t5601: basic bundle URI tests

This test demonstrates an end-to-end form of the bundle URI feature given by an HTTP server advertising the 'features' capability with a bundle URI that is a bundle file on that same HTTP server. We verify that we unbundled a bundle, which could only have happened if we successfully downloaded that file. RFC-TODO: Create similar tests throughout the series that perform similar tests, including examples with table of contents and partial clones. Signed-off-by: Derrick Stolee <derrickstolee@github.com>

Author: derrickstolee

t/t5601-clone.sh

@@ -790,6 +790,65 @@ test_expect_success 'reject cloning shallow repository using HTTP' '
 git clone --no-reject-shallow $HTTPD_URL/smart/repo.git repo
 '
 
+test_expect_success 'auto-discover bundle URI from HTTP clone' '
+test_when_finished rm -rf trace.txt repo2 "$HTTPD_DOCUMENT_ROOT_PATH/repo2.git" &&
+git -C src bundle create "$HTTPD_DOCUMENT_ROOT_PATH/everything.bundle" --all &&
+git clone --bare --no-local src "$HTTPD_DOCUMENT_ROOT_PATH/repo2.git" &&
+
+git -C "$HTTPD_DOCUMENT_ROOT_PATH/repo2.git" config \
+uploadpack.advertiseBundleURIs true &&
+git -C "$HTTPD_DOCUMENT_ROOT_PATH/repo2.git" config \
+bundle.version 1 &&
+git -C "$HTTPD_DOCUMENT_ROOT_PATH/repo2.git" config \
+bundle.mode all &&
+git -C "$HTTPD_DOCUMENT_ROOT_PATH/repo2.git" config \
+bundle.everything.uri "$HTTPD_URL/everything.bundle" &&
+
+GIT_TEST_BUNDLE_URI=1 \
+GIT_TRACE2_EVENT="$(pwd)/trace.txt" \
+git -c protocol.version=2 clone \
+$HTTPD_URL/smart/repo2.git repo2 &&
+cat >pattern <<-EOF &&
+"event":"child_start".*"argv":\["git-remote-https","origin","$HTTPD_URL/everything.bundle"\]
+EOF
+grep -f pattern trace.txt
+'
+
+test_expect_success 'auto-discover multiple bundles from HTTP clone' '
+test_when_finished rm -rf trace.txt repo3 "$HTTPD_DOCUMENT_ROOT_PATH/repo3.git" &&
+
+test_commit -C src new &&
+git -C src bundle create "$HTTPD_DOCUMENT_ROOT_PATH/new.bundle" HEAD~1..HEAD &&
+git clone --bare --no-local src "$HTTPD_DOCUMENT_ROOT_PATH/repo3.git" &&
+
+git -C "$HTTPD_DOCUMENT_ROOT_PATH/repo3.git" config \
+uploadpack.advertiseBundleURIs true &&
+git -C "$HTTPD_DOCUMENT_ROOT_PATH/repo3.git" config \
+bundle.version 1 &&
+git -C "$HTTPD_DOCUMENT_ROOT_PATH/repo3.git" config \
+bundle.mode all &&
+
+git -C "$HTTPD_DOCUMENT_ROOT_PATH/repo3.git" config \
+bundle.everything.uri "$HTTPD_URL/everything.bundle" &&
+git -C "$HTTPD_DOCUMENT_ROOT_PATH/repo3.git" config \
+bundle.new.uri "$HTTPD_URL/new.bundle" &&
+
+GIT_TEST_BUNDLE_URI=1 \
+GIT_TRACE2_EVENT="$(pwd)/trace.txt" \
+git -c protocol.version=2 clone \
+$HTTPD_URL/smart/repo3.git repo3 &&
+
+# We should fetch _both_ bundles
+cat >pattern <<-EOF &&
+"event":"child_start".*"argv":\["git-remote-https","origin","$HTTPD_URL/everything.bundle"\]
+EOF
+grep -f pattern trace.txt &&
+cat >pattern <<-EOF &&
+"event":"child_start".*"argv":\["git-remote-https","origin","$HTTPD_URL/new.bundle"\]
+EOF
+grep -f pattern trace.txt
+'
+
 # DO NOT add non-httpd-specific tests here, because the last part of this
 # test script is only executed when httpd is available and enabled.