[gegl/wip/rishi/my-patches: 3/8] tests: Test gegl:exposure in all natively supported formats

[Debarshi Ray <debarshir src gnome org>]

commit 8b4b8590c528ed61ecbbda663498f237c124fe16
Author: Debarshi Ray <debarshir gnome org>
Date:   Thu Nov 16 09:30:04 2017 +0100

    tests: Test gegl:exposure in all natively supported formats
    
    https://bugzilla.gnome.org/show_bug.cgi?id=790439

 tests/compositions/Makefile.am            |    1 +
 tests/compositions/exposure.xml           |   93 +++++++++++++++++++++++++++++
 tests/compositions/reference/exposure.png |  Bin 0 -> 729929 bytes
 3 files changed, 94 insertions(+), 0 deletions(-)
---
diff --git a/tests/compositions/Makefile.am b/tests/compositions/Makefile.am
index 9555271..c490b3f 100644
--- a/tests/compositions/Makefile.am
+++ b/tests/compositions/Makefile.am
@@ -30,6 +30,7 @@ TESTS = \
   composite-transform.xml         \
   contrast-curve.xml              \
   edge.xml                        \
+  exposure.xml                    \
   fattal02.xml                    \
   gegl.xml                        \
   gamma.xml                       \
diff --git a/tests/compositions/exposure.xml b/tests/compositions/exposure.xml
new file mode 100644
index 0000000..1191c7f
--- /dev/null
+++ b/tests/compositions/exposure.xml
@@ -0,0 +1,93 @@
+<?xml version='1.0' encoding='UTF-8'?>
+<gegl>
+  <node operation='gegl:over'>
+    <node operation='gegl:crop'>
+      <params>
+        <param name='x'>256.0</param>
+        <param name='y'>192.0</param>
+        <param name='width'>256.0</param>
+        <param name='height'>192.0</param>
+      </params>
+    </node>
+    <node operation='gegl:exposure'>
+      <params>
+        <param name='black-level'>0.03</param>
+        <param name='exposure'>-1.0</param>
+      </params>
+    </node>
+    <node operation='gegl:convert-format'>
+      <params>
+        <param name='format'>YA float</param>
+      </params>
+    </node>
+    <clone ref='clone0'/>
+  </node>
+  <node operation='gegl:over'>
+    <node operation='gegl:crop'>
+      <params>
+        <param name='x'>0.0</param>
+        <param name='y'>192.0</param>
+        <param name='width'>256.0</param>
+        <param name='height'>192.0</param>
+      </params>
+    </node>
+    <node operation='gegl:exposure'>
+      <params>
+        <param name='black-level'>0.03</param>
+        <param name='exposure'>-1.0</param>
+      </params>
+    </node>
+    <node operation='gegl:convert-format'>
+      <params>
+        <param name='format'>Y float</param>
+      </params>
+    </node>
+    <clone ref='clone0'/>
+  </node>
+  <node operation='gegl:over'>
+    <node operation='gegl:crop'>
+      <params>
+        <param name='x'>256.0</param>
+        <param name='y'>0.0</param>
+        <param name='width'>256.0</param>
+        <param name='height'>192.0</param>
+      </params>
+    </node>
+    <node operation='gegl:exposure'>
+      <params>
+        <param name='black-level'>0.03</param>
+        <param name='exposure'>-1.0</param>
+      </params>
+    </node>
+    <node operation='gegl:convert-format'>
+      <params>
+        <param name='format'>RGBA float</param>
+      </params>
+    </node>
+    <clone ref='clone0'/>
+  </node>
+  <node operation='gegl:crop'>
+    <params>
+      <param name='x'>0.0</param>
+      <param name='y'>0.0</param>
+      <param name='width'>256.0</param>
+      <param name='height'>192.0</param>
+    </params>
+  </node>
+  <node operation='gegl:exposure'>
+    <params>
+      <param name='black-level'>0.03</param>
+      <param name='exposure'>-1.0</param>
+    </params>
+  </node>
+  <node operation='gegl:convert-format'>
+    <params>
+      <param name='format'>RGB float</param>
+    </params>
+  </node>
+  <node operation='gegl:load' id='clone0'>
+      <params>
+        <param name='path'>data/car-stack.png</param>
+      </params>
+  </node>
+</gegl>
diff --git a/tests/compositions/reference/exposure.png b/tests/compositions/reference/exposure.png
new file mode 100644
index 0000000..d9dec47
Binary files /dev/null and b/tests/compositions/reference/exposure.png differ