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-rwxr-xr-xt/t9011-svn-da.sh248
1 files changed, 248 insertions, 0 deletions
diff --git a/t/t9011-svn-da.sh b/t/t9011-svn-da.sh
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+++ b/t/t9011-svn-da.sh
@@ -0,0 +1,248 @@
+#!/bin/sh
+
+test_description='test parsing of svndiff0 files
+
+Using the "test-svn-fe -d" helper, check that svn-fe correctly
+interprets deltas using various facilities (some from the spec,
+some only learned from practice).
+'
+. ./test-lib.sh
+
+>empty
+printf foo >preimage
+
+test_expect_success 'reject empty delta' '
+ test_must_fail test-svn-fe -d preimage empty 0
+'
+
+test_expect_success 'delta can empty file' '
+ printf "SVNQ" | q_to_nul >clear.delta &&
+ test-svn-fe -d preimage clear.delta 4 >actual &&
+ test_cmp empty actual
+'
+
+test_expect_success 'reject svndiff2' '
+ printf "SVN\002" >bad.filetype &&
+ test_must_fail test-svn-fe -d preimage bad.filetype 4
+'
+
+test_expect_success 'one-window empty delta' '
+ printf "SVNQ%s" "QQQQQ" | q_to_nul >clear.onewindow &&
+ test-svn-fe -d preimage clear.onewindow 9 >actual &&
+ test_cmp empty actual
+'
+
+test_expect_success 'reject incomplete window header' '
+ printf "SVNQ%s" "QQQQQ" | q_to_nul >clear.onewindow &&
+ printf "SVNQ%s" "QQ" | q_to_nul >clear.partialwindow &&
+ test_must_fail test-svn-fe -d preimage clear.onewindow 6 &&
+ test_must_fail test-svn-fe -d preimage clear.partialwindow 6
+'
+
+test_expect_success 'reject declared delta longer than actual delta' '
+ printf "SVNQ%s" "QQQQQ" | q_to_nul >clear.onewindow &&
+ printf "SVNQ%s" "QQ" | q_to_nul >clear.partialwindow &&
+ test_must_fail test-svn-fe -d preimage clear.onewindow 14 &&
+ test_must_fail test-svn-fe -d preimage clear.partialwindow 9
+'
+
+test_expect_success 'two-window empty delta' '
+ printf "SVNQ%s%s" "QQQQQ" "QQQQQ" | q_to_nul >clear.twowindow &&
+ test-svn-fe -d preimage clear.twowindow 14 >actual &&
+ test_must_fail test-svn-fe -d preimage clear.twowindow 13 &&
+ test_cmp empty actual
+'
+
+test_expect_success 'noisy zeroes' '
+ printf "SVNQ%s" \
+ "RRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRQQQQQ" |
+ tr R "\200" |
+ q_to_nul >clear.noisy &&
+ len=$(wc -c <clear.noisy) &&
+ test-svn-fe -d preimage clear.noisy $len &&
+ test_cmp empty actual
+'
+
+test_expect_success 'reject variable-length int in magic' '
+ printf "SVNRQ" | tr R "\200" | q_to_nul >clear.badmagic &&
+ test_must_fail test-svn-fe -d preimage clear.badmagic 5
+'
+
+test_expect_success 'reject truncated integer' '
+ printf "SVNQ%s%s" "QQQQQ" "QQQQRRQ" |
+ tr R "\200" |
+ q_to_nul >clear.fullint &&
+ printf "SVNQ%s%s" "QQQQQ" "QQQQRR" |
+ tr RT "\201" |
+ q_to_nul >clear.partialint &&
+ test_must_fail test-svn-fe -d preimage clear.fullint 15 &&
+ test-svn-fe -d preimage clear.fullint 16 &&
+ test_must_fail test-svn-fe -d preimage clear.partialint 15
+'
+
