[geary/mjog/composer-context-loading-fixes: 8/19] build: Generate client internal VAPI and build client tests with it

[Michael Gratton <mjog src gnome org>]

commit 6e0aa316d8e5cf0ab60ed6c2da16435d014f26f0
Author: Michael Gratton <mike vee net>
Date:   Mon Aug 10 18:07:16 2020 +1000

    build: Generate client internal VAPI and build client tests with it

 src/client/meson.build | 52 +++++++++++++++++++++++++++++++++++++++++++++++++-
 test/meson.build       |  3 ++-
 test/test-client.vala  |  4 ----
 3 files changed, 53 insertions(+), 6 deletions(-)
---
diff --git a/src/client/meson.build b/src/client/meson.build
index 2c530049b..1c630d16f 100644
--- a/src/client/meson.build
+++ b/src/client/meson.build
@@ -170,6 +170,21 @@ client_dependencies = [
   webkit2gtk,
 ]
 
+client_build_dir = meson.current_build_dir()
+
+# Generate internal VAPI for unit testing. See Meson issue
+# https://github.com/mesonbuild/meson/issues/1781 for official
+# internal VAPI support.
+client_vala_args = geary_vala_args
+client_vala_args += [
+  '--internal-header=@0@/@1@-internal.h'.format(
+    client_build_dir, client_package_name
+  ),
+  '--internal-vapi=@0@/@1 -internal vapi'.format(
+    client_build_dir, client_package_name
+  )
+]
+
 # Enable shared shecondary process if available.
 # See issues #558 and #559
 webkit_version = webkit2gtk.version().split('.')
@@ -192,9 +207,44 @@ client_lib = shared_library(
   install_dir: client_lib_dir,
 )
 
+# Dummy target to tell Meson about the internal VAPI given the
+# workaround above, and fix the VAPI header to work around
+# GNOME/vala#358
+client_internal_header_fixup = custom_target(
+  'client_internal_header_fixup',
+  output: [
+    'geary-client-internal.h',
+    'geary-client-internal.vapi',
+  ],
+  command: [
+    find_program('sed'),
+    '-ibak',
+    's/@0@.h/geary-client-internal.h/g'.format(client_package),
+    '@OUTDIR@/geary-client-internal.vapi',
+  ],
+  depends: client_lib
+)
+
 client_dep = declare_dependency(
-  link_with: client_lib,
+  link_with: [
+    client_lib,
+    sqlite3_unicodesn_lib
+  ],
+  include_directories: include_directories('.')
+)
+
+client_internal_dep = declare_dependency(
+  # Can't just include client_lib in link_with since that will
+  # pull in the public header and we get duplicate symbol errors.
+  link_args: [
+    '-L' + client_build_dir,
+    '-l' + client_package
+  ],
+  link_with: [
+    sqlite3_unicodesn_lib,
+  ],
   include_directories: include_directories('.'),
+  sources: client_internal_header_fixup
 )
 
 subdir('plugin')
diff --git a/test/meson.build b/test/meson.build
index 86977db09..21d453fae 100644
--- a/test/meson.build
+++ b/test/meson.build
@@ -133,7 +133,7 @@ test_engine_bin = executable('test-engine',
 # Client tests
 
 test_client_dependencies = [
-  client_dep,
+  client_internal_dep,
   vala_unit_dep,
 ]
 test_client_dependencies += client_dependencies
@@ -144,6 +144,7 @@ test_client_bin = executable('test-client',
   include_directories: config_h_dir,
   vala_args: geary_vala_args,
   c_args: geary_c_args,
+  build_rpath: client_build_dir,
 )
 
 # Integration tests
diff --git a/test/test-client.vala b/test/test-client.vala
index 762887782..02e98ba5a 100644
--- a/test/test-client.vala
+++ b/test/test-client.vala
@@ -6,10 +6,6 @@
  */
 
 
-extern const string _INSTALL_PREFIX;
-extern const string _BUILD_ROOT_DIR;
-extern const string _GSETTINGS_DIR;
-
 int main(string[] args) {
     /*
      * Set env vars right up front to avoid weird bugs