diff --git a/tests/Composer/Test/Fixtures/installer/abandoned-listed.test b/tests/Composer/Test/Fixtures/installer/abandoned-listed.test
index d5e3c3d52..cdf648c0d 100644
--- a/tests/Composer/Test/Fixtures/installer/abandoned-listed.test
+++ b/tests/Composer/Test/Fixtures/installer/abandoned-listed.test
@@ -22,7 +22,7 @@ Abandoned packages are flagged
     }
 }
 --RUN--
-install
+update
 --EXPECT-OUTPUT--
 Loading composer repositories with package information
 Updating dependencies
diff --git a/tests/Composer/Test/Fixtures/installer/broken-deps-do-not-replace.test b/tests/Composer/Test/Fixtures/installer/broken-deps-do-not-replace.test
index a4bfe6a4d..3d5cba664 100644
--- a/tests/Composer/Test/Fixtures/installer/broken-deps-do-not-replace.test
+++ b/tests/Composer/Test/Fixtures/installer/broken-deps-do-not-replace.test
@@ -19,7 +19,7 @@ Broken dependencies should not lead to a replacer being installed which is not m
     }
 }
 --RUN--
-install
+update
 --EXPECT-OUTPUT--
 Loading composer repositories with package information
 Updating dependencies
diff --git a/tests/Composer/Test/Fixtures/installer/github-issues-4319.test b/tests/Composer/Test/Fixtures/installer/github-issues-4319.test
index b387942fb..2fbd8784c 100644
--- a/tests/Composer/Test/Fixtures/installer/github-issues-4319.test
+++ b/tests/Composer/Test/Fixtures/installer/github-issues-4319.test
@@ -28,7 +28,7 @@ Present a clear error message when config.platform.php version results in a conf
 }
 
 --RUN--
-install
+update
 
 --EXPECT-OUTPUT--
 Loading composer repositories with package information
diff --git a/tests/Composer/Test/Fixtures/installer/suggest-installed.test b/tests/Composer/Test/Fixtures/installer/suggest-installed.test
index 468a53612..6995f78e7 100644
--- a/tests/Composer/Test/Fixtures/installer/suggest-installed.test
+++ b/tests/Composer/Test/Fixtures/installer/suggest-installed.test
@@ -17,7 +17,7 @@ Suggestions are not displayed for installed packages
     }
 }
 --RUN--
-install
+update
 --EXPECT-OUTPUT--
 Loading composer repositories with package information
 Updating dependencies
diff --git a/tests/Composer/Test/Fixtures/installer/suggest-prod.test b/tests/Composer/Test/Fixtures/installer/suggest-prod.test
index e28ef03e5..89d6ab8de 100644
--- a/tests/Composer/Test/Fixtures/installer/suggest-prod.test
+++ b/tests/Composer/Test/Fixtures/installer/suggest-prod.test
@@ -17,6 +17,7 @@ Suggestions are not displayed in non-dev mode
 --RUN--
 install --no-dev
 --EXPECT-OUTPUT--
+<warning>No lock file found. Updating dependencies instead of installing from lock file. Use composer update over composer install if you do not have a lock file.</warning>
 Loading composer repositories with package information
 Updating dependencies
 Lock file operations: 1 install, 0 updates, 0 removals
diff --git a/tests/Composer/Test/Fixtures/installer/suggest-replaced.test b/tests/Composer/Test/Fixtures/installer/suggest-replaced.test
index 3ffcd20f7..62c13e560 100644
--- a/tests/Composer/Test/Fixtures/installer/suggest-replaced.test
+++ b/tests/Composer/Test/Fixtures/installer/suggest-replaced.test
@@ -17,7 +17,7 @@ Suggestions are not displayed for packages if they are replaced
     }
 }
 --RUN--
-install
+update
 --EXPECT-OUTPUT--
 Loading composer repositories with package information
 Updating dependencies
diff --git a/tests/Composer/Test/Fixtures/installer/suggest-uninstalled.test b/tests/Composer/Test/Fixtures/installer/suggest-uninstalled.test
index ab22eeb6e..f45b710f0 100644
--- a/tests/Composer/Test/Fixtures/installer/suggest-uninstalled.test
+++ b/tests/Composer/Test/Fixtures/installer/suggest-uninstalled.test
@@ -17,6 +17,7 @@ Suggestions are displayed
 --RUN--
 install
 --EXPECT-OUTPUT--
+<warning>No lock file found. Updating dependencies instead of installing from lock file. Use composer update over composer install if you do not have a lock file.</warning>
 Loading composer repositories with package information
 Updating dependencies
 Lock file operations: 1 install, 0 updates, 0 removals