+test_expect_success 'nonempty (but unused) preimage view' '
+ printf "SVNQ%b" "Q\003QQQ" | q_to_nul >clear.readpreimage &&
+ test-svn-fe -d preimage clear.readpreimage 9 >actual &&
+ test_cmp empty actual
+'
+
+test_expect_success 'preimage view: right endpoint cannot backtrack' '
+ printf "SVNQ%b%b" "Q\003QQQ" "Q\002QQQ" |
+ q_to_nul >clear.backtrack &&
+ test_must_fail test-svn-fe -d preimage clear.backtrack 14
+'
+
+test_expect_success 'preimage view: left endpoint can advance' '
+ printf "SVNQ%b%b" "Q\003QQQ" "\001\002QQQ" |
+ q_to_nul >clear.preshrink &&
+ printf "SVNQ%b%b" "Q\003QQQ" "\001\001QQQ" |
+ q_to_nul >clear.shrinkbacktrack &&
+ test-svn-fe -d preimage clear.preshrink 14 >actual &&
+ test_must_fail test-svn-fe -d preimage clear.shrinkbacktrack 14 &&
+ test_cmp empty actual
+'
+
+test_expect_success 'preimage view: offsets compared by value' '
+ printf "SVNQ%b%b" "\001\001QQQ" "\0200Q\003QQQ" |
+ q_to_nul >clear.noisybacktrack &&
+ printf "SVNQ%b%b" "\001\001QQQ" "\0200\001\002QQQ" |
+ q_to_nul >clear.noisyadvance &&
+ test_must_fail test-svn-fe -d preimage clear.noisybacktrack 15 &&
+ test-svn-fe -d preimage clear.noisyadvance 15 &&
+ test_cmp empty actual
+'
+
+test_expect_success 'preimage view: reject truncated preimage' '
+ printf "SVNQ%b" "\010QQQQ" | q_to_nul >clear.lateemptyread &&
+ printf "SVNQ%b" "\010\001QQQ" | q_to_nul >clear.latenonemptyread &&
+ printf "SVNQ%b" "\001\010QQQ" | q_to_nul >clear.longread &&
+ test_must_fail test-svn-fe -d preimage clear.lateemptyread 9 &&
+ test_must_fail test-svn-fe -d preimage clear.latenonemptyread 9 &&
+ test_must_fail test-svn-fe -d preimage clear.longread 9
+'
+
+test_expect_success 'forbid unconsumed inline data' '
+ printf "SVNQ%b%s%b%s" "QQQQ\003" "bar" "QQQQ\001" "x" |
+ q_to_nul >inline.clear &&
+ test_must_fail test-svn-fe -d preimage inline.clear 18 >actual
+'
+
+test_expect_success 'reject truncated inline data' '
+ printf "SVNQ%b%s" "QQQQ\003" "b" | q_to_nul >inline.trunc &&
+ test_must_fail test-svn-fe -d preimage inline.trunc 10
+'
+
+test_expect_success 'reject truncated inline data (after instruction section)' '
+ printf "SVNQ%b%b%s" "QQ\001\001\003" "\0201" "b" | q_to_nul >insn.trunc &&
+ test_must_fail test-svn-fe -d preimage insn.trunc 11
+'
+
+test_expect_success 'copyfrom_data' '
+ echo hi >expect &&
+ printf "SVNQ%b%b%b" "QQ\003\001\003" "\0203" "hi\n" | q_to_nul >copydat &&
+ test-svn-fe -d preimage copydat 13 >actual &&
+ test_cmp expect actual
+'
+
+test_expect_success 'multiple copyfrom_data' '
+ echo hi >expect &&
+ printf "SVNQ%b%b%b%b%b" "QQ\003\002\003" "\0201\0202" "hi\n" \
+ "QQQ\002Q" "\0200Q" | q_to_nul >copy.multi &&
+ len=$(wc -c <copy.multi) &&
+ test-svn-fe -d preimage copy.multi $len >actual &&
+ test_cmp expect actual
+'
+
+test_expect_success 'incomplete multiple insn' '
+ printf "SVNQ%b%b%b" "QQ\003\002\003" "\0203\0200" "hi\n" |
+ q_to_nul >copy.partial &&
