test: sandbox: add test for erase command

Add test for the erase command tested on ENV in EXT4.
Signed-off-by: NPatrick Delaunay <patrick.delaunay@st.com>

configs/sandbox64_defconfig

@@ -27,6 +27,7 @@ CONFIG_CMD_BOOTEFI_HELLO=y
 # CONFIG_CMD_ELF is not set
 CONFIG_CMD_ASKENV=y
 CONFIG_CMD_GREPENV=y
+CONFIG_CMD_ERASEENV=y
 CONFIG_CMD_ENV_CALLBACK=y
 CONFIG_CMD_ENV_FLAGS=y
 CONFIG_CMD_NVEDIT_EFI=y

configs/sandbox_defconfig

@@ -32,6 +32,7 @@ CONFIG_CMD_ABOOTIMG=y
 # CONFIG_CMD_ELF is not set
 CONFIG_CMD_ASKENV=y
 CONFIG_CMD_GREPENV=y
+CONFIG_CMD_ERASEENV=y
 CONFIG_CMD_ENV_CALLBACK=y
 CONFIG_CMD_ENV_FLAGS=y
 CONFIG_CMD_NVEDIT_EFI=y

configs/sandbox_flattree_defconfig

@@ -24,6 +24,7 @@ CONFIG_CMD_BOOTEFI_HELLO=y
 # CONFIG_CMD_ELF is not set
 CONFIG_CMD_ASKENV=y
 CONFIG_CMD_GREPENV=y
+CONFIG_CMD_ERASEENV=y
 CONFIG_CMD_NVEDIT_INFO=y
 CONFIG_CMD_NVEDIT_LOAD=y
 CONFIG_CMD_NVEDIT_SELECT=y

configs/sandbox_spl_defconfig

@@ -34,6 +34,7 @@ CONFIG_CMD_BOOTEFI_HELLO=y
 # CONFIG_CMD_ELF is not set
 CONFIG_CMD_ASKENV=y
 CONFIG_CMD_GREPENV=y
+CONFIG_CMD_ERASEENV=y
 CONFIG_CMD_ENV_CALLBACK=y
 CONFIG_CMD_ENV_FLAGS=y
 CONFIG_CMD_NVEDIT_INFO=y

test/py/tests/test_env.py

@@ -475,6 +475,22 @@ def test_env_ext4(state_test_env):
         response = c.run_command('echo $?')
         assert response == "0"
 
+        response = c.run_command('env erase')
+        assert 'OK' in response
+
+        response = c.run_command('env load')
+        assert 'Loading Environment from EXT4... ' in response
+        assert 'bad CRC, using default environment' in response
+
+        response = c.run_command('env info')
+        assert 'env_valid = invalid' in response
+        assert 'env_ready = true' in response
+        assert 'env_use_default = true' in response
+
+        response = c.run_command('env info -p -d')
+        assert 'Default environment is used' in response
+        assert 'Environment can be persisted' in response
+
         # restore env location: NOWHERE (prio 0 in sandbox)
         response = c.run_command('env select nowhere')
         assert 'Select Environment on nowhere: OK' in response