chain3, chain2);
     TEST_LOOKUP(65, NULL, NULL, chain3, chain2);
 
+    /* index lookup */
+    fakeChain[0].id = 0;
+    fakeChain[1].id = 1;
+    fakeChain[2].id = 2;
+
     TEST_LOOKUP_TARGET(66, "vda", NULL, "bogus[1]", 0, NULL, NULL);
     TEST_LOOKUP_TARGET(67, "vda", NULL, "vda[-1]", 0, NULL, NULL);
     TEST_LOOKUP_TARGET(68, "vda", NULL, "vda[1][1]", 0, NULL, NULL);

diff --git a/tests/virstoragetestdata/lookup/qcow2 b/tests/virstoragetestdata/lookup/qcow2
new file mode 100644 (file)
index 0000000..e69de29

diff --git a/tests/virstoragetestdata/lookup/raw b/tests/virstoragetestdata/lookup/raw
new file mode 100644 (file)
index 0000000..e69de29

diff --git a/tests/virstoragetestdata/lookup/sub/link2 b/tests/virstoragetestdata/lookup/sub/link2
new file mode 120000 (symlink)
index 0000000..5efbc33
--- /dev/null
+++ b/tests/virstoragetestdata/lookup/sub/link2
@@ -0,0 +1 @@
+../wrap
\ No newline at end of file

diff --git a/tests/virstoragetestdata/lookup/wrap b/tests/virstoragetestdata/lookup/wrap
new file mode 100644 (file)
index 0000000..e69de29