+ len=$(wc -c <copy.partial) &&
+ test_must_fail test-svn-fe -d preimage copy.partial $len
+'
+
+test_expect_success 'catch attempt to copy missing data' '
+ printf "SVNQ%b%b%s%b%s" "QQ\002\002\001" "\0201\0201" "X" \
+ "QQQQ\002" "YZ" |
+ q_to_nul >copy.incomplete &&
+ len=$(wc -c <copy.incomplete) &&
+ test_must_fail test-svn-fe -d preimage copy.incomplete $len
+'
+
+test_expect_success 'copyfrom target to repeat data' '
+ printf foofoo >expect &&
+ printf "SVNQ%b%b%s" "QQ\006\004\003" "\0203\0100\003Q" "foo" |
+ q_to_nul >copytarget.repeat &&
+ len=$(wc -c <copytarget.repeat) &&
+ test-svn-fe -d preimage copytarget.repeat $len >actual &&
+ test_cmp expect actual
+'
+
+test_expect_success 'copyfrom target out of order' '
+ printf foooof >expect &&
+ printf "SVNQ%b%b%s" \
+ "QQ\006\007\003" "\0203\0101\002\0101\001\0101Q" "foo" |
+ q_to_nul >copytarget.reverse &&
+ len=$(wc -c <copytarget.reverse) &&
+ test-svn-fe -d preimage copytarget.reverse $len >actual &&
+ test_cmp expect actual
+'
+
+test_expect_success 'catch copyfrom future' '
+ printf "SVNQ%b%b%s" "QQ\004\004\003" "\0202\0101\002\0201" "XYZ" |
+ q_to_nul >copytarget.infuture &&
+ len=$(wc -c <copytarget.infuture) &&
+ test_must_fail test-svn-fe -d preimage copytarget.infuture $len
+'
+
+test_expect_success 'copy to sustain' '
+ printf XYXYXYXYXYXZ >expect &&
+ printf "SVNQ%b%b%s" "QQ\014\004\003" "\0202\0111Q\0201" "XYZ" |
+ q_to_nul >copytarget.sustain &&
+ len=$(wc -c <copytarget.sustain) &&
+ test-svn-fe -d preimage copytarget.sustain $len >actual &&
+ test_cmp expect actual
+'
+
+test_expect_success 'catch copy that overflows' '
+ printf "SVNQ%b%b%s" "QQ\003\003\001" "\0201\0177Q" X |
+ q_to_nul >copytarget.overflow &&
+ len=$(wc -c <copytarget.overflow) &&
+ test_must_fail test-svn-fe -d preimage copytarget.overflow $len
+'
+
+test_expect_success 'copyfrom source' '
+ printf foo >expect &&
+ printf "SVNQ%b%b" "Q\003\003\002Q" "\003Q" | q_to_nul >copysource.all &&
+ test-svn-fe -d preimage copysource.all 11 >actual &&
+ test_cmp expect actual
+'
+
+test_expect_success 'copy backwards' '
+ printf oof >expect &&
+ printf "SVNQ%b%b" "Q\003\003\006Q" "\001\002\001\001\001Q" |
+ q_to_nul >copysource.rev &&
+ test-svn-fe -d preimage copysource.rev 15 >actual &&
+ test_cmp expect actual
+'
+
+test_expect_success 'offsets are relative to window' '
+ printf fo >expect &&
+ printf "SVNQ%b%b%b%b" "Q\003\001\002Q" "\001Q" \
+ "\002\001\001\002Q" "\001Q" |
+ q_to_nul >copysource.two &&
+ test-svn-fe -d preimage copysource.two 18 >actual &&
+ test_cmp expect actual
+'
+
+test_expect_success 'example from notes/svndiff' '
+ printf aaaaccccdddddddd >expect &&
+ printf aaaabbbbcccc >source &&
+ printf "SVNQ%b%b%s" "Q\014\020\007\001" \
+ "\004Q\004\010\0201\0107\010" d |
+ q_to_nul >delta.example &&
+ len=$(wc -c <delta.example) &&
+ test-svn-fe -d source delta.example $len >actual &&
+ test_cmp expect actual
+'
+
+test_done