valijson: add run_tests.sh (#13605)

Adds run_tests.sh to the valijson project.

run_tests.sh is used as part of Chronos with cached builds:
https://github.com/google/oss-fuzz/tree/master/infra/experimental/chronos#check-tests

`infra/experimental/chronos/check_tests.sh valijson c`

```
Running main() from /src/valijson/thirdparty/googletest/googletest/src/gtest_main.cc                                                                       
[==========] Running 125 tests from 16 test suites.                                                                                                        
[----------] Global test environment set-up.                                                                                                               
[----------] 21 tests from TestAdapterComparison                                                                                                           
[ RUN      ] TestAdapterComparison.JsonCppVsJsonCpp                                                                                                        
[       OK ] TestAdapterComparison.JsonCppVsJsonCpp (9 ms)                                                                                                 
[ RUN      ] TestAdapterComparison.JsonCppVsPicoJson                                                                                                       
[       OK ] TestAdapterComparison.JsonCppVsPicoJson (3 ms)                                                                                                
[ RUN      ] TestAdapterComparison.JsonCppVsRapidJson                                                                                                      
[       OK ] TestAdapterComparison.JsonCppVsRapidJson (5 ms)                                                                                               
[ RUN      ] TestAdapterComparison.JsonCppVsRapidJsonCrtAlloc                                                                                              
[       OK ] TestAdapterComparison.JsonCppVsRapidJsonCrtAlloc (5 ms)
...
```

Signed-off-by: Adam Korczynski <adam@adalogics.com>

Author: AdamKorcz

projects/valijson/Dockerfile

@@ -19,5 +19,7 @@ FROM gcr.io/oss-fuzz-base/base-builder
 RUN apt-get update && apt-get install -y make autoconf automake libtool \
   pkg-config cmake libcurlpp-dev libcurl4-openssl-dev
 RUN git clone --depth 1 https://github.com/tristanpenman/valijson
+COPY run_tests.diff run_tests.sh $SRC/
+RUN cd valijson && git apply $SRC/run_tests.diff
 WORKDIR valijson
 RUN cp $SRC/valijson/tests/fuzzing/oss-fuzz-build.sh $SRC/build.sh

projects/valijson/run_tests.diff

@@ -0,0 +1,13 @@
+diff --git a/tests/fuzzing/oss-fuzz-build.sh b/tests/fuzzing/oss-fuzz-build.sh
+index be9757c..fdf5c90 100755
+--- a/tests/fuzzing/oss-fuzz-build.sh
++++ b/tests/fuzzing/oss-fuzz-build.sh
+@@ -5,7 +5,7 @@ git submodule update --init --depth 1 thirdparty
+ mkdir build
+ cd build
+ cmake \
+-  -Dvalijson_BUILD_TESTS=FALSE \
++  -Dvalijson_BUILD_TESTS=ON \
+   -Dvalijson_BUILD_EXAMPLES=FALSE \
+   -Dvalijson_EXCLUDE_BOOST=TRUE \
+   ..

projects/valijson/run_tests.sh

@@ -0,0 +1,18 @@
+#!/bin/bash -eu
+# Copyright 2025 Google LLC.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#      http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+################################################################################
+cd $SRC/valijson/build
+./test_suite